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Thermal, economic, and environmental analysis of a novel solar dryer for firewood in various temperate and tropical climates
Solar Energy ( IF 6.7 ) Pub Date : 2021-08-28 , DOI: 10.1016/j.solener.2021.08.060
Merlin Simo-Tagne 1, 2 , Martin Ndi-Azese 3, 4
Affiliation  

The wood drying process consumes a great deal of energy with pollutants carrying bi-products. To preserve tropical and temperate forests and protect the environment, it is important to optimize the use of energy using solar dryers that are less expensive and easy to construct. In this paper, mathematical modeling of a novel solar dryer for firewood has been examined and experimentally validated using average relative error analysis. The solar dryer functioning in forced convection is constructed with wood and wood panels, and it is constituted of a solar collector. This field experimental solar dryer is numerically simulated for climatic conditions existing in Yaoundé and Nancy environments. The role of the solar collector is methodically identified ultimately permitting its usage as an effective dryer in a temperate environment. Our results indicate that in the tropical environment, and during the summer and spring seasons, the thermal efficiency is higher than 40 %, but lower than 30 % during the winter and autumn seasons. The construction of this solar dryer type of 7 steres capacity functioning all the year is capable of reducing the production of pollutants near 26.106 tons of CO2 and 58.433 tons of CO2 for Nancy and Yaoundé respectively. Constructed for a life duration of 10 years, the payback period is equal to 1.893 years and 0.971 years when the dryer is used all the year from Nancy and Yaoundé respectively.



中文翻译:

在各种温带和热带气候下用于柴火的新型太阳能干燥器的热、经济和环境分析

木材干燥过程消耗大量能源,其中污染物携带副产物。为了保护热带和温带森林并保护环境,重要的是使用成本较低且易于建造的太阳能干燥机来优化能源的使用。在本文中,使用平均相对误差分析对新型太阳能柴火干燥器的数学建模进行了检查和实验验证。强制对流的太阳能干燥机由木板和木板构成,由太阳能集热器构成。该现场实验太阳能干燥器针对雅温得和南锡环境中存在的气候条件进行了数值模拟。太阳能收集器的作用被系统地确定,最终允许其在温带环境中用作有效的干燥器。我们的研究结果表明,在热带环境中,在夏季和春季,热效率高于 40%,而在冬季和秋季则低于 30%。这种全年运行的 7 立方米太阳能干燥机类型的建设能够减少近 26.106 吨二氧化碳的污染物产生分别为南锡和雅温得排放2吨和 58.433 吨 CO 2。建造寿命为10年,南锡和雅温得干燥机全年使用的投资回收期分别为1.893年和0.971年。

更新日期:2021-08-29
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