Direct evaporation type solar heating-cooling-power cogeneration system and control method thereof

Abstract

Disclosed is a direct evaporation type solar heating-cooling-power cogeneration system. The direct evaporation type solar heating-cooling-power cogeneration system comprises a direct evaporation type solar thermal collector, a compression and expansion dual-functional machine head, a permanent magnet electric power generation integrated motor, a condenser, an expansion valve, a working medium pump, a dual-effect lithium bromide absorption type refrigerating unit, a heat pump one-way valve, a power generation one-way valve and twelve stop valves, wherein the direct evaporation type solar thermal collector, the compression and expansion dual-functional machine head, the permanent magnet electric power generation integrated motor, the condenser, the expansion valve, the working medium pump, the dual-effect lithium bromide absorption type refrigerating unit, the heat pump one-way valve, the power generation one-way valve and the stop valves are connected through connecting pipelines. The connecting and disconnecting state of valve bodies is controlled so that solar heating, solar low-temperature power generation and solar cooling can be achieved. The solar heating technology, the low-temperature power generation technology and the refrigeration air conditioning technology are organically coupled together, combined with the building energy utilization requirement and matched with a building integration solar heating system, the requirement for cooling of the part of building spaces in summer is met, environmentally-friendly electric energy is generated at the transitional season to be used by buildings, the equipment utilization rate and the system operating efficiency are improved, and the direct evaporation type solar heating-cooling-power cogeneration system plays a more important role in building energy structures, and is an ideal path for solar large-scale, low-cost and high-yield application.

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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