Method and device for separating heat energy and cold energy by vacuum sublimation and evaporation

Abstract

The invention provides a method for separating heat energy and cold energy by vacuum sublimation and evaporation. The method comprises the following steps: establishing a vacuum environment in an artificial environment, and allowing a part of a liquid to evaporate into steam, the remaining part of the liquid to solidify into a solid and a part of a solid to sublimate into steam; and separating thesteam and the solid, outputting the solid or the obtained solid-liquid mixture as a cold energy, outputting the steam as heat energy, and continuously carrying out the processes achieve separation ofcold energy and heat energy. A vacuum technology and the physical properties of water are used to realize the separation, storage and use of cold energy and heat energy and further storage and use, so the efficiency and the COP value of the system are greatly improved on the basis of existing refrigerating and heating technologies. The invention also provides a device used by the method.

Description

technical field [0001] The invention belongs to the technical field of refrigeration and heat pump, and provides a method for separating cold energy and heat energy by means of vacuum sublimation and evaporation. The invention also provides a device for use in said method. Background technique [0002] Refrigeration or heating technology refers to the use of artificial methods to cool or heat an object or object within a certain time and space, so that its temperature drops below the ambient temperature, or rises above the ambient temperature, that is, the use of refrigeration or heating technology. Thermal equipment adds energy to transfer heat from a low-temperature object to a high-temperature object, a unit operation that belongs to a thermodynamic process. The refrigeration or heating technology used in the prior art is to use the compressor to do work to increase the pressure of the medium in the refrigeration or heating equipment, and then decompress it, so as to abs...

AI Technical Summary

Problems solved by technology

The COP of household air conditioners with first-level energy consumption in my country is about 3.4. Although there are reports abroad that refrigeration units with COP>6 and <8 have been produced, but due to the high price of the equipment, the actual increase in efficiency is not large enough, resulting in low cost performance of the equipment.

[0004] The high energy consumption of the existing refrigeration and heating technology makes the centralized air conditioner a large power consumer, and greatly increases the load pressure on the national grid during the peak period in summer; while heating in winter due to the relatively high electricity costs, only coal can be burned, which increases air pollution

In order to control the atmosphere, the country promotes coal-to-gas conversion, but due to problems such as tight supply of natural gas resources and high prices, there are still certain difficulties in popularization

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