Comparative Analysis of Hybrid Photovoltaic Thermal (PV/T) Solar Dryer

IF 0.4 Q4 ENVIRONMENTAL SCIENCES

Asian Journal of Water, Environment and Pollution Pub Date : 2023-01-23 DOI:10.3233/ajw230009

S. Agrawal, T. Varshney, J. Kumar

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引用次数: 1

Abstract

As the world’s population is increasing, the demand for food is also increasing. Drying techniques increase the life and quality of crop and industrial food products. It also improves the economic condition of farmers. Drying reduces the water stored within the product by evaporation. It can be done by the use of conventional energy and different methods. Sun radiation is used for open sun drying around the globe. Open sun drying has many disadvantages in comparison to other drying techniques. Solar drying is comparatively clean and effective. Solar dryers are of mainly four types: 1) direct solar dryer; 2) indirect solar dryers; 3) mixed mode solar dryer and 4) hybrid solar dryers. Because electric and heat energy demand is increasing day by day worldwide, PV/T solar dryer becomes an interesting and upcoming interest of research nowadays. In this review article basics of different kinds of solar dryers and recent advancements in hybrid PV/T dryers have been presented. Results for drying grapes, medicinal herb, tomato, and wood using PV/T solar dryer are discussed in this study. Variations of drying time, energy consumption, efficiency with different air temperatures, air flow rate and RH are discussed. The use of different solar collectors, solar air heater and heat storage materials with hybrid PV/T dryer have also been reviewed.

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混合光伏热(PV/T)太阳能干燥器的比较分析

随着世界人口的增加，对粮食的需求也在增加。干燥技术提高了作物和工业食品的使用寿命和质量。它还改善了农民的经济状况。干燥通过蒸发减少了产品中储存的水分。它可以通过使用传统能源和不同的方法来实现。太阳辐射用于全球各地的露天晒太阳。与其他干燥技术相比，露天干燥有许多缺点。太阳能干燥是相对清洁和有效的。太阳能干燥器主要有四种类型：1）直接太阳能干燥器；2）间接太阳能干燥器；3）混合模式太阳能干燥器和4）混合太阳能干燥器。由于全球对电能和热能的需求日益增长，光伏/太阳能烘干机成为当今一个有趣且即将到来的研究热点。在这篇综述文章中，介绍了不同类型的太阳能干燥器的基本原理以及光伏/T混合干燥器的最新进展。本研究讨论了使用PV/T太阳能烘干机烘干葡萄、中草药、番茄和木材的结果。讨论了不同空气温度、空气流量和相对湿度对干燥时间、能耗、效率的影响。还对不同的太阳能集热器、太阳能空气加热器和储热材料与PV/T混合干燥器的使用进行了综述。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Asian Journal of Water, Environment and Pollution ENVIRONMENTAL SCIENCES-

CiteScore

1.00

自引率

20.00%

发文量

期刊介绍： Asia, as a whole region, faces severe stress on water availability, primarily due to high population density. Many regions of the continent face severe problems of water pollution on local as well as regional scale and these have to be tackled with a pan-Asian approach. However, the available literature on the subject is generally based on research done in Europe and North America. Therefore, there is an urgent and strong need for an Asian journal with its focus on the region and wherein the region specific problems are addressed in an intelligent manner. In Asia, besides water, there are several other issues related to environment, such as; global warming and its impact; intense land/use and shifting pattern of agriculture; issues related to fertilizer applications and pesticide residues in soil and water; and solid and liquid waste management particularly in industrial and urban areas. Asia is also a region with intense mining activities whereby serious environmental problems related to land/use, loss of top soil, water pollution and acid mine drainage are faced by various communities. Essentially, Asians are confronted with environmental problems on many fronts. Many pressing issues in the region interlink various aspects of environmental problems faced by population in this densely habited region in the world. Pollution is one such serious issue for many countries since there are many transnational water bodies that spread the pollutants across the entire region. Water, environment and pollution together constitute a three axial problem that all concerned people in the region would like to focus on.