摘要
研究了太阳能空气集热器Ⅰ型的传热性能,建立了基于一维假设下的热量传递的数学模型,导出了准静态条件下沿程温度分布、出口温度、全天集热效率的近似解.通过计算,分析了进口温度、工质流速、流道深度对集热器传热性能的影响,计算结果表明全天集热效率随工质流速的增大而增大、随进口温度的升高而急剧下降、随着流道深度的增加。
A mathematical model based on onedimensional assumption is developed to study the heat transfer characteristics in the solar air heater of type ⅠThe approximate solutions for the local air temperature and daily thermal efficiency are obtained at the quasisteady stateThe effect of various parameters such as the inlet air temperature,air velocity and the depth of air channel on thermal performances of the air heater are analyzedIt is discovered that daily thermal efficiency increases with increasing air velocity, decreasing temperature of inlet air and depth of the air channel
出处
《江苏大学学报（自然科学版）》
EI
CAS
2003年第4期41-44,共4页
Journal of Jiangsu University：Natural Science Edition
