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首页> 外文期刊>International journal of green energy >Efficiency Analysis of an Air Solar Flat Plate Collector in Different Convection Modes
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Efficiency Analysis of an Air Solar Flat Plate Collector in Different Convection Modes

机译：对流模式下空气太阳能平板集热器的效率分析

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摘要

Solar energy is an inexpensive source of energy for most of the countries. Use of this source of energy can be spread with the increase of solar systems efficiency. Solar energy collectors are the devices employed to gain useful heat energy from incident solar radiation. In the present investigation, an air solar flat plate collector was developed for research purposes. The collector absorber is developed in the form of a window shade for increasing contact area of air circulation. The experiments were performed in two convection modes and data were collected from 18-24 June 2011 throughout the day, in which atmospheric conditions were almost uniform. Thermal and efficiency analysis is carried out with the experiment data. Experimental results in natural and forced convection modes were evaluated and discussed. It was concluded that the collector efficiency in forced convection was lower, but the low air temperature difference between inlet and outlet decreased its heat loss. It is found that the average air speed in the forced convection was about 21% higher than the natural convection.
机译：对于大多数国家来说，太阳能是一种廉价的能源。随着太阳能系统效率的提高，这种能源的使用可以得到推广。太阳能收集器是用于从入射太阳辐射中获取有用热能的设备。在本研究中，开发了一种空气太阳能平板集热器用于研究目的。集热吸收器以窗帘的形式开发，用于增加空气循环的接触面积。实验以两种对流方式进行，并于2011年6月18日至24日全天收集了数据，当时大气条件几乎是一致的。利用实验数据进行热效率分析。对自然和强制对流模式下的实验结果进行了评估和讨论。可以得出结论，强制对流的集热效率较低，但是进气口和出口之间的低空气温差降低了其热损失。发现强制对流的平均风速比自然对流高约21％。

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