正弦型肋片太阳能空气集热器的数值模拟  

Numerical Simulation of Sinusoidal Finned Solar Air Collector

作　　者：易小芳 顾炜莉 满学鹏 YI Xiaofang;GU Weili;MAN Xuepeng(School of Civil Engineering,University of South China)

机构地区：[1]南华大学土木工程学院,湖南421001

出　　处：《建筑热能通风空调》2021年第12期19-24,共6页Building Energy & Environment

摘　　要：本文提出了一种正弦型肋片太阳能空气集热器,采用三因素三水平的正交试验法,对不同肋片参数的模型进行数值模拟,得出最优肋片参数组合为:波纹幅值15 mm,波纹周期100 mm和肋片高度45 mm。研究表明:在10时至15时的典型工况下,太阳辐射照度变化集热效率的影响较小。空气流量在0.03~0.08kg/s范围内,相较平板型肋片太阳能空气集热器,正弦型肋片太阳能空气集热器的平均集热效率高约4.9%、热迁移因子高约0.045,其热损系数则降低0.112 W/(m;·K),表明优化后太阳能空气集热器具有较高的集热性能和较低的热损失。In this paper, a sinusoidal finned solar air collector was proposed. By using the orthogonal test method of three factors and three levels, numerical simulation was carried out for models with different finned parameters. The optimal finned parameter combination was obtained as follows: ripple amplitude is 15 mm, ripple period is 100 mm and fin height is 45 mm. The results show that the influence of solar illuminance variation on heat collection efficiency is less under typical working conditions from 10 to 15 o ’clock. Air flow within the scope of 0.03 ~ 0.08 kg/s,compared with flat finned solar air collector, the average heat collection efficiency of the sinusoidal finned solar air collector is about 4.9%higher, the heat transfer factor is about 0.045 higher, while the heat loss coefficient is reduced by 0.112 W/(m;· K),indicating that the optimized solar air collector has higher heat collection performance and lower heat loss.

关 键 词：供正弦型肋片太阳能空气集热器 正交试验法 集热效率 热迁移因子 热损系数 

分 类 号：TK513.1[动力工程及工程热物理—热能工程]