Optimization Design of Heat Collector for Greenhouse in Winter
A new type of solar flat collector was made,and its average heat collection efficiency in winter in Northeast China was 40％-62％.The heat was used for greenhouse heating in winter.Three factors that are most related to heat collection efficiency were chosen,namely,the type of cover plate,the shape of the heat absorption plate structure,and the insulation material,the mixed-type orthogo-nal test design was carried out,and the relationship between the selected factors and the test indexes were analyzed.The range analysis shows that the collector had the best heat collection performance when a double-layer hollow glass cover plate with reflector,a V-type heat absorption plate structure and polyethylene plate insulation material were used.
solar flat collectorgreenhousemixed-type orthogonal test
万方数据
维普
