Combined cooling and power system and refrigeration, power generation and combined cooling and power method based on combined cooling and power system

Abstract

The invention relates to a combined cooling and power system and a refrigeration, power generation and combined cooling and power method based on the combined cooling and power system. According to the combined cooling and power system and the refrigeration, power generation and combined cooling and power method based on the combined cooling and power system, a low-grade heat source which cannot be effectively recycled in the industrial production process is used as a heat source, and power generation is achieved by heating non-azeotropic point mixing working media; in a refrigerating system, water is used as an absorbing agent, ammonia is used as a refrigerant, the refrigerant is absorbed by the absorbing agent under the low-temperature and low-pressure condition by means of the characteristic that the refrigerant has different solubilities in a solution at different temperatures, the refrigerant is evaporated from the solution under the high-temperature and high-pressure condition, and thus the purpose of circulating refrigeration is achieved. By adjusting the electric energy production and the refrigeration output, the adaptability of the combined cooling and power system to variable working conditions is improved, various actual production requirements are met, and the combined cooling and power system can be in a power generation mode, a refrigeration mode, a combined cooling and power mode and a combined cooling and power variable-working-condition mode. Adjustment of the electric energy production and the refrigeration output under different working condition requirements is achieved.

Description

【Technical field】 [0001] The invention belongs to the fields of recycling of low-grade heat sources, combined cooling and power supply under variable working conditions, and power engineering, and relates to a combined cooling and power supply system based on recycling of low-grade heat sources and methods for refrigeration, power generation and combined cooling and power supply based on the system. 【Background technique】 [0002] Domestically, the recovery of low-grade heat sources widely adopts water vapor power circulation system. This system uses water as the working fluid. Since the temperature of water is constant during the process of evaporating and absorbing heat, the heat release temperature curve of the heat source does not match well with the evaporation and heat absorption curve of the working fluid. , leading to relatively large irreversible losses in the heat exchange process, and low recovery efficiency for low-grade heat sources. [0003] Some domestic syste...

AI Technical Summary

Problems solved by technology

[0004] Although most of the currently prevailing combined cooling and power systems can convert heat energy into electric energy and cold energy for use, it is difficult to achieve satisfactory results for varying working conditions according to different needs. On the one hand, enhance the adaptability of the combined cooling and power supply system to changing working conditions, and convert heat energy into electric energy and cold energy of the required scale to meet the various energy needs of users

[0005] In the process of industrial production, such as the production of industrial products such as cement, sulfuric acid, and glass, a large amount of waste heat resources are discharged into the environment in various forms, causing serious energy waste and environmental pollution.

Images