Operating method of heat exchanger and hvac plant for method implementation

FIELD: heating system.

SUBSTANCE: invention subject is the operating method of the heat exchanger (15), through which the coolant flows on the primary side, which enters into the heat exchanger (15) with the first temperature (T1, TWein) and exits from it with the second temperature (T2, TWaus), on the secondary side, in case of the heating it gives the heat flow to the secondary medium, passing through the heat exchanger (15) , and in the case of the cooling selects the heat flow from the secondary medium, which enters the heat exchanger (15) with the third temperature (T3, TLein) and again comes out of it with the fourth temperature (T4, TLaus). The heat exchanger (15) can transmit the maximum heat flow . At least three of four temperatures (TWein, TWaus, TLein, TLaus) and that the corresponding degree of heat exchanger (15) saturation is determined according to these measured temperatures, which is used to control its operation.

EFFECT: simplified control.

19 cl, 8 dwg

 



 

Same patents:

FIELD: heating.

SUBSTANCE: cooling device of a heat exchange type for a transformer includes the following: an insulation oil circulating pipe made in the form of a closed circuit so that insulation oil added to the transformer is taken to the outside and then it returns again to the transformer; an insulation oil pump designed for transfer of insulation oil; and an insulation oil cooling system designed for cooling of insulation oil; the insulation oil cooling system includes the following: a liquid cooling agent maintained in a liquid state throughout the circulation cycle; a cooling agent circulating pipe designed for the liquid cooling agent circulation; a cooling agent pump designed for transfer of the liquid cooling agent; and a heat exchange part made so that heat exchange is provided between the liquid cooling agent and insulation oil for insulation oil cooling.

EFFECT: reducing weight and dimensions of the device.

12 cl, 7 dwg

FIELD: heating.

SUBSTANCE: heat exchanger plates are arranged one after another in a plate heat exchanger, forming several gaps between plates for the first medium and several gaps between plates for the second medium. A heat exchanger plate comprises a heat transfer zone (10), an edge zone (11), which continues around and outside the heat transfer zone (10), and a device (25), designed to receive or transfer a signal. The heat exchanger plate also comprises a communication module (20), comprising an electronic circuit (21), connected to the specified device and a communication facility, making it possible to exchange the specified signal with a control device (30) by means of at least of the communication module (20) of another heat exchanger plate, contained in the packet of plates.

EFFECT: simplified assembly, increased reliability of heat exchanger operation.

16 cl, 6 dwg

FIELD: heating.

SUBSTANCE: heat exchanging plate for plate heat exchanger contains a heat transfer zone (10) and edge zone (11), extended around the heat transfer zone. The heat exchange plate is a plate with a double wall formed by two adjacent plates, compressed to be contacted with each other. The heat exchange plate contains the sensor (20), which is designed with a possibility of determination, at least, one parameter and output of the parameter-dependent signal, and the sensor has a sensor probe (21), designed to be located between adjacent plates.

EFFECT: improvement of leak detection in plate heat exchangers with the plates with double walls.

18 cl, 9 dwg

FIELD: machine building.

SUBSTANCE: automatic keeping of a heat carrier temperature inside a tube within the specified range is performed. A liquid-and-gas tube-and-shell heat exchanger with an automatic control system for the heat exchange process control comprises a casing from two concentrically set cylinders with heat exchanging tubes installed in-between, the upper part of the central tube is fitted with a gas damper with the output end of its axis being connected to a drive mechanism which is presented as a lever coupled with a heat controller by a rod.

EFFECT: development of design for a tube-and-shell liquid-and-gas heat exchanger with automatic control.

4 dwg

FIELD: machine building.

SUBSTANCE: heat exchanger system through which the liquid flows comprises a heat exchanger with liquid inlet and outlet, a bypass valve with liquid inlet and outlet and a self-cleaning filter with a liquid inlet and two liquid outlets; one of the latter is meant for the filtered liquid and the other - for the unfiltered liquid. The filtered liquid outlet is connected to the heat exchanger inlet and the unfiltered liquid outlet - to the valve inlet, the heat exchanger outlet is connected downstream regarding the valve outlet.

EFFECT: heat exchanger clogging up is excluded.

9 cl, 3 dwg

FIELD: heating.

SUBSTANCE: during adjustment of a sealing gap depending on temperature between a movable seal and a rotary rotor of a regenerative heat exchanger, at least one adjustment device is used, comprising several rod elements, due to interaction of which with each other sliding adjustment of the seal is developed, at the same time at least two of these rod elements are controlled separately via according chambers with the help of a control medium of alternating temperature, so that these rod elements are exposed to different temperatures. The invention also relates to a regenerative heat exchanger, where such an adjustment device may be used, and the method to adjust sealing gaps.

EFFECT: development of a simple automatic and cheap method to adjust the seal in the regenerative heat exchanger.

25 cl, 5 dwg

Heat exchanger // 2363904

FIELD: heat engineering.

