A power-cooling-air combined supply system driven by a medium and low temperature heat source

Abstract

The invention discloses a power-cooling-air co-supply system driven by a medium-low temperature heat source, which includes a medium-low temperature heat source circulation system, an LNG cold energy utilization circulation system, a Karina circulation system, an organic Rankine circulation system, and an external injection refrigeration circulation system And internal injection refrigeration cycle system; Karina cycle system is coupled with medium and low temperature heat source cycle system through boiler and superheater; Organic Rankine cycle system is coupled with medium and low temperature heat source cycle system through ORC preheater, organic Rankine cycle system The ORC evaporator is coupled with the Kalina cycle system; the jet flow of the ejector of the internal jet refrigeration cycle system is medium-high pressure ammonia gas drawn from a certain position in the middle of the turbine in the Kalina cycle system, and the jet flow is the first A two-phase flow at the outlet of the evaporator; the jet flow of the ejector of the external jet refrigeration cycle system is ammonia water at the outlet of the condenser in the Karina cycle system, and the jet flow is the two-phase mixture at the outlet of the evaporator.

Description

technical field [0001] The invention belongs to the field of combined power, cold and air supply, and in particular relates to a combined power, cold and air supply system driven by a medium-low temperature heat source. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] With the progress of society, the consumption of non-renewable energy such as coal, oil, and natural gas is also increasing year by year, causing serious damage to the environment. In this case, it is particularly important to use heat source energy in stages to maximize energy utilization. It is one of the important ways to solve the current energy crisis and relieve environmental pressure. Medium and low temperature heat sources are relatively common in our lives and are one of the important components of heat sources, including solar energy, various waste heat from factori...

AI Technical Summary

Problems solved by technology

The heat sink of the Kalina circulation system mostly uses cooling water or LNG (liquefied natural gas) after heating treatment. When cooling water is used, due to the high temperature, the required flow rate is relatively large, resulting in high power consumption of the water pump; when using LNG , usually needs to be heated by seawater or industrial waste heat, and then used as the heat sink of the Karina cycle system. This treatment method, on the one hand, causes problems such as energy waste, marine environmental pollution, and insufficient supply and demand of heat sources in coastal cities. On the other hand, LNG A large amount of cold energy is released during vaporization, and this part of cold energy is often not effectively utilized

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