Direct evaporative solar heat, power and cooling cogeneration system and its control method

Abstract

The invention discloses a direct evaporative solar heat, power and cooling cogeneration system, which comprises a direct evaporative solar heat collector connected through a connecting pipeline, a compression expansion dual-function machine head, a permanent magnet electric power generation integrated motor, a condenser, an expansion valve, working fluid pump, double-effect lithium bromide absorption refrigeration unit, heat pump check valve, power generation check valve and 12 stop valves; by controlling the on-off state of the valve body, solar heating, solar low-temperature power generation and solar cooling can be realized. Organically couple solar heating, low-temperature power generation, and refrigeration and air-conditioning technologies, combine building energy demand, and match building-integrated solar heating systems to solve the cooling needs of some building spaces in summer, and generate green electricity for buildings in transitional seasons The use of solar energy improves the utilization rate of equipment and the efficiency of system operation, and plays a more important role in the building energy structure. It is an ideal way for large-scale, low-cost, and high-yield applications of solar energy.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, and in particular relates to a direct evaporative solar heat, power and cooling cogeneration system. Background technique [0002] With the increasing shortage of conventional energy and the continuous deterioration of environmental quality, solar energy, the main force of renewable energy, plays an increasingly important role in global energy supply. my country has a vast territory and is one of the countries rich in solar energy resources. The total annual radiation in two-thirds of the regions is greater than 5020MJ / m 2 , the annual sunshine hours are above 2200h, which has the potential of effective utilization and development. [0003] Solar thermal utilization is a basic form of solar energy utilization. According to different functions, it can be divided into solar hot water system, solar heating, solar refrigeration and air conditioning, solar thermal power generation, ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of heat waste and equipment idleness in the non-heating period caused by the large-scale application of solar heating systems in the prior art, the present invention organically couples solar heating, low-temperature power generation and refrigeration and air conditioning technologies to form a comprehensive solar energy utilization system. Achieve the best match between solar energy utilization and seasonal changes, supply energy on demand throughout the year, that is, use a set of solar energy utilization devices to achieve winter heating, transitional season power generation and summer cooling

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