Method for heat pump operation

FIELD: heating.

SUBSTANCE: method for operation of heat pump may be used in refrigerating equipment and in heat pump sets for heat and cold supply to consumer. Mentioned technical problems are solved by method of heat pump operation, which includes serially realised processes of working medium compression and expansion with its transition from compression chamber to expansion chamber and back with heat removal after compression process and heat supply after expansion process, at that compliance of pressure value in the end of expansion process to pressure value in the beginning of compression process is maintained by means of additional working medium supply to expansion chamber, in which expansion process is realised in at least two expansion chambers, and supply of additional working medium in expansion chambers is realised by means of its transfer directly from one expansion chamber to the other.

EFFECT: increased efficiency parametres of heat pump.

1 dwg

 

The invention relates to refrigeration and can be used in the heat pump device for supplying consumers with heat and cold.

The known method of operation of a heat engine (Patent RF №2077004, F03G), comprising sequentially processes of compression and expansion of the working fluid transition him from the compression chamber into the chamber extension and back with heat after compression and supply of heat after the enlargement process, and the line pressure at the end of the process of expansion of the pressure value at the beginning of the compression process support by filing in the camera extension additional work body

The disadvantage of this method is that additional working fluid passes through the heat exchanger low temperature capacity where it is fed to the heat. This increases the temperature of the working fluid at the inlet of the heat exchanger with a low thermal capacity, and therefore, reduces the temperature difference between the working fluid and the coolant and increases the mass flow of the working fluid through the heat exchanger. As a result, increase of thermal and gas-dynamic losses in the heat exchanger and reduces the efficiency of a heat engine, and these losses increase with the increase of the ratio of temperatures in heat exchangers, as this increases the I number of additional working fluid.

Problems solved by this invention are an increase in the effective performance of the heat pump.

These technical problems are solved by the method of operation of a heat pump, comprising sequentially processes of compression and expansion of the working fluid transition him from the compression chamber into the chamber extension and back with heat after compression and supply of heat after the enlargement process, and the line pressure at the end of the process of expansion of the pressure value at the beginning of the compression process support by filing in the camera extension additional working medium, characterized in that the expansion process produces at least two expansion chambers, and the filing of additional working fluid in the expansion chamber is carried out by moving it directly from one camera to another extension.

The invention is illustrated in the drawing, which shows a diagram of a heat pump.

The method of operation of a heat pump is as follows.

The working fluid is compressed in the chamber 1 compression. After compressing the working fluid passes alternately into the chambers 2 and 3 extend through AutoClean 4, the heat exchanger 5, the regenerator 6 and controlled valves 7 and 8. After the process of expanding the working fluid enters the chamber 1 through controlled compression valves 9 and 10, the heat exchanger 1, the regenerator 6 and AutoClean 12. The amount of heat exchangers significantly larger volumes of the chambers of the compression and expansion and pressure in the process changes slightly. Therefore, the number of chambers of the expansion does not depend on the number of cameras compression. Cameras 2 and 3 extensions are in antiphase, that is the end of the expansion process in the cell 2 extension coincides with the release of the working fluid from the chamber 3 expansion. The ratio between the maximum volume of the chamber 1 and compression chambers 2 and 3 extensions are subject to the minimum of the relationship of the temperatures at the beginning of the compression process and at the end of the expansion process. With increasing ratio of temperature, the maximum volume of the chambers 2 and 3 expansion becomes greater than the volume of the working fluid at the end of the expansion process and the working fluid passes from one expansion chamber to another through AutoClean 13 and 14 at a pressure corresponding to the pressure of the working fluid at the beginning of the compression process, thereby removing pressure surges when connecting the expansion chamber to the heat exchangers. Thus, additional working fluid passes directly from one cell to another with a minimum of gas-dynamic losses, and the working fluid after expansion enters the heat exchanger at a temperature equal to the temperature at the end of the expansion process, that is, at max the maximum possible temperature difference between the working fluid and coolant that increases the efficiency of the heat exchanger. All of this increases the effective performance of the heat pump.

The method of operation of a heat pump, comprising sequentially processes of compression and expansion of the working fluid transition him from the compression chamber into the chamber extension and back with heat after compression and supply of heat after the enlargement process, and the line pressure at the end of the process of expansion of the pressure value at the beginning of the compression process support by filing in the camera extension additional working medium, characterized in that the expansion process produces at least two expansion chambers, and the filing of additional working fluid in the expansion chamber is carried out by moving it directly from one cell expansion in another.



 

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