Composite type full-liquid type heat converter for refrigerant circulation system

Abstract

The invention discloses a compound and flooded heat exchanger used in a refrigerant circulatory system; wherein, the refrigerant flows through the outside of a tube bundle to conveniently carry out heat exchanging with the heat transfer medium flowing in the tube bundle; the bundle comprises at least two varieties of tubes suitable for different heat exchanging types, that is, at least comprises a heat exchange tube suitable for the evaporation of the refrigerant and a heat exchange tube suitable for the condensation of the refrigerant. Compared with the dry evaporator adopted by a traditional heat pump, the compound and flooded heat exchanger of the invention increasing the heat exchanging efficiency remarkably; compared with the flooded evaporator, the compound and flooded heat exchanger of the invention increases the heat exchange efficiency as a condenser. The compound and flooded heat exchanger of the invention can be used as a flooded evaporator and also be used as a condenser, thereby especially being suitable for being used in a heat pump device.

Description

technical field [0001] The present invention generally relates to a heat exchanger for a refrigerant circulation system, and in particular to a composite flooded heat exchanger for a heat pump refrigerant circulation system. The present invention also relates to a heat exchange process using the composite flooded heat exchanger. Background technique [0002] Conventional heat pump refrigerant cycle systems (such as heat pump chillers) have been widely used in various air-conditioning occasions. This conventional heat pump unit usually includes a reciprocating or screw compressor, a first heat exchanger (dissipating heat to the outside in the refrigeration cycle and absorbing heat from the outside in the heating cycle), an expansion device, and ( The second heat exchanger that absorbs heat from the outside in the refrigeration cycle and discharges heat to the outside in the heating cycle. [0003] The second heat exchanger functions as an evaporator in the refrigeration cyc...

AI Technical Summary

Problems solved by technology

However, this flooded evaporator is only suitable for refrigerant evaporation type heat exchange, not suitable for refrigerant condensation type heat exchange

If such an evaporator is used in a heat pump unit, the evaporator will be improperly and unfavorably used as a condenser during the heating cycle, which will significantly reduce the condensation effect and the efficiency of the entire cycle

Of course, the size and heat exchange area of ​​the evaporator can be increased to obtain the desired condensation effect, but this will increase the manufacturing cost and difficulty

Images