Energy saving potential of a counter-flow regenerative evaporative cooler for various climates of China: Experiment-based evaluation
Energy saving potential of a counter-flow regenerative evaporative cooler for various climates of China: Experiment-based evaluation
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DOI：
10.1016/j.enbuild.2017.04.012
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发表时间：
2017-08-01
影响因子：
6.7
通讯作者：
Chen, Hongbing
中科院分区：
文献类型：
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作者：
Duan, Zhiyin;Zhao, Xudong;Chen, Hongbing
近年来，再生式蒸发冷却器（REC）受到越来越多的关注，它可以将供应空气的温度降低到进气的湿球以下并接近其露点。本文设计、制作了一台逆流式REC，并进行了实验室测试。REC的核心热质交换器使用由高芯吸蒸发（测量可用材料的芯吸性）和防水铝材料组成的堆叠片材制造。与传统的间接蒸发冷却器相比，开发的REC系统具有更高的冷却性能。然而，在中国建筑中使用REC的决定取决于对净节能与资本支出的专门评估。这种评估需要REC针对各种气候提供的冷却能力可用性的每小时数据。本文采用实验为基础的方法来估计的制冷能力和节能提供的建议REC为中国的各种气候。通过使用实验结果和区域逐时气象数据，REC的节能潜力进行了分析，相对于一个同等大小的机械空调单独。结果表明，对于所有选定的地区，REC每年可以减少53-100%的冷负荷和13-58%的电能消耗。(C)2017由Elsevier B. V.出版
Recently there has been growing interest in regenerative evaporative coolers (REC), which can reduce the temperature of the supply air to below the wet-bulb of intake air and approach its dew-point. In this paper, we designed, fabricated and experimentally tested a counter-flow REC in laboratory. The REC's core heat and mass exchanger was fabricated using stacked sheets composed of high wicking evaporation (wickability of available materials was measured) and waterproof aluminium materials. The developed REC system has a much higher cooling performance compared to conventional indirect evaporative cooler. However, the decision to use the REC for China buildings depends on a dedicated evaluation of the net energy saved against the capital expended. Such an evaluation requires the hourly based data on the availability of cooling capacity provided by the REC for various climates. The paper used an experiment-based method to estimate the cooling capacity and energy savings provided by the proposed REC for China's various climates. By using the experimental results and regional hourly based weather data, the energy saving potential of the REC against an equivalent-sized mechanical air conditioner alone was analysed. The results indicate that, for all selected regions, the REC could reduce 53-100% of cooling load and 13-58% of electrical energy consumption annually. (C) 2017 Published by Elsevier B.V.