SU1606818A1 - Heating station - Google Patents

Abstract

The invention relates to a power system and can be used for centralized heat supply of consumers with a mixed heat load with a closed system of heating networks with central and local heating stations. The aim of the invention is to reduce operating and energy costs by eliminating seasonal fluctuations in cold water temperature, fluctuations in hot water and coolant flow rates. When the consumer draws hot and cold water, not exceeding the hourly average flow rate, cold water from the domestic drinking water supply pipeline 5 enters the additional heat exchanger 13 of the first stage, is heated there with network water after the main heat exchanger 3 of the first stage and then a part goes to further heating to the heat exchanger 3 of the first stage, and partly to the storage tank 12 and to the cold water pipeline 8 to the consumer. The heat pump 9 uses the evaporator 10 to take the heat of the return supply water from the additional heat exchanger 13 and passes it through the condenser 11 of the network water at the entrance to the heat exchanger 3 of the first stage. Another heat pump 16 through the evaporator 17 takes heat from the cold water of the pipeline 8 and through the condenser 18 transfers this heat to the heated water of the pipeline 14. 2 Il.

Description

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The invention relates to a power system and can be used for centralized heat supply of consumers with a mixed heat load with a closed system of heating networks with central and local heating stations.

The purpose of the invention is to reduce operating and energy costs by eliminating seasonal fluctuations in the temperature of cold water, fluctuations in the flow of hot water and heat carrier.

Fig, 1 shows the basic scheme of the heat point; in fig. 2 is the same as the execution example.

The heat point contains supplying 1 and 2 return pipelines of the heat supply network, heat exchangers 3 and 4 of hot water supply of the first and second stages with heating and heated lines, connected respectively by heating lines to the return 2 and supplying 1 pipelines of the heating network drinking water pipeline, pipes 6-8, respectively, hot, circulating and cold water, the first of which are connected to the heated line of the heat exchanger 4 of the second stage, and the heat pump 9c with an evaporator 10 and condensate 11 th.

The heat point also contains a tank accumulator 12 and an additional heat exchanger 13 of the first stage, which is sequentially installed along the heating line after the main heat exchanger of the second stage, and along the heated line is connected to the drinking water pipeline 5 and the heated pipe 14. water to the main heat exchanger 3 of the first stage, and the storage tank 12 is connected to the pipeline 5 to enter the drinking water supply, to the pipeline 8 of cold water and to the pipeline 14 of the heated water between exchangers 3 and 13 of the first stage. The evaporator 10 of the heat pump 9 is installed on the heating line after the additional heat exchanger 13 of the first stage, and the condenser 11 on the heating line to the main heat exchanger 3 of the first stage. In addition, the substation includes a pump 15, a heat pump 16 with an evaporator 17 and a condenser 18. installed respectively in the cold water pipeline 8 and the heated water pipeline 14, the circulation pump 19. temperature and flow controllers and valves (not labeled).

In the heat point diagram of FIG. 2 condenser 11 heat pump 9 install

flax on the pipeline 14 heated water. and the storage tank 12 contains a bypass pipe 20 with a temperature controller and a check valve 21 installed on 5 pipe 8 of cold water to the place where the bypass pipe 20 is connected to it.

Thermal point works as follows.

10 When the total water consumption by the consumers of hot and cold water, not exceeding the hourly average water, cold water from the domestic drinking water supply pipeline 5 enters the additional heat exchanger 13 of the first stage, it is heated in him by the network water after the heat exchanger 3 of the first stage; then a part of the water goes to further heating to the heat exchanger 3 of the first stage, and 20 part to the storage tank 12 (the tank is charged) and to the cold water pipe 8 to the consumers. From the heat exchanger 3 of the first stage, the water is heated with a flow rate equal to water intake in the hot water supply system 5, through the heated water pipeline 14 enters the second stage heat exchanger 4, from which, after heating to the calculated temperature, enters the hot water system 6 in the hot water supply system. The heat pump 9 through the evaporator 10 takes the heat of the return network water at the outlet of the additional heat exchanger 13 and transfers it through the condenser 11 of the network water at the inlet to the heat 5 exchanger 3 of the first stage. Due to this, the temperature difference in the heat exchangers increases, which allows reducing the heating surface. The heat pump 16 through the evaporator 17 takes the heat of the cold water from the pipe 8 and through the condenser 18 transfers this heat to the heated water in the pipe 14. Due to this, the heating surface of the second heat exchanger 4 of the second stage decreases, the flow rate of the heat transfer medium 5 the flow of hot water at water faucets and from pipeline 6 (due to an increase in cold water temperature), the metal intensity of heating networks and hot water supply systems 0 and, in general, seasonal fluctuations in temperature of cold water are excluded water and fluctuations in hot water and heat carrier flows.

55 At the total water in the hot and cold water supply systems above the hourly average, the missing water flow in pipelines 14 and 8 is complemented by the water flow from the storage tank.

 which is completely discharged when

maximum drainage by consumers.

The scheme of the heat point can be implemented without the installation of a heat pump behind the heat exchanger 3 of the first stage (Fig. 2). In such a scheme, the heat point is made with a bypass pipe 20 having a temperature controller connecting the pipe 5 to the drinking water supply pipeline and the cold water pipe 8. A non-return valve 21 is installed on the cold water pipe 8. The condenser 11 of the heat pump 9 is connected to the heated water pipe 14 at the outlet of the heat exchanger 3 of the first stage. In order to maintain the temperature of the water in the pipe 8, the water temperature controller, if necessary, reduces or increases the water bypass from the pipe 5.

Claims (1)

Invention Formula The thermal point of the closed heat supply system containing the supply and return pipelines of the heating network, heat exchangers of hot water supply of the first and second stages with heating and heated lines, connected respectively to the heating lines to the return and supply pipelines of the heating network, the input pipe of the drinking water pipeline, hot, circulating and cold water pipelines, 5 of the first of which are connected to the heated heat exchanger line of the second stage, heat pump and controllers, about tons of l and h This is due to the fact that, in order to reduce operating and energy costs 0 by excluding seasonal fluctuations in the temperature of cold water and fluctuations in the flow of hot water and teguyuositel, the heat point additionally contains a storage tank and an additional heat exchanger 5 of the first stage, which is sequentially installed along the heating line after the main heat exchanger of the first stage, and the heated line is connected to the drinking water supply line before the main heat exchanger of the first stage, the storage tank is connected to the household input pipe drinking water pipeline, to the cold water pipeline and to the heated line between the first-stage heat exchangers, the evaporator of the heat pump is installed on the heating line after the additional heat exchanger, and Sator - on the heating line prior to the main heat exchanger per0 howling stage. FIG. 2