SU1758370A1 - Heat pump installation - Google Patents

Abstract

Use: heating and hot water technology. SUMMARY OF THE INVENTION: Compressor 1 driven by a heat engine 2. A condenser 3, an inductor 4 and an evaporator 5 are successively interconnected by a loop 6. A capacitor Ccb is connected by a loop 7 with a consumer 8 of low heat. Engine cooling system 9 and exhaust system 10 through heat exchanger 11 and high temperature circuit 12 are connected to customer 13. There is a dual circuit inter-cavity heat exchanger 14 connected to the bypass line 26 and circuits 7 and 12, regulating device 15 and valves 16-25 . In order to transfer heat from circuit 7 to circuit 12, coolant from circuit 12 passes through a heat exchanger 14, valves 1b-19 being opened, device 15 and valve 20 closed. In this case, in the circuit 7, the coolant passes through the valve 24. The regulator 27 of the engine speed 2, connected by a line 28 with the temperature sensor 29, maintains the temperature in the circuit 7 at a predetermined level, regulating the engine speed 2. 1 cf, f- ly, 1 il. 8 2JX 23 24X22

Description

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The invention relates to heating and hot water technology.

A known heat pump installation, comprising a compressor with a drive, a condenser, a throttle valve and an evaporator, successively communicated by means of a refrigerant circulation circuit, the condenser being connected in parallel through the circuit to a consumer of hot water and heating.

A disadvantage of the known heat pump installation is the increased energy costs for heating water for hot water supply and heating due to the lack of utilization of heat generated by the engine (drive).

Also known is a heat pump installation containing a gas-driven compressor, a condenser, an adjustable valve and an evaporator, successively communicating with each other via the working fluid circuit, the condenser being connected to a low-potential heat carrier through a low-temperature coolant consumer through the heat exchanger and high-temperature circuit - to the heating system - to the consumer of high potential coolant.

The disadvantage of this heat pump installation is its low efficiency in the warm period of the year with the heating system emitted by the engine disconnected, as well as the inability to control the heat output of the installation depending on the temperature of the heated water at the inlet to the consumer of hot water supply.

The purpose of the invention is to regulate the heating capacity of the installation.

The goal is achieved by the fact that in a heat pump installation containing a compressor driven by a heat engine, for example, a GTU or an internal combustion engine, having an exhaust line with a heat exchanger, heat exchanger, a throttle and an evaporator, successively communicated to each other by the circulation circuit of the working fluid, with a condenser connected through 4 low-temperature circuit to the consumer of the low-potential coolant, and the engine cooling system through the heat exchanger-utilizer and the high-temperature circuit - with the consumer heat of high potential, additionally installed intercircuit two-cavity heat exchanger, one cavity of which is connected to the outlet from the condenser and to the bypass line between two valves connected in parallel

low potential heat consumer. The other cavity of the contour heat exchanger is connected to the high-temperature circuit through valves, while

The high-temperature circuit further comprises a regulating device installed after the high-potential heat consumer and connected in parallel to the inter-circuit heat exchanger.

0 In addition, the installation can be equipped with a temperature sensor connected by a communication line to the speed control of the drive engine. The temperature sensor is installed at the output of low-temperature

5 contour.

Connecting an additional heat exchanger to the supply lines of low- and high-temperature circuits, respectively, from the condenser and heat exchanger heat exchanger, with the possibility of an adjustable message of the additional heat exchanger on the coolant using switchable and adjustable elements to the high-temperature

5 contour while simultaneously disconnecting from a low-temperature contour or adjustable message on the coolant to the low-temperature contour while simultaneously disconnecting from the high-temperature contour provides the ability to control the heat output of the installation as a result of an increase in the degree of heat insulation of the compressor drive in the period of the 5th heat. also due to more complete use of the condensate heat and during the period of reduced demand from consumers teplonosi0 tel low potential.

