Two-stage throttling complete cooling carbon dioxide refrigeration/ heat pump comprehensive experimental bench

Abstract

The invention discloses a two-stage throttling complete cooling carbon dioxide refrigeration / heat pump comprehensive experimental bench. The experimental bench is constituted by a water system and a refrigerant system and comprises a carbon dioxide low pressure compressor, a first carbon dioxide oil separator, a first carbon dioxide gas-liquid separator, a second carbon dioxide gas-liquid separator, a carbon dioxide high pressure compressor, a second carbon dioxide oil separator, a refrigerant stop valve group, a first carbon dioxide shell-and-tube heat exchanger, a second carbon dioxide shell-and-tube heat exchanger, a first carbon dioxide finned tube heat exchanger, a second carbon dioxide finned tube heat exchanger, a first electric heater, a second electric heater, a first single type air conditioner, a second single type air conditioner, a first water pump, a second water pump, a first thermal insulation water tank, a second thermal insulation water tank, a flowmeter group, a drying and filtering device and the like. According to the comprehensive experimental bench, by operating on-off states of corresponding refrigerant stop valves, a two-stage trans-critical carbon dioxide air-cooling refrigeration system, an air source heat pump, a water-cooling refrigeration system, an air source condensation heat recovery system, an air-cooling water chilling unit system, a water source heat pump, a water-cooling water chilling unit system and a water source condensation heat recovery system of two stage throttling and completely cooled in the middle can be simulated.

Description

technical field [0001] The invention relates to a heat pump system, in particular to a two-stage throttling complete cooling carbon dioxide refrigeration / heat pump comprehensive experiment platform. Background technique [0002] At present, most of the two-stage transcritical carbon dioxide experimental systems used in colleges and universities are simple heat pump systems, which have relatively single functions and low equipment utilization, which has caused a huge waste of resources invisibly; at the same time, scattered and single-function The test bench will occupy a large laboratory area; colleges and universities urgently need to integrate heat pump systems with single functions to reduce the floor area, improve the utilization rate of equipment, reduce the waste of the school in experiments, and improve the comprehensiveness of the school's experimental equipment. utilization rate. Contents of the invention [0003] Aiming at the above-mentioned prior art, the pres...

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Problems solved by technology

[0002] At present, most of the two-stage transcritical carbon dioxide experimental systems used in colleges and universities are simple heat pump systems, which have relatively single functions and low equipment utilization, which has caused a huge waste of resources invisibly; at the same time, scattered and single-function The test bench will occupy a large laboratory area; colleges and universities urgently need to integrate heat pump systems with single functions to reduce the floor area, improve the utilization rate of equipment, reduce the waste of the school in experiments, and improve the comprehensiveness of the school's experimental equipment. utilization rate

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