Enhancement of the Solar-Thermal Response of Flat-plate Collector Coated with a Heat-resistant Paint

IF 0.5 Q4 PHYSICS, MULTIDISCIPLINARY

Jordan Journal of Physics Pub Date : 2022-08-31 DOI:10.47011/15.3.10

Ruaa H. Jasim, Ahmed A. Al-Tabbakh

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Abstract

Abstract: A commercially available heat-resistant paint (HRP) is used as the primary component of a composite coating for low-temperature flat collector system. The same is mixed with small amounts of carbon black powder (CBP), lithium metal oxide (LMO) powder or both in an attempt to enhance the coating solar-thermal conversion characteristics. The optical characteristics of these coatings are investigated by means of optical microscopy, optical spectrophotometry and measurement of reflectance. The solar-thermal conversion characteristics are investigated by measuring the maximum collector temperature due to exposure to solar radiation. Results show that the solar-thermal conversion (maximum temperature) of the collector plate can be improved with the addition of CBP and LMO particles at low concentrations. The solar-thermal characteristics of the coatings are reported and compared with those of different coatings. The coatings prepared in the present work can easily be applied on the collector surface, which makes them suitable for flat-plate collector systems. Keywords: Flat plat collector, Selective coating, Optical properties, Solar irradiance.

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涂有耐热涂料的平板集热器的太阳能热响应增强

摘要：采用市售的耐热涂料（HRP）作为低温平板集电系统复合涂层的主要成分。将其与少量炭黑粉末（CBP）、锂金属氧化物（LMO）粉末或两者混合，试图增强涂层的太阳能热转换特性。通过光学显微镜、光学分光光度法和反射率测量等方法研究了这些涂层的光学特性。通过测量暴露于太阳辐射下的最高收集器温度来研究太阳能热转换特性。结果表明，低浓度CBP和LMO颗粒的加入可以提高集电板的太阳能热转化率（最高温度）。报道了涂层的光热特性，并与不同涂层的光热性能进行了比较。本工作中制备的涂层可以很容易地涂覆在集电体表面，这使得它们适用于平板集电体系统。关键词：平板集热器；选择性涂层；光学性能；太阳辐照度。

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来源期刊

Jordan Journal of Physics PHYSICS, MULTIDISCIPLINARY-

CiteScore

0.90

自引率

14.30%

发文量