1980年以来,西藏太阳能应用有了较大发展,其中最引人注目的是太阳能浴室的推广。仅以拉萨市为例,数十座太阳能浴室在短短二、三年内相继建成,基本解决了拉萨市干部、职工及家属洗澡难的问题。然而,随着严冬季节的来临,一些浴室停止了使用,究其原因有多种,其中突出的问题是热水系统集热效益明显下降。据了解,一些太阳能浴室冬季产热水量 Since 1980, solar energy applications in Tibet have been greatly developed, the most notable of which is the promotion of solar energy bathrooms. In Lhasa alone, dozens of solar-powered bathrooms were built in just two or three years, basically solving the difficult task of bathing cadres, workers and their families in Lhasa. However, with the advent of the winter season, some bathrooms cease to be used for a variety of reasons. Among them, the prominent problem is that the heat collection efficiency of hot water systems has dropped significantly. It is understood that some solar water heaters produce hot water in winter