Experimental investigation on a solar assisted heat pump in-store drying system

被引：39

作者：

Li, Y. ^{[1
]}

Li, H. F. ^{[1
]}

Dai, Y. J. ^{[1
]}

Gao, S. F. ^{[2
]}

Wei, Lei ^{[2
]}

Li, Z. L. ^{[2
]}

Odinez, I. G. ^{[3
]}

Wang, R. Z. ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogen, Shanghai 200030, Peoples R China

[2] China Grain Reserves Corp, Beijing, Peoples R China

[3] Univ Illinois, Dept Civil & Mat Engn, Chicago, IL USA

来源：

APPLIED THERMAL ENGINEERING | 2011年 / 31卷 / 10期

关键词：

In-store drying; Grain; Solar air collector; Heat pump; Equilibrium model;

D O I：

10.1016/j.applthermaleng.2011.02.014

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Solar powered drying is an environment-friendly technique utilized to dry grain. A novel in-store drying system composed of Flat-plate air collectors, a heat pump, fans, air ducts, and grain stirrer is proposed to make full use of solar energy and to reduce the consumption of electricity. A demonstration system was built and tested in Kunming, China. The experimental data was compared with the results derived from a mathematical simulation. The experimental and simulated data demonstrate that the solar assisted heat pump drying system improved the performance of the in-store drying process. An average temperature rise of 8.9 degrees C for the granary inlet air was achieved. The drying rate was increased and the uniformity of grain moisture content was improved. In addition, the grain was maintained in good quality and the level of power consumption was reduced. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1718 / 1724

页数：7

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