Liquid nitrogen vaporization cold recycling device

Abstract

The invention relates to a liquid nitrogen vaporization cold recycling device, which comprises a liquid nitrogen storage tank, wherein the liquid nitrogen storage tank is connected with a vaporizer; a protective cover is arranged at the periphery of the vaporizer; a collecting tank is arranged at the bottom of the protective cover and is connected with a water inlet of a water storage tank through a pipeline; a temperature regulating device is arranged inside the water storage tank; a water outlet of the water storage tank is connected with a first water inlet of a heat exchanger through the pipeline and a water pump; a first water outlet of the heat exchanger is connected with a nozzle; the nozzle is arranged above the vaporizer; a second water inlet of the heat exchanger is connected with a water return pipeline for technological cooling water; and a second water outlet of the heat exchanger is connected with a water inlet pipeline for the technological cooling water. The invention provides a liquid nitrogen vaporization cold recycling device capable of optimizing the vaporization effect of the liquid nitrogen and obtaining the technological cooling water without an industrial water chiller.

Description

technical field [0001] The invention relates to a device for reusing the cooling capacity of liquid nitrogen vaporization. Background technique [0002] At present, the production of solar photovoltaic cells needs to use a large amount of nitrogen and process cooling water with a temperature of 15-25 degrees Celsius. [0003] The way to obtain nitrogen is: the liquid nitrogen in the liquid nitrogen storage tank is vaporized by a vaporizer to become nitrogen. The disadvantage of this method is that when liquid nitrogen is converted into nitrogen, it needs to absorb heat and generate cold energy on the surface of the vaporizer, so the vaporization effect is greatly affected by the external temperature, especially in winter, the surface of the vaporizer will be severely frozen , thus affecting the use. [0004] Process cooling water is mainly used to cool production equipment. The structure of the currently used process cooling water preparation device includes an industrial...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that when liquid nitrogen is converted into nitrogen, it needs to absorb heat and generate cold energy on the surface of the vaporizer, so the vaporization effect is greatly affected by the external temperature, especially in winter, the surface of the vaporizer will be severely frozen , thus affecting the use of

Its working principle is: after the industrial chiller cools the water to the specified temperature, the heat exchange is realized through the heat exchanger, thereby cooling the return water of the process cooling water to the specified temperature. In the long run, the energy consumption of the industrial chiller is huge

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