SUBSTANCE: invention relates to heat engineering, particularly to heat exchangers and can be used in heat exchanging or heat-transmitting devices. Heat exchanger with case, which allows primary inlet connection, primary exhaust connection, repeated inlet connection and repeated exhaust connection, between primary inlet connection and primary exhaust connection it is located primary flow path of primary side, and between repeated inlet connection and repeated exhaust connection it is located repeated flow path of repeated side, herewith primary flow path is in condition of heat exchange with repeated flow path.

EFFECT: improvement of heat exchanger parametres, achieved ensured by auxiliary control unit passes through the intermediate space, located between primary flow path and in repeated flow path.

16 cl, 4 dwg

FIELD: heating systems.

SUBSTANCE: automatic gas heater control device relates to control and monitoring systems. It contains the following parts connected to each other: controller, relay switching panel with electromagnetic relays, voltage converter, terminal plate, and LED indicators with built-in resistors. Controller is connected to LED indicators through the terminal plate. Controller, relay switching panel, and voltage converter are connected to terminals for output.

EFFECT: simplifying the design at maintaining the required functional capabilities.

4 cl, 3 dwg, 1 tbl

Heat exchanger // 2334929

FIELD: heating.

SUBSTANCE: invention is referred to thermal engineering and may be used in district heating systems for heating service water. Heat exchanger contains primary circuit channel located between inlet and outlet connections, secondary circuit channel located between supply pipeline assembly and return pipeline assembly, heat-conducting device between primary circuit channel and secondary circuit channel, and temperature sensor. Temperature sensor is located between secondary circuit channels close to connection with return pipeline. Besides, temperature sensor contacts with heat-conducting device or situates at small distance from it.

EFFECT: space saving in heat exchanger when temperature is measured and good results are achieved.

7 cl, 5 dwg

FIELD: systems for automatic control of technological processes for cooling natural gas with use of apparatus for air cooling, possibly in after-compressing stations of gas fields in northernmost regions for sustaining optimal operation modes of air cooling apparatus for natural gas.

SUBSTANCE: system includes frequency-controlled drive unit; unit for processing measurement information and for automatic control; temperature pickups; electronic unit of temperature pickups; computing unit; two actuating devices; blowers. Signals of temperature pickups are fed through electronic unit to unit for processing measurement information and for automatic control. Said unit for processing measurement information judges (on base of inlet signals) what blowers are to be used and sends respective electric signal to computing unit. With the aid of computing unit one actuating device turns on electric motors of blowers due to their alternative connection with frequency-controlled drive and connects with AC-source electric motors of blowers. Other actuating device controls temperature of walls of heat exchange tubes in all sections of air cooling apparatus of gas and connects with frequency-controlled drive electric motor of blower of that section where temperature of walls of heat exchange tubes differs from preset value. After achieving preset temperature value of walls of heat exchange tubes of selected section, apparatus turns off electric motor of blower from frequency-controlled drive and switches it to AC source. Similar operations may be realized for electric motors of blowers if necessary.

EFFECT: simplified system for automatic control of apparatus for air cooling of natural gas.

1 dwg

FIELD: heating engineering.

SUBSTANCE: space where surface of condensation locates is brought into communication with steam source and with atmosphere. Heat from surface of condensation is removed to group of individual heat consumers in such a way that heat comes to one group of consumers after another group is supplied with it due to the fact that space where surface of condensation locates is separated to a number of cavities relating in series to each other. The cavities form channel, which communicates steam source with atmosphere. Heat from parts of surface of condensation disposed at different cavities is removed separately each from another to different consumers. Device for realization of the method has vapor source connected with inner cavity of heat-exchange apparatus. The inner cavity communicates with atmosphere. Inner surface of heat-exchange apparatus communicates with atmosphere through internal cavity of at least one more heat-exchange apparatus. Heat-exchange apparatuses are connected with heat agent carriers of different consumers of heat. Internal surfaces of heat-exchanges apparatuses form at least one channel elongated in vertical direction.

EFFECT: selective heat supply from surface of condensation.

4 cl, 3 dwg

FIELD: heating systems.

SUBSTANCE: method comprises control of temperature of at least one of secondary flows of fluid in the secondary circuit which outflows from heat exchanger (1) by means of the primary flow in the primary circuit with the use of control members (5) and (11) that control the primary flow under the action of control unit (7), determining the difference of enthalpies of the primary flow that enters heat exchanger (1) and primary flow that leaves heat exchanger (1), measuring the secondary flow, measuring the flow in the primary circuit, and sending the parameters determined to control unit (7) for control of control members (5) and (11). As a result, the primary flow is controlled by the secondary flow so that the power supplied to the heat exchanger with the primary flow is, in fact, equal to the sum of the power required for the heating of the secondary fluid from the initial current temperature up to the specified outlet temperature, power required for the compensation of energy stored in heat exchanger (1), and power losses from heat exchanger (1). The description of the device for control of water temperature is also presented.

EFFECT: enhanced reliability.

13 cl, 9 dwg

FIELD: systems for automatic control of technological processes for cooling natural gas with use of apparatus for air cooling, possibly in after-compressing stations of gas fields in northernmost regions for sustaining optimal operation modes of air cooling apparatus for natural gas.

