Heating plant system, heating plant system local unit, control unit for local unit and method of operation of heating plant system

FIELD: heating plants.

SUBSTANCE: heating plant system has central unit 1 for producing heat and providing hot primary fluid, set of local units 5 any of which has heat exchange device 13, 14 and circuit of pipelines 2, 2' drawn inside circulation system from unit 1. Any local unit intends for getting hot primary fluid through unit 13, 14 of heat exchanger. First and second local units 5 have corresponding control 27. Control unit has first aid 17, 21, 27, 29-32, 33-40, 62 and 63 for providing at least one parameter relating to need of corresponding local unit 5 in hot primary fluid. Second aid 16 performs operation of corresponding local unit 5. Second aid has at least member 25, 26 for acting on flow by hot primary fluid through local unit 5. Local unit 5 has first secondary circulation system intended for heating. Heat exchanger unit has second heat exchanger 14 for second secondary circulation system 12 for producing hot water. Control unit 27 has communication device 50 providing info transmission on mentioned parameter 17, 21, 27, 29-32, 33-40, 62, 63 from at least second local unit to first local unit 5. Control unit 27 of first local unit 5 intends for controlling operation of local unit 5 correspondingly to parameter relating to second local unit 5. There are also descriptions of local unit of heating plant system, control unit for local unit of heating plant system and method of operation of heating plant system.

EFFECT: improved efficiency of control of heating plant system.

38 cl, 3 dwg

 

PRIOR art

The present invention relates to a system of distribution that contains the Central unit heat to provide hot primary fluid of the fluid, a number of local blocks, each of which contains a device of the heat exchanger, and a network of pipelines, stretched into the circulation system of the above-mentioned block heat production, each local unit is connected with said circulation system and is designed to get hot primary fluid (fluid) through the unit heat exchanger, and at least first and second local blocks contain the appropriate control block that contains the first means for providing at least one parameter relating to the needs of the local block in the hot primary fluid (fluid), and second means for controlling the operation of the corresponding local block.

The invention also relates to the local unit of a heating plant, to the control unit to the local unit of the district heating system and to a method of functioning of the system of distribution.

The control of such systems district heating is usually carried out via the Central unit of heat generation by the temperature of the outgoing hot primary fluid and the temperature ol the return, that is, the temperature of the primary fluid when it is returning to block the production of heat. Additionally, the Central unit controls the system by means of differential pressure, i.e. the pressure coming out of the primary fluid relative to the pressure of the incoming primary fluid. In addition, each local block, in essence, controls the secondary circulation system, and an unlimited supply of primary fluid as would be provided constantly. This type of control system heating plant is not always optimal and does not allow scheduling of load time, that is, in the system there are significant changes in effective demand. To counter the resulting frequent peaks needs, having a small length, the unit of heat production must function significantly adjusting the load that expensive because the unit of heat is not enough control over the effective demand of the local blocks. Based on the prospects of development of the local block, you can get lower costs for heat, if a local unit of ability to adjust its effective demand so that the total demand of the system was possible at a constant level.

Local units can functioning of the VAT in many different ways, but, basically, they are designed to provide heat for heating either directly by the primary fluid, a member of the local unit, or through the secondary circulation system of the local block. The local block, basically, is also designed to provide hot water via a heat exchanger, through the primary side of which flows the hot primary fluid from the Central unit.

The local unit for the district heating system is described in SE-B-334725. Local block contains multiple radiators, which are designed to get hot primary fluid from the power production of heat, and the heat exchanger to produce hot tap water. Additionally, the local block contains the preferred connection to enable local bypass the radiator of the unit to withstand peaks of load tap water.

In SE-B-367053 described another local unit with the first heat exchanger for heating and a second heat exchanger to produce hot tap water. The paper also describes the preferred connection is to provide local bypassing the radiator of the unit to withstand peaks of load tap water.

