储热式真空管集热器管中心距与能量收益关系的研究  

A STUDY ON THE RELATION BETWEEN ENERGY GAIN AND CENTER TO CENTER DISTANCE OF EVACUATED TUBES IN INTERGAL COLLECTOR STORAGE SOLAR WATER HEATER

作　　者：葛洪川[1,2] 李炜 闵子建[1,2] 

机构地区：[1]北京市太阳能研究所 [2]首都师范大学物理系

出　　处：《太阳能学报》1997年第3期262-268,共7页Acta Energiae Solaris Sinica

摘　　要：在实验测定吸热板表面相对太阳辐照度和涂层太阳吸收比的基础上，分析研究了具有圆柱形吸热体的真空管集热器，在不同管中心距下的能量收益因子随光线入射角的变化规律。依据晴天辐射模型，对北半球不同纬度和倾角、朝南放置的该集热器的管中心距与能量收益关系进行分析。Based on measuring data of relative solar irradiance on absorbers with cylindric shapes in evacuated collector tube(ECT)as well as that of solar absorptivity changing with incident angles on the coating,this paper has analyzed and investigated regular patterns of energy gain factor changing with incident angle at different center to center distances of ECT with cylindric absorbers.According to the Clear Day Model,daily energy gain and its annual variation for different center to center distances of ECT with southward cylindrical absorbers at different northern latitudes and various inclined angles have been calculated and compared.

关 键 词：真空集热管 能量收益 管中心距 储热 太阳能 

分 类 号：TK513[动力工程及工程热物理—热能工程]