可再生能源2011，Vol.29Issue(2)：12-15,21,5.
平板式太阳能空气集热器流道改进的试验研究和数值模拟
Experimental investigation and numerical simulation on improvement of flat-plate solar air collector flow channels
丁刚 1左然 1张旭鹏 1王坤2
作者信息
- 1. 江苏大学能源与动力工程学院,江苏镇江212013
- 2. 镇江市新梦溪能源有限公司,江苏,镇江,212013
- 折叠
摘要
Abstract
The flow channels of traditional flat-plate solar air collector were changed from diagonal inlet/outlet to multi-inlet/outlet. Experimental investigation on characteristics of solar air collectors after the improvement of flow channels was reported. The inlet and outlet channels of the conventional air collector were improved. The new flow channel eliminates the ununiformity of heat transfer between air and absorber plate, so there is a distinct temperature increasing at the outlet. The instantaneous efficiency is improved by about 20％ at the same condition. An analysis of flow characteristics and heat transfer in the collectors had been carried out by using Computation Fluid Dynamic (CFD). There is the dead zone in flow field of traditional collector. The temperature distribution of center section is different and there is local high-temperature region on the heat-absorbing plate in the traditional collector, while the flow field and temperature distribution are uniform in the improved collector.关键词
太阳能空气集热器/流道改进/瞬时效率/数值模拟Key words
solar air collector/ improvement of flow channels/ instantaneous efficiency/ numerical simulation分类
能源科技引用本文复制引用
丁刚,左然,张旭鹏,王坤..平板式太阳能空气集热器流道改进的试验研究和数值模拟[J].可再生能源,2011,29(2):12-15,21,5.
