Liquid-differential kinetic low-heat source heat pump

Abstract

The invention discloses a liquid-differential kinetic low-heat source heat pump which comprises a flashing gravity feed liquid heat pump equipment structure and a reverse Carnot cycle flashing gravity liquid system. The liquid-difference power low-heat source heat pump is characterized in that by adopting the technological processes of a tube pass working medium gravity liquid evaporator, tube pass flowing gravity cycle working medium evaporated liquid and a shell pass flowing cycling medium, matching of open type heat source tower heat pump system equipment is improved, the heat transfer efficiency of a heat exchanger is improved, and the frost resistance is enhanced; the liquid level line of a flashing feed liquid and back steam separator is higher than that of the tube pass working medium gravity liquid evaporator, and a certain gravity difference delta H is formed to overcome the tube resistance and ensure the evaporating performance of gravity feed liquid; the compressor module is configured according to the heat source working condition with the heat source temperature of minus 23 DEG C in winter, and therefore heat supplying under the extremely low heat source working condition is guaranteed; compared with a conventional ground source heat pump unit of which the compressor is configured according to the heat source working condition of 15 DEG C, the heat supplying capacity can be increased by at least more than one time by configuring the compressor at the heat source temperature of minus 23 DEG C.

Description

technical field [0001] The liquid differential power low heat source heat pump involved in the present invention involves two major fields of new energy and energy saving technology, environmental protection and resources in my country. Background technique [0002] With the improvement of people's living standards, people's requirements for the built environment are also getting higher and higher. Various refrigeration, air-conditioning, ventilation and heating technologies are increasingly being used in buildings. Under the current situation of energy saving and low carbon, reducing smog weather, creating ecological cities, green ecological communities, and green low-carbon buildings, heat source towers are used as heat pump cooling The low-carbon, environment-friendly and energy-saving heating method from (heat) sources plays an important role in the development of people's production and life. [0003] However, in the long-term operation project investigation, it was fo...

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Problems solved by technology

[0003] However, in the investigation of long-term operation projects, it was found that the open heat source tower can use the external cheap frozen salt solution to form a liquid film directly on the surface of the packing to absorb the humid and cold heat source from the haze air in winter in the south. The moisture content in the circulating air is large, The relative latent heat resources are rich in energy. The frozen solution absorbs the condensed water in the air while gaining energy. The phenomenon of wet dilution of the frozen solution is serious, causing the freezing point of the solution concentration to rise.

Once the control is not in place, it is easy to cause frost heaving and damage to the evaporator tube side heat exchange tube of the heat pump flooded unit

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