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首页> 外文期刊>International journal of green energy >An investigation of double-glass-covered trapezoidal salt-gradient solar pond coupled with reflector
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An investigation of double-glass-covered trapezoidal salt-gradient solar pond coupled with reflector

机译：带反射器的双层玻璃梯形盐梯度太阳池研究

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摘要

In the present study, a trapezoidal salt-gradient solar pond (TSGSP) has been investigated experimentally. The top surface of solar pond has been covered with double-glass cover in order to reduce the evaporative and convective losses from the top. This results in increase of temperature even in the top zone of the solar pond and leads to more volume utilization for heat storage in the pond. A reflector made of aluminium sheet has been used to enhance the solar intensity on the solar pond during sunny hours. A procedure, to determine optimum tilt angle of reflector in order to utilize maximum amount of solar energy at noon, has been proposed. The use of reflector enhanced the average solar intensity on the top surface of solar pond by 22%. The maximum average temperature of trapezoidal solar pond with glass cover and reflector has been observed to be 70.5 degrees C. The thermal efficiencies of LCZ, NCZ and UCZ for the trapezoidal solar pond with double-glass cover and reflector have been estimated to be 32.73%, 23.22% and 5.30%, respectively. In addition to experimental investigation, the sunny area ratio of TSGSP has been theoretically computed and compared with the cuboid solar pond having same top surface area and depth in order to see the effect of pond shape on sunny area ratio. The average yearly sunny area ratio of trapezoidal solar pond has been determined to be 11% higher than that of cuboid one.
机译：在本研究中，已经对梯形盐梯度太阳池（TSGSP）进行了实验研究。为了减少顶部的蒸发和对流损失，太阳能水池的顶部表面覆盖有双层玻璃罩。即使在太阳能池的顶部区域，这也会导致温度升高，并导致池中蓄热的体积利用率更高。由铝板制成的反射器已被用于增强晴天期间太阳池上的太阳光强度。已经提出了确定反射器的最佳倾斜角以便在中午利用最大量的太阳能的过程。使用反射镜可将太阳能池顶面上的平均太阳强度提高22％。观察到带有玻璃盖和反射镜的梯形太阳池的最高平均温度为70.5摄氏度。带有双层玻璃盖和反射镜的梯形太阳池的LCZ，NCZ和UCZ的热效率估计为32.73％ ，分别为23.22％和5.30％。除实验研究外，还从理论上计算了TSGSP的日照面积比，并将其与具有相同顶表面积和深度的长方体太阳能池进行比较，以了解池形对日照面积比的影响。梯形太阳池的年平均日照面积比确定为比长方体高11％。

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