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Resource-Efficient Technologies Pub Date : 2017-12-01 DOI:10.1016/j.reffit.2017.06.001

Ajinkya Sable

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引用次数: 24

摘要

为了增加太阳能热水器在印度的使用，一种由混凝土制成的低成本太阳能集热器在浦那进行了实验研究。由金属纤维组成的混凝土板放置在木箱中，浸入蛇形铜管，顶部装有玻璃。为了提高集热器的效率，在输水蛇形管上制造了一种增热技术(压窝)。在雨季、冬季和夏季对不同的流量进行了测试，以了解收集器全年的工作情况。测试结果显示，每天收集的平均水温为59°C - 69°C。此外，为了找出凹痕对出水温度的确切影响，同时设计、制造和测试了两个完全相同的混凝土板集热器，一个是凹痕管，另一个是光滑管。在2.5℃以下观察到酒窝的影响。并对印度混凝土集热器太阳能热水器的经济效益和环境效益进行了详细的分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Experimental and economic analysis of concrete absorber collector solar water heater with use of dimpled tube

To increase the usage of solar water heaters in India, a low-cost solar collector made of concrete is experimentally investigated in Pune. The concrete slab consisting metal fibers is placed in a wooden box, with immersed serpentine copper tube and provided with glazing on top. With an objective of improving the efficiency of the collector, a heat transfer augmentation technique (dimple) is fabricated on water carrying serpentine tube. Testing is carried out in rainy, winter and summer seasons for different water flow rates to understand the working of collector throughout the year. Testing results show that average water temperature collected per day is 59 °C–69 °C. Further, to find the exact effect of dimples on outlet water temperature, two completely identical concrete plate collectors–one with a dimpled tube and other with a smooth tube, are designed, fabricated and tested simultaneously. The effect of dimples is observed up to 2.5 °C. Also, a detailed economic analysis and environmental benefits of concrete collector solar water heater for India are investigated in this paper.

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来源期刊

Resource-Efficient Technologies

自引率

0.00%

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审稿时长

7 weeks