The above-described problems identified in the publication Sven Werner, called DYNAMISA VARMEIASTER FRAN FIKTIVA VARMEBEHOV, FOU 1997:10, Fjarrvarmeforeningen. This publication identifies potential solution to these problems by providing two-way communication between the Central unit and heat production each local unit. This will provide a new level of control when functioning in different situations. It will also provide the Central unit heat production the ability to control the flow of the primary fluid to the various local units depending on the flow through these blocks.

The INVENTION

The present invention is to overcome the above described problems and provide a more sophisticated control system heating plant.

This is achieved through a system of distribution that is defined at the beginning, which differs in that it contains a control unit containing a communications device that enables the transmission of information about these settings, at least from the second local unit first local block, and the control unit of the first local unit is designed to control the operation of this unit, in accordance with the parameter related to the second local block.

As a result, it is possible to reconcile the efficient use of the local unit effective consumption of other local unit is in the district heating system. Even if a very large number of local blocks of the district heating system only two local unit provided such communication capabilities, it is best. System of distribution often contain subnet included as part of a network of pipelines and a closed circulation system. The invention is particularly advantageous in the case of two particular adjacent local units, i.e. two blocks, which are located in a specific public subnet district heating system. It should be noted that there is no need to mentioned parameter was the same parameter in different local blocks of the district heating system. This means that the local unit, for example, can be controlled in accordance with different parameters, different local units.

According to a variant embodiment of the invention the second means includes at least an element of influence on the stream to impact the flow of hot primary fluid through a local block. It also impacts on the stream can mainly be designed to reduce the flow of hot primary fluid through the first local block, if the parameter for the second local block defines the high demand of the second block in the hot primary fluid. Consequently, the alignment is complete now what about the consumption of district heating system. Also can be lowered to the required peak demand, and consequently the possibility of connecting more local units to the existing system of distribution, without the need to increase the performance of the Central unit of heat production. Additionally, the full pressure difference of the district heating system can be maintained essentially constant.

According to an additional variant embodiment of the invention the device of the heat exchanger includes a first heat exchanger to the first secondary circulation system to heat and the second heat exchanger to the second secondary circulation system for hot water production, while the second means includes a first element impacts on the stream, such as a control valve for influencing the flow of hot primary fluid through the first heat exchanger, and the second element impacts on the stream, such as a control valve for influencing the flow of hot primary fluid through the second heat exchanger. Mainly, at least, the first element of the impact on the flow of the first local block, moreover, can be designed to reduce the flow of hot primary fluid through the first heat exchanger for heating, if the parameter for the second local block determines the higher the percent the need for the second block in the hot primary fluid. Also, if during the period of time decreases the flow of energy to the secondary circulation system for heating, it is unlikely to be perceived as an adverse condition, because the design of the heated building has the ability to retain heat and, therefore, within such period of time, the temperature will not significantly decrease.

According to an additional variant of the invention, the mentioned parameter refers to the value of the stream of hot primary fluid through the unit heat exchanger. In this case, the first tool may contain the elements required for a valve position of the control valve, which is a measure of the flow of hot primary fluid, these parameter corresponds to the position of the valve. Can also be provided with a flow meter for direct measurement of the flow of hot primary fluid through the device of the heat exchanger of the local block. Another possibility to determine the mass flow rate is to measure the differential pressure through the unit heat exchanger of the local block.

According to an additional variant of the invention, the first means includes a sensor for measuring the temperature, and the above-mentioned parameter refers to the measured temperature. For example, several neighboring local units may use the th only one temperature sensor for measuring temperature of the outdoor air and transfer between the local blocks of information about the measured outdoor ambient temperature. It also provides the ability to transmit information about other temperatures, which belong to room temperature, the local units, the temperature of the incoming and outgoing primary liquid local blocks, etc.

