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首页> 外文期刊>American journal of applied sciences >Analytical and Experimental Studies on the Thermal Efficiency of the Double-Pass Solar Air Collector with Finned Absorber
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Analytical and Experimental Studies on the Thermal Efficiency of the Double-Pass Solar Air Collector with Finned Absorber

机译：带翅片吸收器的双程太阳能集热器热效率的分析和实验研究

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摘要

Problem statement: The design of suitable air collectors is one of the most important factors controlling the economics of the solar drying. Air type collectors have two inherent disadvantages: Low thermal capacity of air and low absorber to air heat transfer coefficient. Different modifications are suggested and applied to improve the heat transfer coefficient between the absorber plate and air. These modifications include the use of extended heat transfer area, such as finned absorber. Approach: The efficiency of the solar collector has been examined by changing the solar radiation and the mass flow rate. An analytical and experimental study to investigate the effect of mass flow rate and solar radiation on thermal efficiency were conducted. The theoretical solution procedure of the energy equations uses a matrix inversion method and making some algebraic rearrangements. Results: The average error on calculating thermal efficiency was about 7%. The optimum efficiency, about 70% lies between the mass flow rates 0.07-0.08 kg sec~(-1). The thermal efficiencies increase with flow rate and it increase about 30% at mass flow rate of 0.04-0.08 kg sec~(-1). Conclusion: The efficiency is increased proportional to mass flow rate and solar radiation and .the efficiency of the collector is strongly dependent on the flow rate.
机译：问题陈述：合适的空气收集器的设计是控制太阳能干燥经济性的最重要因素之一。空气收集器有两个固有的缺点：空气的热容量低，吸收器对空气的传热系数低。建议并应用了不同的修改以改善吸收板与空气之间的传热系数。这些修改包括使用扩展的传热面积，例如翅片式吸收器。方法：已经通过改变太阳辐射和质量流率检查了太阳能收集器的效率。进行了分析和实验研究，以研究质量流量和太阳辐射对热效率的影响。能量方程的理论求解过程使用矩阵求逆方法并进行一些代数重排。结果：计算热效率的平均误差约为7％。最佳效率约为70％，介于质量流量0.07-0.08 kg sec〜（-1）之间。热效率随流量的增加而增加，在0.04-0.08 kg sec〜（-1）的质量流量下，热效率增加约30％。结论：效率与质量流量和太阳辐射成正比，并且集热器的效率在很大程度上取决于流量。

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  • 来源
    《American journal of applied sciences》 |2011年第7期|p.716-723|共8页
  • 作者

    Ahmad Fudholi; Kamaruzzaman Sopian; Mohd Hafidz Ruslan; Mohd. Yusof Othman; Muhammad Yahya;

  • 作者单位

    Solar Energy Research Institute, University Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia;

    Solar Energy Research Institute, University Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia;

    Solar Energy Research Institute, University Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia;

    Solar Energy Research Institute, University Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia;

    Solar Energy Research Institute, University Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    double-pass solar air collector; finned absorber; thermal efficiency;

    机译：双通道太阳能空气收集器;翅片吸收器热效率;

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