Heat of phase change efficient utilization device of water

Abstract

The invention relates to a heat of phase change efficient utilization device of water. An airtight evacuated housing and a heat exchanger form an evaporator; the interior part of the evacuated housing is provided with the heat exchanger; a vacuumizing port on the wall of the evaporator is communicated with the suction inlet of a vapor injection compressor through a pipeline; the air inlet of the vapor injection compressor is connected with the working evaporation of an evaporation furnace; the mixed gas exhaust port of the vapor injection compressor is communicated with the inlet of the heat exchanger through an enclosed booster pump; and the outlet of the heat exchanger is provided with a condensed water collecting port and a vacuum pump. The device provided by the invention inventively utilizes the great phase change heat accumulation and heat discharging capabilities of water, the properties of less evaporation consumption and great exhaust capacity at a working data section of theevaporation compressor; and the functions of large air rate and pressure rise of an enclosed air pump are combined, the energy source consumption is reduced greatly, and the double technical purposesof the accomplishment of vacuum evaporation and heat exchange of the heat pump are realized.

Description

technical field [0001] The invention relates to the application of heat pump equipment in the field of evaporation, and is a high-efficiency utilization device of phase change heat of water. Background technique [0002] The drying of materials is to heat the moisture contained in solid granular materials such as grains, coal ore, etc. into a gaseous state, which is a kind of evaporation. Since the gasification of water needs to absorb a large amount of heat, evaporation is an industry with high energy consumption. At present, the commonly used drying method is to use the hot air heating method. After the air is heated by combustion or electric heating, the air is blown over the material to vaporize the internal moisture to achieve drying and dehydration; however, the thermal efficiency of this heat exchange method is very low, usually only 20 %~40%. Moreover, because the temperature of the evaporated water vapor is similar to that of the material to be evaporated, accordin...

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Problems solved by technology

[0004] Aiming at the shortcomings of low thermal energy utilization rate in the above-mentioned existing evaporation process, and the inability to effectively utilize water vapor with large air volume, small temperature difference, and low pressure, the applicant provides a water phase change heat efficient utilization device with reasonable structure, thereby It can recycle water vapor with small temperature difference, low pressure and large volume, make full use of the liquefaction heat release of water, and realize the purpose of high-efficiency and low-cost evaporation production

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