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首页> 外文期刊>Case Studies in Thermal Engineering >Performance analysis of different U-shaped heat exchangers in parabolic trough solar collector for air heating applications
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Performance analysis of different U-shaped heat exchangers in parabolic trough solar collector for air heating applications

机译：用于空气加热应用的抛物面槽太阳能收集器不同U形热交换器的性能分析

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摘要

In this article, the thermal performance of a parabolic trough solar air heater (PTSAH) with a Ushaped heat exchanger is evaluated. The solar air heater’s performance is examined by using the copper and aluminum U-shaped heat exchangers (UHX) with and without fn alternately, inside the absorber tube placed at the focal length of the nickel-coated stainless steel parabolic trough. The system is examined in the form of temperature difference achieved at the outlet for both the heat exchangers and the solar air heater’s effciency. It is observed that the system performance with the copper heat exchanger is better than the aluminum heat exchanger. Further, it has been found that the effciency of the solar air heater is increased by 9.29% at a high ?ow rate with the use of fn when using a copper heat exchanger in place of the aluminum heat exchanger. The temperature difference achieved by the system is also increased by 2.34% at a low ?ow rate. At elevated temperatures, the percentage increase in solar air heater performance for the aluminum heat exchanger is higher than the copper heat exchanger.
机译：在本文中，评估抛物线槽太阳能空气加热器（PTSAH）与USHAPED热交换器的热性能。通过使用铜和铝U形热交换器（UHX）交替使用铜和铝U形热交换器（UHX）来检查太阳能空气加热器的性能，在放置在镀镍的不锈钢抛物面槽的焦距处的吸收管内。该系统以在热交换器和太阳能空气加热器的出口处实现的温度差异的形式检查。观察到铜热交换器的系统性能优于铝热交换器。此外，已经发现，在使用铜热交换器代替铝热交换器时，在使用FN时，太阳能加热器的效率以高速率的增加而增加了9.29％。通过该系统实现的温度差异在低速率下也增加了2.34％。在高温下，铝热交换器的太阳能空气加热器性能的增加百分比高于铜热交换器。

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