LOW POWER ABSORPTION REFRIGERATION SYSTEMS, WITH STORAGE, FOR AIR CONDITIONIG, DRIVEN BY RENEWABLE ENERGY SOURCES

Autor/autori: Florea CHIRIAC, Alexandru ȘERBAN, Liviu DRUGHEAN1, Anica ILIE, Ioan BOIAN, Ion DOBOȘI, Razvan CALOTĂ, Gabriel NĂSTASE

Abstract: This paper presents the results of research on ammonia-water absorption refrigeration systems for small and medium powers, operated with renewable energy resources [solar energy, geothermal] and bivalent, with renewable energy and conventional sources. It were built two absorption refrigeration machine, one driven only with renewable energy sources, a 5 kW cooling capacity, and another 17 kW cooling capacity, driven bivalent. The equipment of the systems are compact heat exchangers, with mini and micro channels. Refrigeration systems are equipped with thermal energy storage. Such systems are designed for comfort and commercial climate. Absorption heat pumps and chillers with ammonia-water can save considerably fuel by using renewable heat sources or waste heat available at temperature that is low enough. A reduction of the carbon dioxide emission together with a global warming potential is resulting. Some performance data will be indicated emphasizing the viability of this system based on micro/mini channels heat exchangers

Keywords: absorption ammonia/water, mini and micro channel, renewable energy

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