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首页> 外文期刊>Journal of The institution of engineers (India), Series C >Performance Analysis and Parametric Study of a Natural Convection Solar Air Heater With In-built Oil Storage
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Performance Analysis and Parametric Study of a Natural Convection Solar Air Heater With In-built Oil Storage

机译：内置储油式自然对流太阳能空气加热器的性能分析及参数研究

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This paper presents the thermal performance of the proposed double flow natural convection solar air heater with in-built liquid (oil) sensible heat storage. Unused engine oil was used as thermal energy storage medium due to its good heat retaining capacity even at high temperatures without evaporation. The performance evaluation was carried out for a day of the month March for the climatic conditions of Nagpur (India). A self reliant computational model was developed using computational tool as C++. The program developed was self reliant and compute the performance parameters for any day of the year and would be used for major cities in India. The effect of change in storage oil quantity and the inclination (tilt angle) on the overall efficiency of the solar air heater was studied. The performance was tested initially at different storage oil quantities as 25, 50, 75 and 100 l for a plate spacing of 0.04 m with an inclination of 36°. It has been found that the solar air heater gives the best performance at a storage oil quantity of 50 l. The performance of the proposed solar air heater is further tested for various combinations of storage oil quantity (50, 75 and 100 l) and the inclination (0°, 15°, 30°, 45°, 60°, 75°, 90°). It has been found that the proposed solar air heater with in-built oil storage shows its best performance for the combination of 50 l storage oil quantity and 60° inclination. Finally the results of the parametric study was also presented in the form of graphs carried out for a fixed storage oil quantity of 25 l, plate spacing of 0.03 m and at an inclination of 36° to study the behaviour of various heat transfer and fluid flow parameters of the solar air heater.
机译：本文介绍了带有内置液体（油）显热存储的拟议双流自然对流太阳能空气加热器的热性能。未使用的机油由于具有良好的保温能力，即使在高温下也不会蒸发，因此被用作热能存储介质。在3月的一天中，针对那格浦尔（印度）的气候条件进行了性能评估。使用计算工具作为C ++开发了自力更生的计算模型。开发的程序是自力更生的，并可以计算一年中任何一天的性能参数，并将用于印度的主要城市。研究了储油量和倾斜度（倾斜角）的变化对太阳能空气加热器整体效率的影响。最初在不同的储油量（25、50、75和100升）下以0.04 m的板间距（倾角为36°）对性能进行了测试。已经发现，在储油量为50 l时，太阳能空气加热器具有最佳性能。对于储油量（50、75和100 l）和倾斜度（0°，15°，30°，45°，60°，75°，90°）的各种组合，进一步测试了所提出的太阳能空气加热器的性能。 ）。已经发现，所建议的带有内置储油装置的太阳能空气加热器在50l储油量和60°倾角的组合中显示出最佳性能。最后，还以图表形式显示了参数研究的结果，这些图表是针对固定储油量为25 l，板间距为0.03 m，倾角为36°进行的，以研究各种传热和流体流动的行为。太阳能空气加热器的参数。

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