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首页> 外文期刊>The International Journal of Environmental Studies >Energy efficiency and economic feasibility of an absorption air-conditioning system using wet, dry and hybrid heat rejection methods
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Energy efficiency and economic feasibility of an absorption air-conditioning system using wet, dry and hybrid heat rejection methods

机译：使用湿式，干式和混合散热方法的吸收式空调系统的能源效率和经济可行性

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摘要

In tropical and sub-tropical regions, air-conditioning systems account for the greatest electricity consumption and high water use. Solar-driven absorption cooling systems can conveniently reduce electricity consumption at need. The performance of this cooling system depends on the system's heat rejection. A simulation was performed for a 15 kW single effect ammonia-water absorption cooling system driven by low temperature thermal energy and with three different heat rejection methods (wet cooling, dry cooling, and hybrid cooling). This hybrid cooling system uses wet cooling on the absorber and dry cooling on the condenser.The system performance and economics of the chiller with these cooling methods were evaluated.The analysis showed that a wet cooling system has a higher system performance and water consumption compared to a dry cooling system, which has a high primary energy consumption with no water usage. In hot weather conditions and where there is scarcity of water, hybrid cooling can consume on average 41 % less electrical energy than dry cooling and 49% less water than wet cooling and the payback period compared to a wet cooling system can be less than three years.
机译：在热带和亚热带地区，空调系统占最大的电力消耗和高用水量。太阳能驱动的吸收式冷却系统可以方便地减少所需的电力消耗。该冷却系统的性能取决于系统的散热性能。对由低温热能驱动并采用三种不同的排热方法（湿式冷却，干式冷却和混合冷却）的15 kW单效氨水吸收式冷却系统进行了仿真。该混合冷却系统采用吸收器上的湿式冷却和冷凝器上的干式冷却，评估了使用这些冷却方法的冷却器的系统性能和经济性，分析表明，与之相比，湿式冷却系统具有更高的系统性能和耗水量干式冷却系统，它的主要能源消耗很高，无用水。在炎热的天气条件下和缺水的地方，混合冷却比干式冷却平均可减少41％的电能，比湿式冷却少49％的水，与湿式冷却系统相比，投资回收期可少于三年。

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