According to an additional variant of the invention, the first means includes a pressure sensor for measuring the pressure difference between the primary fluid, a member of the local unit, and the primary fluid coming out of the local block, these parameter refers to the pressure difference. The second tool, in addition, for the circulation of hot primary fluid may contain an element of influence on the flow in the form of a pump. Therefore, the control unit of the first local block can be designed to impact on the control of the pump in accordance with said parameter of the second local block so that for these two local blocks management provided the desired value of the flow of primary liquid through the pump. Therefore, the invention creates the possibility for simple optimization of the full differential pressure system boiler houses. Consequently economical operation of the pumps in the district heating system.

According to an additional variant of the invention, the Central unit also includes at trojstvo communication designed to provide two-way communication, at least one of the above first and second local blocks. Consequently, at least one of the two mentioned local blocks may be intended for transmission to the Central unit of the above-mentioned parameter, at least one local unit. The local unit may take from neighboring local units information about the position of the valve, or any other parameter, and transmit to the Central unit information about the position of the valve or other parameters of these neighboring local units in processed or unprocessed form. This two-way communication to the Central unit, for example, also creates opportunities for Central management and control valves for primary fluid or pump for the primary fluid in the subnet.

According to an additional variant of the invention, the above-mentioned communication devices include a means for communication via radio signals. Communication devices, essentially, can contain a means for communication via a mobile telephone network. Preferably, the communication devices include a means for communication over a computer network such as the Internet. Additionally, the above-mentioned communication devices mainly can include a means for communication through the electric the Yu network.

The objective of the invention is the provision of a local unit defined at the beginning, which is characterized in that the control unit includes a communication device designed for two-way transfer of information from a communication device of another local unit, and the control unit is designed to control the operation of the local unit in accordance with a parameter related to the needs of another local unit in the hot primary fluid.

Preferential embodiments of a local unit is defined in dependent clauses of the claims 21 to 37.

Additionally, the present invention is the provision of a control unit defined in the beginning, which differs in that it contains a communication device designed to provide two-way transmission of information from a communication device of another local unit, and the control unit is designed to control the operation of the local unit in accordance with a parameter related to the needs of another local unit in the hot primary fluid.

The present invention is the provision of a method defined in the beginning, which is characterized by the transmission of information about the mentioned parameter between the first and second local blocks and control the operation of the first local block in accordance with said parameter, related to the second local block.

BRIEF DESCRIPTION of DRAWINGS

The present invention is explained in more detail below by describing various embodiments according to the attached drawings.

Fig. 1 schematically depicts a system of distribution according to the invention.

Fig. 2 depicts in more detail the local unit according to the first variant of implementation of the district heating system depicted in Fig. 1.

Fig. 3 depicts in more detail the local unit according to the second variant of implementation of the district heating system depicted in Fig. 1.

DETAILED DESCRIPTION of VARIOUS embodiments of the INVENTION

According Fig. 1 describes a system of distribution, which contains the Central unit 1 heat to provide hot primary fluid. The Central unit 1 can contain a heating system or an integrated installation of the energy source and heating system, which produces energy by, for example, combustion of liquid fuels. However, the Central unit can be any unit, providing a hot environment, such as waste heat from any industrial process.

The system of district heating also contains described schematically network 2 pipelines in the form of a closed circulation system via the Central unit 1. Network 2 the line is horseflies essentially known manner may contain different subnet 2', all of which are contained in a closed circulation system. For example, network 2, 2' pipelines may contain two parallel pipelines, one for submission to different local units 5 hot primary fluid and one for the returning flow of primary liquid from the local units 5 to the Central unit 1. The district heating system can also contain subordinate network (not shown), being closed, which through the heat exchanger connected to the network 2 pipelines or subnet 2'. As a result, the liquid in this sub-network is separated from the primary fluid. According to the invention by a district heating system may also be such subordinated to the network in which the Central unit of heat is the above-mentioned heat exchanger. According Fig. 1 district heating system also includes at least one pump 3 to circulate the hot primary fluid through the network 2, 2' pipelines. Different subnet 2' may also contain a separate circulation pumps 3' for circulation in the corresponding subnet 2'.

