Solar adsorption and absorption cascade refrigerating and heating system

Abstract

The invention provides a solar adsorption and absorption cascade refrigerating and heating system. In daytime, according to the system, a photothermal and opto-cooling solar converting device is usedfor collecting solar energy to provide heat for a generator; meanwhile, adsorbate and an adsorbing agent in the device are desorbed; at night, the adsorbing agent in the device absorbs the adsorbate,the adsorbing heat generated in the adsorbing process can provide heat for night running of the generator; and meanwhile, the cold energy is generated in the evaporating process of adsorbate liquid, and the cold energy can cool a condenser and an absorber. The photothermal and opto-cooling solar converting device comprises a shell, a closed cavity, a condensing lens, an inner pipeline, an adsorbing agent, a liquid collecting cavity, a wall surface and other elements. A closed liquid collecting cavity is formed between the wall surface and the condensing lens; the inner pipeline penetrates thecenter of the liquid collecting cavity; the closed cavity is formed between the wall surface and the shell, and is communicated with the outside through a pipeline; and the adsorbing agent is fixed tothe outer surface of the inner pipe. By means of the device, the two-stage utilizing of solar refrigerating and heating is achieved, night running of an absorbing type refrigerating system in a modewithout an assisting heat source is achieved, and the solar utilizing rate is increased.

Description

technical field [0001] The invention relates to the field of solar refrigeration and heating, and more specifically relates to a solar energy absorption and absorption cascade refrigeration and heating system. Background technique [0002] There are two main forms of solar refrigeration systems: absorption refrigeration and adsorption refrigeration. Due to the lack of solar heat at night in the absorption refrigeration system, auxiliary heat source heating is often required, which reduces the efficiency of the refrigeration system. In the adsorption refrigeration system, due to the limitation of its principle, it is often not possible to continuously circulate refrigeration, and it can only provide cooling capacity at night, which limits its application. In order to solve this problem, the present invention combines absorption refrigeration and adsorption refrigeration, and proposes a solar energy absorption, absorption cascade refrigeration and heating system, the core com...

AI Technical Summary

Problems solved by technology

In the adsorption refrigeration system, due to the limitation of its principle, it is often not possible to continuously circulate refrigeration, and it can only provide cooling capacity at night, which limits its application occasions

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