RU69615U1 - HEAT CONSUMPTION SYSTEM - Google Patents

Abstract

A heat consumption system containing the supply and return pipelines with a return water mix and a heat pump with heat exchangers, in which the heat pump is mounted on the return piping with a refrigerator - to the return piping, and with a heater - to the mix contour.

Description

The inventive utility model relates to the field of power engineering and can be used in heating systems of residential, administrative and industrial buildings.

A known heat supply system [1], the operation of which includes heating the mains water, supplying hot water through a supply main pipe to a heating system directly connected to a water heating network, and returning chilled water through a return main pipe, in which the cooled water of the return main pipe is additionally cooled in the evaporator of the heat pump, and with the heat taken from the water of the return main pipe, in the condenser of the heat pump heats up in and circulating in the heating system.

The disadvantage of the system is its lack of efficiency in heat removal.

A heat supply system [2] is also known, containing basic and peak heat sources connected by heating networks to subscribers, in which network heaters of cogeneration turbines of thermal power plants are installed as basic heat sources, and autonomous heat sources for each of the subscribers are installed as peak heat sources. The subscribers have heat pumps installed as autonomous peak heat sources, which are connected on the cold side to the return pipe of the subscriber’s heat network.

The disadvantage of this system is also inefficient heat removal.

Closest to the claimed one is a heat consumption system [3], including main pipelines of centralized heating, additionally containing a heat pump installed with the ability to connect both to the main pipeline with heated water and to the main pipeline with cold water. Depending on the season, the heat pump is used either to heat water in the supply pipe or to lower the temperature in the return pipe.

Its disadvantage is the complexity and bulkiness of the system, as well as the impossibility of using a structurally simple, and therefore, cheap heat pump with a low temperature gradient and the associated problems in the design, installation and operation.

The purpose of the proposed technical solution is to maximize the efficiency of heat removal of existing and newly designed heat consumption systems, the most simple and cheap way.

This goal is achieved due to the fact that in the well-known heat consumption system that contains the supply and return pipelines with a return water mix and a heat pump with heat exchangers, the heat pump is installed on the return piping with a refrigerator - to the return piping, and with a heater - to the mix contour.

Figure 1 presents the inventive heat consumption system, where:

1 - supply pipe from the highway;

2 - mixing unit;

3 - feed pipe heating branch;

4 - recirculation contour mix;

5 - return pipe heating branch;

6 - heat pump refrigerator;

7 - heat pump heater;

8 - heat consumer.

The heat consumption system operates as follows: the coolant flows through the supply pipe 1 to the mixing unit 2. In the mixing unit, the incoming heating medium is mixed with the heating medium from the recirculation circuit of the mixing of the return pipe 4, after which it enters the heating branch 3. The heat carrier from the heating branch 5 is divided into two threads. The heat pump transfers unused thermal energy from the coolant flowing into the external network to the flow of the recirculation circuit of the mixture. The refrigerator 6 of the heat pump is included in the flow of coolant flowing into the heat network. The heater 7 of the heat pump is included in the recirculation circuit of the mixture. Due to this installation of the heat pump, it is possible to transfer thermal energy through it with a small temperature gradient.

An example of a specific implementation. A standard chiller is installed in the individual heat point of the heat-consuming object, which performs the function of a heat pump, so that its refrigerator is included in the flow of heat carrier flowing into the heat network, and the heater is included in the recirculation mixture circuit. The chiller setpoint on the cooling side determines the permissible return temperature to the heating network. Heat consumption automation controls the heat supply process of the facility. Due to the operation of the chiller, the temperature of the return water to the heat network decreases by 8 ° С ÷ 20 ° С, which is equivalent to obtaining a temperature gradient on the heat pump of 16 ° С ÷ 40 ° С.

The inventive heat consumption system allows simple means to provide high performance in terms of heat removal, easy to manufacture.

BIBLIOGRAPHY

1. Application No. 2003102574 BIPM No. 30 (Part II), 2004

2. Application No. 2003115796 BIPM No. 36 (Part III), 2004

3. RF patent No. 2111114 BI No. 30, part 2, 1998 (prototype)

Claims (1)

A heat consumption system containing a supply and return piping with a return water mix and a heat pump with heat exchangers, characterized in that the heat pump is installed in the return piping with a refrigerator - to the return piping, and a heater - to the mix contour.