To the network 2, 2' of piping systems district heating connected several local units 5. Local units 5 can be connected to the network 2 pipelines highest hierarchy or to any subnet 2'. Additionally, the Central unit 1 contains a standard management tool for controlling the various components of the system, for example, the pumps 3, 3'.

According Fig. 2 are described in more detail an implementation option of the local unit 5. It should be noted that in the framework of the present invention, the local units 5 can be designed in many different ways. Local unit 5 includes the first secondary system 11 circulation for heating and the second secondary system 12 circulation to create hot water. The first secondary circulation system 11 connected to the network 2, 2' of the pipes through the first heat exchanger 13. The second secondary system 12 circulation connected to the network 2, 2' of the pipes through the second heat exchanger 14. Therefore, in the described embodiment, the device of the heat exchanger of the local block 5 has two heat exchanger 13, 14. However, it should be noted that the device of the heat exchanger may contain more or fewer heat exchangers. For example, in the first secondary circulation system 11 for heating the hot primary fluid from the network 2, 2' of the pipes may be supplied directly into the radiator 15. The first secondary circulation system 11 and/ or the second secondary system 12 circulation can provide two heat exchanger, connected one after the other, to provide pre-heating and final heating of the secondary fluid in the corresponding secondary system 11, 12 is circulatie. The first secondary circulation system 11 in addition to the above-mentioned heat sinks 15 also includes a circulation pump 16 and the temperature sensor 17. The second secondary system 12 circulation contains a number of outlet openings 18, that is, different forms of point-of-way for hot water. To supply tap water also has the intake manifold 19. In the described embodiment, the second secondary system 12 circulation also includes a circulation pump 20 and sensor 21, the temperature for measuring the temperature coming out of the secondary fluid. It should be noted that the secondary system 12 circulation must not be closed, that is, through any pump 20 is not recirculated tap water.

On the primary side of the local unit 5 also includes a means for control of operation of the local unit 5. This tool contains two control valves 25 and 26. The control valve 25 is designed to provide the control value of the stream of hot primary fluid supplied to the first heat exchanger 13. This can be accomplished by adjusting the valve position of the control valve 25. Thus, it is possible to manage the demand provided to the first secondary circulation system 11. Accordingly, the second control valve 26 is designed to control the compliance value of the stream of primary fluid, supplied to the second heat exchanger 14, by adjusting the valve position. Control valves 25, 26 and the pumps 16, 20 are connected with the element 27 of the control. In the described embodiment, there are also sensitive elements 29 and 30 to determine the position of the valves the control valves 25 and 26 respectively. Otherwise, the valve position of the control valves 25, 26 can be defined directly in the element 27 of the control, as a function of the control signal supplied to the control valves 25, 26.

Additionally, the local unit 5 may include sensors 31, 32 pressure for measuring the pressure of the primary fluid, a member of the local unit 5, and the primary fluid exiting the local unit 5, respectively. The sensors 31 and 32 of the pressure, respectively, are also connected to the element 27 of the control.

The sensors 17 and 21 of the temperature is also connected to the element 27 of the control. Additionally, the local unit may contain several additional temperature sensors, which are all connected to the element 27 of the control. The sensor 33, the temperature is designed to measure the outdoor temperature. The sensor 34 temperature is designed to measure the temperature of the primary fluid exiting the local unit 5, and two sensors 35 and 36 temperature are used to measure the temperature of the primary fluid exiting the second from the first heat exchanger 13 and the second heat exchanger 14, respectively. Two sensors 37 and 38 temperature are used to measure the temperature of the primary fluid in the inlet hole of the first heat exchanger 13 and the inlet hole of the second heat exchanger 14, respectively. Two sensors 39 and 40 temperature are also designed to measure the temperature of the secondary fluid immediately prior to the first heat exchanger 13 and the second heat exchanger 14, respectively.

