Heat pump based all-weather sea water desalination system

Abstract

The invention relates to a heat pump based all-weather sea water desalination system. The heat pump based all-weather sea water desalination system comprises a compressor, an evaporative condenser, a finned evaporator, a shall-and-coil evaporator, an electronic expansion valve, a flash intercooler, a turbocharger and a negative-pressure fan. If the temperature is relatively high in summer, and the temperature of the sea water is lower than the local temperature, the finned evaporator is used as an air source heat pump to heat to prepare the fresh water; if the temperature is relatively low in winter, and the temperature of the sea water is higher than the local temperature, the shell-and-coil evaporator is used as the sea water source heat pump to heat and manufacture the fresh water, and the boiling point of the sea water is reduced by utilizing the negative-pressure fan; the turbocharger is used for realizing one-stage compression of a refrigerant, and the compressor is used for realizing the two-stage compression of the refrigerator, so that the air suction volume of the compressor is increased; the flash condenser is utilized to raise the degree of the supercooling of the refrigerator in the major cycle, thus the benefit is provided for increasing the quality and the flow rate of the refrigerator in the major cycle, and as a result, the heating capacity is improved. By adopting the sea water desalination system, fresh water can be supplied for 24 hours a day at all seasons.

Description

technical field [0001] The invention relates to a heat pump all-weather seawater desalination system, in particular to a seawater desalination system using an air source heat pump in summer and a seawater source heat pump in winter, belonging to the technical field of seawater desalination. Background technique [0002] At present, the air source heat pump heating seawater desalination technology, under the ultra-low temperature outdoor conditions in winter, the heating capacity attenuation is very serious, and even cannot start and run normally, and the seawater desalination efficiency is extremely low. , because the seawater temperature is lower than the local air temperature in summer, the seawater desalination efficiency of seawater source heat pump heating is lower than that of air source heat pump heating seawater desalination in summer. Now the world advocates energy saving and carbon reduction. Due to global warming, abnormal weather often occurs, so it needs to be de...

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Problems solved by technology

[0002] At present, the air source heat pump heating seawater desalination technology, under the ultra-low temperature outdoor conditions in winter, the heating capacity attenuation is very serious, and even cannot start and run normally, and the seawater desalination efficiency is extremely low. , because the seawater temperature is lower than the local air temperature in summer, the seawater desalination efficiency of seawater source heat pump heating is lower than that of air source heat pump heating seawater desalination in summer. Now the world advocates energy saving and carbon reduction. Due to global warming, abnormal weather often occurs, so it needs to be developed A heat pump all-weather seawater desalination system with low equipment investment, reduced energy consumption, less environmental pollution, improved energy efficiency ratio of the system, and reduced operating costs

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