Study for the Irradiance Attenuation on the Cover of Solar Collectors Due To Humidity and Dustfall in Southern Taiwan

Chen, Jiann Lin; Tseng, Hsiang Tse; Chen, Guan Young; Yu, Guan Yi

doi:10.1016/j.egypro.2017.07.017

Cited by 1 publication

(1 citation statement)

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“…Gutierrez-Trashorras et al [24] reported in their paper the variation of monthly average solar radiation in the clean and turbid atmosphere and prove the effect of relative humidity on solar radiation. Chen et al [25] also presented the variation of solar irradiance with relative humidity. They found that 0.91% increase in relative humidity is responsible for the decrease in the intensity of solar radiation by 12.58%.…”

Section: Effect Of Vacuum Pressure and Wind Speedmentioning

confidence: 99%

Thermal performance analysis of helical coil solar cavity receiver based parabolic trough concentrator

Kumar

Shukla

2019

THERM SCI

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The present paper investigates the performance of helical coil solar cavity receiver based parabolic trough concentrator (PTC) for the conversion of energy received from the Sun into useful heat and finally electricity. The experimental setup has been designed in such a way that it enhances heat transfer coefficient and reduces losses in the PTC. The PTC comprised of a blackened helical coil made up of two concentric borosilicate glass cylinder with vacuum in the annulus, which is kept at a focal line of PTC. The vacuum significantly reduces the losses which are evident from a relatively higher temperature of a 565 K obtained at the surface of the helical coil. Heat loss from helical coil solar cavity receiver has also been investigated and it was found that with the increase in vacuum pressure at annulus by 50%, the losses from the receiver has been increased by 26.67%. The heat loss from receiver has been observed to be proportional to the vacuum pressure within the annulus space.

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Section: Effect Of Vacuum Pressure and Wind Speedmentioning

confidence: 99%