Solar combined cooling heating and power generation system based on organic rankine cycle and lithium bromide refrigerating

Abstract

The invention relates to a solar cogeneration system based on organic rankine cycle and lithium bromide refrigeration, including a solar heat collection system, an organic rankine cycle power generation system, a lithium bromide absorption refrigerator, terminal heating, and a domestic heat system. The organic Rankine cycle power generation system includes an evaporator A, a steam turbine, a generator, a condenser A and a working medium pump, the evaporator A is respectively connected with a heat accumulator and a reheater, and the evaporator A is respectively connected with a The connection of the working medium pump and the steam turbine constitutes an organic Rankine cycle power generation system using solar heat collection heat source; and it is connected with the lithium bromide absorption refrigerator and the terminal heating and domestic heating system to form an overall cogeneration system of cooling, heating and power. Beneficial effects: the present invention combines organic Rankine cycle and lithium bromide refrigeration by using solar medium and low temperature energy, which not only achieves the purpose of temperature matching, cascade utilization, and heat refrigeration, but also realizes the functions of power supply, winter heating, and summer cooling. Cogeneration of cooling, heating and power.

Description

technical field [0001] The invention belongs to the field of combined cooling, heating and power generation of renewable energy, in particular to a solar combined cooling, heating and power generation system based on organic Rankine cycle and lithium bromide refrigeration. Background technique [0002] Solar energy is a clean and renewable energy. Solar thermal power generation has great advantages in many aspects such as economy, technology and environmental protection. However, solar energy has strong dispersion and low energy flux density, which is only suitable for obtaining medium and low temperature heat energy, which limits the application range of solar energy. [0003] The organic Rankine cycle is a Rankine cycle with organic matter as the working medium, which can effectively recover low-grade heat energy, and the sound velocity of the organic working medium is lower than that of water vapor at the same temperature, and it can still generate relatively high energy ...

AI Technical Summary

Problems solved by technology

Most of the current combined cooling, heating and power systems use gas turbines, steam Rankine cycle and absorption refrigeration for combined cooling, heating and power supply. Although the combustion of fuel can obtain high-grade energy, the exhaust heat temperature of the system is still high. can't get the most out of it

At the same time, the burning of fossil fuels has also caused a certain degree of pollution to the environment.

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