Absorption compression type automatic-overlapping refrigerating system and use method

Abstract

The invention discloses an absorption compression type automatic-overlapping refrigerating system and a use method. The absorption compression type automatic-overlapping refrigerating system comprises a generator and the like; the generator is communicated with a solution heat exchanger which is communicated with an absorber; the absorber is further communicated with the solution heat exchanger which is communicated with the generator; the generator is communicated with a condenser which is communicated with a gas-liquid separator; the gas-liquid separator is further communicated with an evaporative condenser which is communicated with a first gas-liquid heat exchanger, the first gas-liquid heat exchanger is communicated with an evaporator which is communicated with the first gas-liquid heat exchanger, and the first gas-liquid heat exchanger is communicated with the evaporator which is communicated with the first gas-liquid heat exchanger communicated with a compressor; the gas-liquid separator is communicated with the evaporative condenser; the compressor and the evaporative condenser are communicated with the absorber.

Description

technical field [0001] The invention relates to the technical field of refrigeration and air-conditioning equipment, in particular to an absorption-compression self-cascading refrigeration system and its use method. Background technique [0002] The self-cascade refrigeration system uses mixed working fluids with different boiling points, through multi-stage gas-liquid separation, relying on the mutual coupling of the evaporation heat of the high-boiling point excess components and the condensation and heat release of the low-boiling point excess components to obtain a relatively high temperature. Low refrigeration evaporation temperature, and the variable temperature characteristic of the mixed working fluid can reduce the irreversible loss of the evaporator. The self-cascading refrigeration system's evaporating temperature has a smaller dependence on pressure than the usual refrigeration system, so its throttling loss and compressor pressure ratio are also small, and usual...

AI Technical Summary

Problems solved by technology

This system can obtain a lower evaporation temperature in the case of single-stage fractional condensation, but the low-boiling-point surplus working fluid circulation in this system relies heavily on the work of the compressor, so it cannot make more use of low-grade heat sources

The patent application number is 200910304102.1 discloses a pressurized absorption type self-cascading absorption refrigeration cycle system, the main feature of this system is to use the high-pressure liquid coming out of the gas-liquid separator to enter the ejector and eject it from the evaporator The low-pressure steam has a certain boosting effect on the low-pressure steam, but the ejector is a device with a large irreversible loss, which has a great impact on the system efficiency

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