Using a temperature sensor installed at the outlet of the low-temperature circuit from the additional heat exchanger and connected through

5, the speed regulator to the gas drive of the compressor, allows, if necessary, to reduce or increase the number of revolutions of the compressor (heating capacity of the plant), to maintain the water temperature in

0 low-temperature circuit at the required level and thereby regulate the heat output of the installation during the period of minimum loads.

The drawing shows the principal scheme of the heat pump installation,

The heat pump installation contains a compressor 1 driven by a heat engine 2, a condenser 3, a throttle 4 and an evaporator 5. successively communicated to each other using a circulating

circuit b, while the condenser 3 is connected via a low-temperature circuit 7 to a low potential consumer 8, and si (engine cooling 9, engine 9 and exhaust system 10 through a heat exchanger-heat exchanger 11 and a high-temperature circuit 12 to a high potential heat carrier consumer 13. In order to control the heat output, it is supplied with an additional control device 15 and a double-circuit intercavitary heat exchanger 14, which is connected to the supply lines, low and high temperature circuits 7 and 12, respectively. from the condenser 3 and the heat exchanger-utilizer 11 with the possibility of the controlled communication of the additional heat exchanger 14 through the valves 16-25 with the high-temperature circuit 12. The low-temperature circuit 7 contains the bypass line 26. The regulator 27 of the engine speed 2 is connected with the sensor 29 temperature low temperature circuit 7.

The installation works as follows.

If necessary, transfer part or all of the heat from the low-temperature circuit 7 to the high-temperature circuit 12, the coolant from the return line of the high-temperature circuit 12 passes through the heat exchanger 14, with the valves 16-19 open, the regulating device 15 and the valve 20 are closed, and take part or all of the heat low-temperature circuit 7, and then the engine cooling system 9 and the heat exchanger-heat exchanger 11 to the consumer 13, while in the low-potential circuit 7 the heat transfer medium partially or completely passes through the additional tional heat exchanger 14 and through the valve 24 in the return line and the remaining portion is supplied through a valve 25 to a consumer 8, the low temperature circuit 7.

If it is necessary to transfer part or all of the heat from the high-temperature circuit 12 to the low-temperature circuit, the heat carrier of the high-temperature circuit 12 partially or fully through the valve 20 is fed to an additional heat exchanger 14, where it transfers the heat to the low-temperature circuit 7 and returns to the return line through the valve 18. In this case, the locking and regulating authority 19 is closed. In the low-temperature circuit 7, the coolant passes through an additional heat exchanger 14 and then through the locking and regulating bodies.

23 and 21 to consumer 8 through loop 26, with the locking and regulating authorities

24 and 25 are closed. Engine speed regulator 27. Associated with signal

line 28 with temperature sensor 29 of low-temperature circuit 7, maintains the temperature in the flow line of low-temperature circuit 7 at a predetermined level by controlling the speed of the engine 2 and, therefore, adjusting the heat output of the plant.

Claims (2)

1. Heat pump installation, containing in series connected a circulating circuit compressor, condenser, choke and evaporator, the condenser being connected to a low-potential heat consumer with a low potential heat consumer; the compressor is equipped with a heat engine having an exhaust line with a heat exchanger-heat exchanger and a cooling system connected to the high temperature circuit through a heat exchanger utilizing consumer high potential heat, characterized in that, in order to control the heat output, the high-temperature circuit additionally contains a regulating device installed after a high-potential heat consumer along the coolant, the low-potential circuit is equipped with a bypass line with two valves around capacity and intercircuit two-cavity heat exchanger, one cavity of which is connected to the outlet from the condenser and to the bypass line between the valves, and the other cavity to the high-temperature the circuit is mains with its own valves, the first line being connected to the high-temperature circuit between the high potential heat consumer and the regulating device, the second is between the regulating device and the heat engine cooling system, and contains an additional line with its regulating valve connecting it with the high-temperature contour between the heat exchanger-utilizer and high potential heat consumer. 2. Installation according to claim 1, characterized in that the low-temperature circuit is additionally equipped with a temperature sensor installed downstream of the condenser along the coolant, and the engine is equipped with a speed regulator connected to the temperature sensor.