According to the present invention, at least some of the local units 5 contain the device 50 of communication, providing two-way communication between the local blocks of 5. Device 50 connection connected to the element 27 of the control. The Central unit 1 can also contain such a device 50 which is connected to means 6 controls described schematically. Additionally, through such communication device 50, for example, can be controlled by a pump 3' for the circulation of the primary fluid in subnet 2'.

The local communication device 5 blocks are designed to convey information about the value of one or more parameters provided by the sensors 17, 21, 33-40 temperature sensitive elements 29, 30 and sensors 31, 32 pressure. As a consequence, the elements 27 control of the various local units 5 can be taken into account in their control algorithms not only the data parameters from the corresponding local block is 5, but also from one or more other local units 5.

It should be noted that these parameters can be part of other parameters, for example, are calculated by means of the controls. Then the calculated parameters, which include the above-mentioned parameters can be transferred between different devices 50 connected. Such calculations, for example the logarithmic mean temperature difference, it is possible to perform the control of the host local unit 5 or the Central unit 1.

However, the elements 27 control can also be designed to control the respective local unit 5 in a standard way, are not all these parameters are related to the corresponding block, in addition to the outdoor temperature and the temperature of the secondary fluid. Additionally, according to the invention must be taken into account these parameters, related to other local units 5.

Device 50 due may operate according to known principles of communication, such as device 50 communication may include means for transmitting signals via radio signals. Device 50 can also be designed to communicate via a mobile telephone network. In this case, each local unit 5 can contain a kind of portable phone. Device 50 also can sod is neigh means of communication through a computer network, for example, the Internet, or, for example, any public or private Internet. In addition, the device 50 due may contain a means for communication over the electricity network. The communication may be performed via one or more of the above methods of communication.

According Fig. 3 describes a second variant implementation of the local unit 5. The second variant of implementation differs from the first variant of realization of the fact that the second secondary system 12 circulation contains a collection of 55 for hot tap water. Hot tap water is supplied from the secondary side of the second heat exchanger 14 through the first inlet opening 56 located at a relatively high level. Cold tap water flows from the collector 55 through the first discharge hole 57 located at a relatively low level, and recycle to the second heat exchanger 14 through the pump 20. Tap water to the outlets 18 of the tap water is taken from the second outlet openings 58 located at a relatively high level, where the tap water in the collection supports a relatively high temperature. Unused tap water may, for example, recycling collection 55 by means of pump 59 and through the second inlet opening 60 located at a relatively low level. Cool plumbing is odna water can be fed to the collector 55 through the inlet pipe 19 and the inlet opening 61. In the collection of 55 provided with the first sensor 62 temperature for measuring relatively hot tap water and the second sensor 63 temperature for measuring relatively cold tap water. The sensors 62, 63 temperature is connected with the element 27 of the control.

If the local unit 5, for example, has a greater need for hot water, it will increase the flow through the control valve 26. Such a need may be detected, for example, by determining the valve position of the control valve 26. The local unit 5 transmits the information about the parameter that defines the position of the valve, the control valve 26, to one or more other local units 5. Then any of these other local units 5 within a shorter or longer period of time may trigger a decrease in the flow of primary fluid through the first heat exchanger 13 by means of the throttling control valve 25. As a consequence, will not increase the total effective output network 2, 2' pipelines, and loading of the Central unit 1 can remain unchanged. Additionally, the full pressure difference in network 2, 2' of the pipes can be maintained essentially constant.

