Experimental and modelling performances of a roof-integrated solar drying system for drying herbs and spices

被引：66

作者：

Janjaia, S. ^{[1
]}

Srisittipokakun, N. ^{[1
]}

Bala, B. K. ^{[2
]}

机构：

[1] Silpakorn Univ, Fac Sci, Dept Phys, Solar Energy Res Lab, Nakhon Pathom 73000, Thailand

[2] Bangladesh Agr Univ, Dept Farm Power & Machinery, Mymensingh 2202, Bangladesh

来源：

ENERGY | 2008年 / 33卷 / 01期

关键词：

roof-integrated solar collector; solar dryer; rosella flower; chili; modelling; simulation;

D O I：

10.1016/j.energy.2007.08.009

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper presents experimental performance of solar drying of rosella flower and chili using roof-integrated solar dryer and also presents modelling of the roof-integrated solar dryer for drying of chili. Field-level tests for deep bed drying of rosella flower and chili demonstrated that drying in the roof-integrated solar dryer results in significant reduction in drying time compared to the traditional sun drying method and the dry product is a quality dry product compared to the quality products in the markets. The payback period of the roof-integrated solar dryer is about 5 years. To simulate the performance of the roof-integrated solar dryer for drying herbs and spices using hot air from roof-integrated solar collectors, two sets of equations were developed. The first set of equations was solved implicitly and the second set of equations was solved explicitly using finite difference technique. The simulated air temperatures at the collector outlet agreed well with the observed air temperatures. Good agreement was also found between experimental and simulated moisture contents. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：91 / 103

页数：13

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