The district heating system

 

(57) Abstract:

The invention relates to a power system, in particular to a district heating residential, public and industrial buildings and structures. The heating system includes forward and reverse pipelines thermal network, creating together with the local circuit of the heating devices of the building, the centralized system of the brine in which the return line return fluid connected with the separation of the heat exchanger low-temperature heating system floor heating panels. The technical result is to increase the efficiency of the district heating system by increasing the coefficient of thermal energy of the heat carrier. 1 Il.

The invention relates to a power system, in particular to the field of district heating residential, public and industrial buildings and constructions that have thermal points connected with the forward and reverse main pipelines centralized system for circulation of a coolant from a Central boiler or CHP (hereinafter teplotsentralnaya substations buildings [1, 2], in which the coolant coming from a straight pipe of a heating plant, is used in the circuit of the heating devices of the building and then returned from thermal point of a building in the return pipe of the heating plant.

The main disadvantage of such a centralized heating system is that the temperature of the coolant returned from thermal unit building in the reverse main pipe of a heating plant, relatively high temperature environment, however, is insufficient to further the intended purpose of the fluid [3, 4]. This district heating system has a low coefficient of thermal energy for direct heat transfer medium and large heat losses to the environment during the transportation of the reverse thermal fluid to the source of district heating - Central boiler or CHP. In the latter case, this system has another drawback - the need for additional, deeper cooling of the return fluid for further use in the process cycle CHP.

The task of the invention is to create a new schema systemeffective district heating systems due to the increase of the coefficient of thermal energy of the heat carrier, circulating pipelines, reducing the transport of heat losses by reducing the return temperature of the heat carrier, and reducing process costs more, deeper cooling of the return fluid in the case when the source of district heating is the CHP.

The problem is solved by application of the scheme of the centralized heat supply systems, including direct and reverse pipelines thermal network, creating together with the local circuit heating appliances building a centralized system of circulation of the heat carrier, in which, according to the invention, to the return line return fluid connected with the separation of the heat exchanger low-temperature heating system floor heating panels "Warm floor".

The proposed system is useful thermal energy of the return fluid, which is used for heating is connected to the opposite main pipeline with the separation of the heat exchanger low-temperature heating system floor heating panels "Warm floor". Thus, the use of thermal energy of the heat carrier, circulating pipelines, reducing the transport of heat losses by reducing the return temperature of the heat carrier, and reducing process costs more, deeper cooling of the return fluid in the case when the source of district heating is the CHP.

Comparative analysis of the claimed system and prototype reveals the presence of distinctive features in the proposed system in comparison with the closest analogue that allows to make a conclusion on the conformity of the proposed solutions to the criterion "novelty".

The comparison of the proposed solutions not only prototype, but also with other technical solutions in this field of technology has led to the conclusion that it is not obvious from the prior art and, therefore, meets the criterion of "substantial differences".

The presence of distinctive features provides the ability to get a positive effect in terms of the efficiency of the proposed system.

The use of the invention in a power system ensures compliance with the criterion of "industrial applicability".

The invention of predlozheniya 1 includes direct and inverse 2 pipes heating network, creating together with the local circuit heating appliances building 3 system centralized circulation of the coolant. To the return line 2 a heating system return fluid connected with the separation of the heat exchanger 4 low-temperature heating system floor heating panels "Warm floor" 5.

It is known that in the system of centralized heat supply of the fluid to be transported directly to the main pipe 1, has a temperature of up to 150oC and passes through heater building (in the role of a mixing unit) with a temperature of 85-105oC in a heating system with a local heating devices such as radiators, a member of the local circuit of the heating system of the building 3. Used coolant with a temperature of about 65-70oC goes through thermal unit building in the reverse main pipe 2. Then return the coolant return pipe 2 having the above temperature settings, enters the primary circuit dividing the heat exchanger 4, where it transfers its thermal energy to the coolant circulating through the secondary circuit of the heat exchanger 4 to the floor" 5.

Thus, the efficiency of the district heating system is enhanced by the use of thermal energy of the return fluid in the low-temperature heating system floor heating panels "Warm floor", which leads to lowering the return temperature of the heat carrier and, consequently, to the increase of the efficiency of use of thermal energy transported by the coolant in the system of centralized heat supply.

Sources of information

1. Aparcel M M "Recommendations for adjustment of water heating systems". The scheme of the heat input from independent attach the heating system. The Bureau of technology. information, M. 1968, 46.

2. Gromov N. To. "Urban district heating systems); Energy, 1964, p 103. (prototype)

3. SNiP 2.04.05-91*"Heating, ventilation and air conditioning), Gosstroy of Russia, 1998, S. 4-10, Applications 1, 2.

4. SNiP 2.04.07-86 "Thermal networks", M, GOS.construction Committee of the USSR, 1987.

The district heating system, including direct and reverse pipelines thermal network, creating together with the local contours circulation heaters buildings system center is Telem connected with the separation of the heat exchanger low-temperature heating system floor heating panels.

 

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