The invention also creates opportunities for transmission of other parameters measured by the sensors 17, 21, 62, 63 temperature, and the sensor is AMI 31, 32 pressure. Measurement of pressure difference for each local unit 5 can be used mainly to maintain essentially constant level full pressure difference network 2, 2' pipelines. The pressure difference in subnet 2' can also be maintained essentially at a constant level through the local pump 3'. In this regard, the element 27 of the control of any of the local units 5 connected to subnet 2', can be designed to impact on the control of the pump 3' in accordance with the measured pressure difference between local units 5 connected to subnet 2', or with the provisions of the control valves 25 and 26 local units 5. If the valve position of the local unit 5 determines that the control valves 25, 26 is very open, the pressure created by the pump may be too low, increase the capacity of the pump. If the valve position of the local unit 5 determines that the control valves 25, 26 are opened too small, the pressure created by the pump may be too high, i.e. the performance of the pump is too high and should be reduced.

Information about the different parameters can also be uploaded to the Central unit 1, with the device 50 connected. If, for example, the main unit 1 has information about the position of the valve, one or more of the space of a few local units 5, he can better control the water temperature in the district heating and pressure pump 3, and may also pump 3' for the primary fluid in subnet 2'. It can also provide the Central unit 1 is able to directly control the valve position of any or some of the local units 5, for example, through device 50 connected. Among the information because of this, the Central unit 1 can receive through the device 50 communication, there is also information for making predictions about future needs for heat based on statistical values of various parameters, such as valve at different points in time, and in relation to outside temperature.

Additionally, according to the present invention a collection of 55 can be filled with other local units 5. For example, local units 5 can transmit information about their needs filling through the parameters related to the temperature measured by the sensors 62 and 63 temperature. Thus, it may be provided with a filling that minimizes the total load of the different blocks 5. Filling local unit 5 can occur, for example, sequentially, after another block, or over a relatively long period of time may be filling out multiple local units 5. The filling also what can happen when the instantaneous overall demand for water is at its lowest level.

The invention is not limited to the described variants of implementation, but may be changed and modified within the subsequent claims. It should be noted that according to the present invention, at least two of the local units 5 contain the device 50 connected. However it is advantageous if several local units 5, and preferably essentially all local units have such devices 50 connected. Thus, the system of distribution may be perfected in series with the increase in the number of local units with devices 50 connected.

1. System of a heating plant, containing the Central unit (1) heat to provide hot primary fluid, a number of local blocks (5), each of which contains a device (13, 14) of the heat exchanger, and the network (2, 2') of pipelines, stretched into the circulation system from the block (1) heat production, each local unit (5) connected to the circulation system and is designed to get hot primary fluid through the device (13, 14) of the heat exchanger, and at least first and second local blocks (5) contain the corresponding block (27) of the control that contains the first means (17, 21, 27, 29-32, 33-40, 62, 63) to provide at least one parameter is RA, related to the needs of the respective local unit (5) in the hot primary fluid, and a second means (16, 20, 25, 26) for controlling the operation of an appropriate local unit (5), while the second product contains at least an element (25, 26) impacts on stream to impact the flow of hot primary fluid through a local unit (5), the local unit (5) comprises a first secondary circulation system for heating, and the heat exchanger includes a second heat exchanger (14) to the second secondary system (12) circulation for the production of hot water, characterized in that the block (27) contains a control device (50) communications for the transmission of information about the mentioned parameter (17, 21, 27, 29-32, 33-40, 62, 63), at least from the second local unit first local block (5), the block (27) of the first local management unit (5) is designed to control the operation of the local unit (5) according to a parameter related to the second local block (5).

2. The system according to claim 1, characterized in that the element (25, 26) impacts on stream is designed to reduce the flow of hot primary fluid through the first local unit (5), if the parameter for the second local block (5) defines the high demand of the second unit (5) in the hot primary fluid.

3. System according to any one of claim 1 or 2, characterized in that the element effects on the fluid comprises a control valve (25, 26).

4. System according to any one of the preceding paragraphs, characterized in that the device is a heat exchanger includes a first heat exchanger (13) for the first secondary system (11) of the circulation, these second means includes a first element (25) impacts on stream to impact the flow of hot primary fluid through the first heat exchanger (13) and the second element (26) impacts on stream to impact the flow of hot primary fluid through the second heat exchanger (14).

