Evaporator heat exchange system applicable to heating in northern areas

Abstract

The invention discloses an evaporator heat exchange system suitable for heating in northern areas, and relates to the technical field of evaporators. The system comprises a supercooling pipe, a throttle valve, a liquid distribution head, flow distribution capillary tubes, a finned sleeve heat exchanger, a gas collection branch pipe, a gathering pipe and a pipeline; the throttle valve and the liquid distribution head are fixedly mounted on the supercooling pipe in sequence through the pipeline; the liquid distribution head is fixedly connected with the two flow distribution capillary tubes; the two flow distribution capillary tubes both communicate with the finned sleeve heat exchanger; the finned sleeve heat exchanger communicates with the gathering pipe through the gas collection branch pipe; and the gathering pipe communicates with the supercooling pipe. According to the system, a gas-liquid phase refrigerant passing through the flow distribution capillary tubes is guided to the evaporator, and the refrigerant subjected to heat exchange is distributed into two parallel paths, so that the on-way resistance of a gaseous refrigerant is reduced, and the overall pressure drop of the path is reduced; a counter-current flow heat exchange mode is formed by the overall distribution trend and the air direction; and the low-temperature heating capacity and the low-temperature heating reliability and stability of a unit are improved.

Description

technical field [0001] The invention belongs to the technical field of evaporators, in particular to an evaporator heat exchange system applicable to heating in northern regions. Background technique [0002] For a long time, residential buildings in northern rural areas of my country mainly rely on direct coal-fired heating in winter, but the combustion process emits a large amount of harmful pollutants such as carbon dioxide, nitrogen oxides, sulfur dioxide, and dust, which has become one of the important causes of regional smog pollution. one. If we continue to use coal-fired heating methods, it is bound to further aggravate the deterioration of the atmospheric environment, and at the same time endanger the physical and mental health of the people. Therefore, clean heating in northern rural areas has become an urgent problem that needs to be solved. [0003] Studies have shown that PM2.5 in the air is mainly soil dust, coal burning, biomass burning, vehicle exhaust and g...

AI Technical Summary

Problems solved by technology

At present, the comprehensive energy efficiency of the coal-to-electricity heating system is generally low

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