SUBSTANCE: system includes frequency-controlled drive unit; unit for processing measurement information and for automatic control; temperature pickups; electronic unit of temperature pickups; computing unit; two actuating devices; blowers. Signals of temperature pickups are fed through electronic unit to unit for processing measurement information and for automatic control. Said unit for processing measurement information judges (on base of inlet signals) what blowers are to be used and sends respective electric signal to computing unit. With the aid of computing unit one actuating device turns on electric motors of blowers due to their alternative connection with frequency-controlled drive and connects with AC-source electric motors of blowers. Other actuating device controls temperature of walls of heat exchange tubes in all sections of air cooling apparatus of gas and connects with frequency-controlled drive electric motor of blower of that section where temperature of walls of heat exchange tubes differs from preset value. After achieving preset temperature value of walls of heat exchange tubes of selected section, apparatus turns off electric motor of blower from frequency-controlled drive and switches it to AC source. Similar operations may be realized for electric motors of blowers if necessary.

EFFECT: simplified system for automatic control of apparatus for air cooling of natural gas.

1 dwg

Heat exchanger // 2334929

FIELD: heating.

SUBSTANCE: invention is referred to thermal engineering and may be used in district heating systems for heating service water. Heat exchanger contains primary circuit channel located between inlet and outlet connections, secondary circuit channel located between supply pipeline assembly and return pipeline assembly, heat-conducting device between primary circuit channel and secondary circuit channel, and temperature sensor. Temperature sensor is located between secondary circuit channels close to connection with return pipeline. Besides, temperature sensor contacts with heat-conducting device or situates at small distance from it.

EFFECT: space saving in heat exchanger when temperature is measured and good results are achieved.

7 cl, 5 dwg

FIELD: heating systems.

SUBSTANCE: automatic gas heater control device relates to control and monitoring systems. It contains the following parts connected to each other: controller, relay switching panel with electromagnetic relays, voltage converter, terminal plate, and LED indicators with built-in resistors. Controller is connected to LED indicators through the terminal plate. Controller, relay switching panel, and voltage converter are connected to terminals for output.

EFFECT: simplifying the design at maintaining the required functional capabilities.

4 cl, 3 dwg, 1 tbl

Heat exchanger // 2363904

FIELD: heat engineering.

SUBSTANCE: invention relates to heat engineering, particularly to heat exchangers and can be used in heat exchanging or heat-transmitting devices. Heat exchanger with case, which allows primary inlet connection, primary exhaust connection, repeated inlet connection and repeated exhaust connection, between primary inlet connection and primary exhaust connection it is located primary flow path of primary side, and between repeated inlet connection and repeated exhaust connection it is located repeated flow path of repeated side, herewith primary flow path is in condition of heat exchange with repeated flow path.

EFFECT: improvement of heat exchanger parametres, achieved ensured by auxiliary control unit passes through the intermediate space, located between primary flow path and in repeated flow path.

16 cl, 4 dwg

FIELD: heating.

SUBSTANCE: during adjustment of a sealing gap depending on temperature between a movable seal and a rotary rotor of a regenerative heat exchanger, at least one adjustment device is used, comprising several rod elements, due to interaction of which with each other sliding adjustment of the seal is developed, at the same time at least two of these rod elements are controlled separately via according chambers with the help of a control medium of alternating temperature, so that these rod elements are exposed to different temperatures. The invention also relates to a regenerative heat exchanger, where such an adjustment device may be used, and the method to adjust sealing gaps.

EFFECT: development of a simple automatic and cheap method to adjust the seal in the regenerative heat exchanger.

25 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: heat exchanger system through which the liquid flows comprises a heat exchanger with liquid inlet and outlet, a bypass valve with liquid inlet and outlet and a self-cleaning filter with a liquid inlet and two liquid outlets; one of the latter is meant for the filtered liquid and the other - for the unfiltered liquid. The filtered liquid outlet is connected to the heat exchanger inlet and the unfiltered liquid outlet - to the valve inlet, the heat exchanger outlet is connected downstream regarding the valve outlet.

EFFECT: heat exchanger clogging up is excluded.

9 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: automatic keeping of a heat carrier temperature inside a tube within the specified range is performed. A liquid-and-gas tube-and-shell heat exchanger with an automatic control system for the heat exchange process control comprises a casing from two concentrically set cylinders with heat exchanging tubes installed in-between, the upper part of the central tube is fitted with a gas damper with the output end of its axis being connected to a drive mechanism which is presented as a lever coupled with a heat controller by a rod.

EFFECT: development of design for a tube-and-shell liquid-and-gas heat exchanger with automatic control.

4 dwg

FIELD: heating.

SUBSTANCE: heat exchanging plate for plate heat exchanger contains a heat transfer zone (10) and edge zone (11), extended around the heat transfer zone. The heat exchange plate is a plate with a double wall formed by two adjacent plates, compressed to be contacted with each other. The heat exchange plate contains the sensor (20), which is designed with a possibility of determination, at least, one parameter and output of the parameter-dependent signal, and the sensor has a sensor probe (21), designed to be located between adjacent plates.

EFFECT: improvement of leak detection in plate heat exchangers with the plates with double walls.

18 cl, 9 dwg

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