5. The system according to claim 4, characterized in that at least the first element (25) impact on the flow of the first local unit (5) designed to reduce the flow of hot primary fluid through the first heat exchanger (13), if mentioned for the second parameter is the local unit (5) defines the high demand of this second unit (5) in the hot primary fluid.

6. System according to any one of the preceding paragraphs, characterized in that the parameter refers to the value of the stream of hot primary fluid through the device (13, 14) of the heat exchanger.

7. System according to any one of claim 3 or 6, characterized in that the said first means includes an element (27, 29, 30) to provide a valve position control of the Commissioner of the valve (25, 26), which is a measure of the flow of primary fluid, these parameter refers to the position of the valve.

8. System according to any one of the preceding paragraphs, characterized in that the first means includes a sensor (17, 21, 33-40, 62, 63) for temperature measurement, these parameter refers to the measured temperature.

9. System according to any one of the preceding paragraphs, characterized in that the first means includes sensors (31, 32) of the pressure for measuring the pressure difference between the primary fluid, a member of the local unit (5), and the primary fluid coming out of the local unit (5), these parameter refers to this pressure difference.

10. System according to any one of the preceding paragraphs, characterized in that the second means includes an element (3') impacts on stream in the form of a pump for circulating the hot primary fluid.

11. The system of claim 10, characterized in that the block (27) of the first local management unit (5) designed to impact on the control of the pump (3') in accordance with said parameter of the second local block so that the flow of primary fluid through the pump (3') for these two local blocks (5) was given by management to the desired value.

12. System according to any one of the preceding paragraphs,characterized in that the Central unit (1) contains a device (50) communication that is designed to provide two-way communication, at least one of the above first and second local block (5).

13. System according to any one of claim 6 or 12, characterized in that at least one of the above-mentioned first and second local block (5) is intended for transmission to the Central unit (1) information about the mentioned parameter, at least one local unit (5).

14. System according to any one of the preceding paragraphs, characterized in that the device (50) links contain the means to communicate via radio signals.

15. System 14, characterized in that the device (50) links contain a means for communication over the mobile phone network.

16. System according to any one of the preceding paragraphs, characterized in that the device (50) links contain a means for communication over a computer network.

17. System according to any one of the preceding paragraphs, characterized in that the device (50) links contain a means for communication over the Internet.

18. System according to any one of the preceding paragraphs, characterized in that the device (50) links contain a means for communication over the electricity network.

19. The local unit of a heating plant, which contains a device (13, 14) of the heat exchanger, designed for gaining the hot primary fluid through the network (2, 2') of piping systems district heating, and the control unit that contains the first means (17, 21, 27, 29-32, 33-40, 62, 63) to provide at least one parameter related to the needs of the local unit (5) in the hot primary fluid, and a second means (16, 20, 25, 26) for controlling the operation of the local unit (5), while the second product contains at least an element (25, 26) impacts on stream to impact the flow of hot primary fluid through the local unit (5), and the local unit (5) comprises a first secondary circulation system for heating, and the heat exchanger includes a second heat exchanger (14) to the second secondary system (12) circulation for hot water production, characterized in that the control unit contains a device (50) communication that is designed to provide two-way information transmission device (50) links to another local unit (5), while the control unit is designed to control the operation of the local unit in accordance with a parameter related to the needs of another local unit (5) in hot primary fluid.

20. The local block in claim 19, characterized in that the element (25, 26) impacts on stream is designed to reduce the flow of hot primary fluid through a local unit (5), if the parameter DL is the second local block (5) defines the high demand of this second block in the hot primary fluid.

21. Local unit according to any one of claim 19 or 20, characterized in that the element impacts on stream comprises a control valve (25, 26),

22. Local unit according to any one of p-21, characterized in that the device is a heat exchanger includes a first heat exchanger (13) for the first secondary system (11) circulation for heating and a second heat exchanger (14) to the second secondary system (12) circulation for hot water production, while the second means includes a first element (25) impacts on stream to impact the flow of hot primary fluid through the first heat exchanger (13) and the second element (26) impacts on stream to impact the flow of hot primary fluid through the second heat exchanger (14).

