Analytical and experimental studies on the thermal performance of cross-corrugated and flat-plate solar air heaters
Analytical and experimental studies on the thermal performance of cross-corrugated and flat-plate solar air heaters
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交叉波纹平板太阳能空气加热器热性能分析与实验研究
DOI：
10.1016/j.apenergy.2006.02.005
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发表时间：
2007-04
期刊：
影响因子：
11.2
通讯作者：
夏朝凤
中科院分区：
文献类型：
--
作者：
高文峰;林文贤;刘滔;夏朝凤
交叉波纹加热器由波状吸热板和波状底板组成，波状吸热板和波状底板交错布置形成气流通道。考虑两种类型的这些加热器。对于1型加热器，吸收板的波浪形状是沿着流动方向，底板的波浪形状垂直于流动方向，而对于2型加热器，底板的波浪形状是沿着流动方向，吸收板的波浪形状垂直于流动方向。采用交叉波纹吸热板和底板的目的是增强气流通道内的湍流和传热速率，这对提高太阳能空气加热器的效率至关重要。为了量化交叉波纹吸收板和底板可实现的改进，还考虑了具有平坦吸收板和平坦底板的平板太阳能空气加热器。对这三种太阳能空气集热器在不同结构和工况下的热性能进行了分析、测试和比较。所有的分析和实验结果表明，虽然类型2加热器的热性能略上级类型1加热器，这两个交叉波纹太阳能空气加热器具有更上级的热性能的平板之一。还发现，在所考虑的所有加热器的吸收板上使用选定的涂层可以显著地增强加热器的热性能，而在底板或/和玻璃盖上的这种选定的涂层对加热器的热性能没有如此显著的影响。
The cross-corrugated heaters consist of a wavelike absorbing plate and a wavelike bottom plate, which are crosswise positioned to form the air flow channel. Two types of these heaters are considered. For the type 1 heater, the wavelike shape of the absorbing plate is along the flow direction and that of the bottom plate is perpendicular to the flow direction, while for the type 2 heater it is the wavelike shape of the bottom plate that is along the flow direction and that of the absorbing plate is perpendicular to the flow direction. The aims of the use of the cross-corrugated absorbing plate and bottom plate is to enhance the turbulence and the heat-transfer rate inside the air flow channel, which are crucial to the improvement of efficiencies of solar air-heaters. To quantify the achievable improvements with the cross-corrugated absorbing and bottom plates, flat-plate solar air-heaters which have both a flat absorbing plate and a flat bottom plate, are also considered. The thermal performance of these three types of solar air-heaters are analyzed, measured and compared under several configurations and operating conditions. All the analytical and experimental results show that, although the thermal performance of the type 2 heater is just slightly superior to that of the type 1 heater, both of these cross-corrugated solar air-heaters have a much superior thermal performances to that of the flat-plate one. It is also found that the use of selected coatings on the absorbing plates of all the heaters considered can substantially enhance the thermal performances of the heaters, whereas such a selected coating on the bottom plates or/and the glass covers does not have such a significant effect on the thermal performances of the heaters.
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影响因子：
--
作者：
L. Goldstein;E. Sparrow
通讯作者：
L. Goldstein;E. Sparrow
DOI：
10.1016/s0017-9310(97)00168-3
发表时间：
1998-03
影响因子：
5.2
作者：
J. Stasiek
通讯作者：
J. Stasiek
DOI：
10.1007/978-1-4419-1564-1_7
发表时间：
2010
期刊：
--
影响因子：
--
作者：
Herbert Oertel
通讯作者：
Herbert Oertel
DOI：
10.1115/1.2847946
发表时间：
1996-02
影响因子：
2.3
作者：
S. Noorshahi;C. A. Hall;E. Glakpe
通讯作者：
S. Noorshahi;C. A. Hall;E. Glakpe
DOI：
10.1115/1.3450667
发表时间：
1977-05
期刊：
--
影响因子：
--
作者：
L. Goldstein;E. Sparrow
通讯作者：
L. Goldstein;E. Sparrow