Electric energy replacement system and method of combined supply of cooling heating and power based on high pressure liquid

Abstract

The invention provides an electric energy replacement system and method of combined supply of cooling heating and power based on high pressure liquid. The electric energy replacement system comprisesa subsystem for preparing liquid air, a power generation subsystem utilizing the liquid air, a refrigeration subsystem utilizing the heat energy and a heating subsystem. The subsystem for preparing the liquid air includes air compressors, air circulation compressors and a liquid air storage, and the air compressors and the air circulation compressors are separately provided with interstage heat exchangers. The electric energy replacement system achieves the required high pressure only through two compressions and saves the process of cryogenic pump pressurization, the energy consumed in the process of cryogenic pump pressurization and the equipment machining and maintenance costs; according to the technical scheme, the heat transfer medium used in the cooling and heating processes of air compression, storage and expansion realizes the recycling of energy, convenience and speediness are achieved, and energy and manpower are saved; combined supply of cooling heating and power is realized, and the waste of energy and resources is greatly avoided.

Description

technical field [0001] The invention relates to an electric energy replacement system, in particular to an electric energy replacement system and method based on high-pressure liquid combined cooling, heating and power supply. Background technique [0002] From the second industrial revolution to the electrical age, human beings have experienced nearly a century. With the gradual enrichment of electrical equipment, from industrial production to daily life, while enjoying the convenience brought by electric energy, human beings have also produced a kind of The irreplaceable dependence on electric energy. Therefore, the importance of power generation technology to human civilization is self-evident. Most of the electric energy is still thermal power generation. The waste generated during the combustion process of thermal power generation will inevitably have an impact on the environment. The contradiction between the limitation of such fuels and the growing demand has become ...

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Problems solved by technology

Using high-pressure air expansion to provide energy for power generation equipment is one of the methods to replace thermal power generation. However, the current compression and storage technology of air needs to be boosted three times through air compressors, circulating compressors, and cryogenic pumps. This process first The high-pressure liquid air pressurized by the air compressor and the circulating compressor is stored in the high-pressure liquid storage tank, and then sent to the evaporator after being pressurized by the cryogenic pump to about 110-120bar. This method expands the high-pressure air to generate electricity The amount of energy wasted in some of the intermediate steps in the process is quite staggering

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