23. Local block of item 22, wherein at least the first element (25) effect on the flow is designed to reduce the flow of hot primary fluid through the first heat exchanger (13), if mentioned for the second parameter is the local unit (5) defines the high demand of this second block in the hot primary fluid.

24. Local unit according to any one of p-23, characterized in that the said parameter of the second local block (5) refers to the magnitude of the stream of hot primary fluid through the unit heat exchanger.

25. Local unit according to any one of item 21 or 24, otlichalis the same time, the first tool contains an element (27, 29, 30) to provide a valve position of the control valve (25, 26), which is the measure mentioned flow of the primary fluid.

26. Local unit A.25, characterized in that the said parameter of the second local block (5) applies to such position of the valve.

27. Local unit according to any one of p-26, characterized in that the first means includes a sensor (17, 21, 33-40, 62, 63) for temperature measurement.

28. The local block in item 27, wherein the said parameter of the second local block (5) refers to a measured temperature.

29. Local unit according to any one of p-26, characterized in that the first means includes sensors (31, 32) of the pressure for measuring the pressure difference between the primary fluid, a member of the local unit (5), and the primary fluid coming out of the local unit (5).

30. Local block of clause 29, wherein the said parameter of the second local block (5) applies to such differential pressure.

31. Local unit according to any one of p-30, characterized in that the device (50) communication provides a means to communicate via radio signals.

32. Local unit p, characterized in that the device (50) connection provides a means for communication over the mobile phone network.

33. Local unit according to any one who from p-32, characterized in that the device (50) connection provides a means for communication over a computer network.

34. Local unit according to any one of p-33, characterized in that the device (50) connection provides a means for communication over the Internet.

35. Local unit according to any one of p-34, characterized in that the device (50) connection provides a means for communication over the electricity network.

36. The control unit for the local unit of the district heating system, in which the local unit (5) comprises a device (13, 14) of the heat exchanger and is designed to get hot primary fluid through the unit heat exchanger, and the control unit includes first means (17, 21, 27, 29-32, 33-40, 62, 63) to provide at least the parameter relating to the needs of the local unit (5) in the hot primary fluid, and a second means (16, 20, 25, 26) for controlling the operation of the local unit (5), and the second product contains at least an element (25, 26) impacts on stream to impact the flow of hot primary fluid through a local unit (5), the local unit (5) comprises a first secondary circulation system for heating, and the heat exchanger includes a second heat exchanger (14) to the second secondary system (12) circulation for hot water production, characterized in that it contains the device is in (50) communication designed to provide two-way information transmission device (50) links to another local unit (5), while the control unit is designed to control the operation of the local unit in accordance with a parameter related to the needs of another local unit (5) in the hot primary fluid.

37. The method of functioning of the system of distribution that contains the Central unit heat to provide hot primary fluid, at least first and second local blocks, each of which contains a device of the heat exchanger, and a network of pipelines stretching into the circulation system from the power production of heat, each local unit is connected to the circulation system, and at least first and second of these local units contain the appropriate control block that contains the first means for providing at least one parameter and the second tool that contains at least the element (25, 26) impacts on stream to impact the flow of hot primary fluid through a local unit (5), the local unit (5) comprises a first secondary circulation system for heating, and the heat exchanger includes a second heat exchanger (14) to the second secondary system (12) circulation for hot water production, and if this is the method includes the steps of hot primary fluid in the device of the heat exchanger of each local unit and software at least the above-mentioned parameter related to the needs of each local unit in the hot primary fluid, wherein the transfer information about the mentioned parameter between the first and second local units and manages operation of the first local block use impacts on stream in accordance with said parameter related to the second local block.



 

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