| 平板式太阳能空气集热器流道改进的试验研究和数值模拟 |
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| 引用本文： | 丁刚,左然,张旭鹏,王坤.平板式太阳能空气集热器流道改进的试验研究和数值模拟[J].可再生能源,2011,29(2):12-15,21. |
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| 作者姓名： | 丁刚 左然 张旭鹏 王坤 |
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| 作者单位： | 1. 江苏大学能源与动力工程学院,江苏镇江,212013
2. 镇江市新梦溪能源有限公司,江苏,镇江,212013 |
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| 摘 要： | 对传统平板式太阳能空气集热器的流道进行了改进,把对角型进出口流道改为多进出口式流道。对改进的集热器的性能进行了试验测试。新的进出口流道消除了吸热板和空气换热不均的现象,出口温度提升明显。在相同条件下,集热器的瞬时效率增加约20%。用CFD方法对集热器内部的流场结构和传热进行的数值模拟对比表明,传统集热器内部存在流动死区,中心截面温度分布不均匀,吸热板上有局部的高温区域,改进后的集热器流场和温度场分布得较均匀。
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| 关 键 词： | 太阳能空气集热器 流道改进 瞬时效率 数值模拟 |
Experimental investigation and numerical simulation on improvement of flat-plate solar air collector flow channels |
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| DING Gang,ZUO Ran,ZHANG Xu-peng,WANG Kun.Experimental investigation and numerical simulation on improvement of flat-plate solar air collector flow channels[J].Renewable Energy,2011,29(2):12-15,21. |
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| Authors: | DING Gang ZUO Ran ZHANG Xu-peng WANG Kun |
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| Affiliation: | DING Gang1,ZUO Ran1,ZHANG Xu-peng1,WANG Kun2(1.School of Energy and Power,Jiangsu University,Zhenjiang 212013,China,2.New Energy Technology Co.,Ltd.Zhenjiang Mengxi,China) |
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| Abstract: | The flow channels of traditional flat-plate solar air collector were changed from diagonal inlet/outlet to multi-inlet/outlet.Experimental investigation on characteristics of solar air collectors after the improvement of flow channels was reported.The inlet and outlet channels of the conventional air collector were improved.The new flow channel eliminates the ununiformity of heat transfer between air and absorber plate,so there is a distinct temperature increasing at the outlet.The instantaneous efficiency ... |
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| Keywords: | solar air collector improvement of flow channels instantaneous efficiency numerical simulation |
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