我国北方,农村房屋冬季取暖方式主要依靠各种生物质——木柴、秸秆、牛马粪或矿物燃料以取得热能.利用生物质能取暖是一种非常落后的方式,特别是卫生条件差;而利用矿物燃料如煤炭、石油,农户经济负担重.因此燃料问题十分突出.为降低常规能源的消耗,很多国家都在积极发展太阳能采暖,我国在这 In northern China, winter heating in rural areas mainly relies on various biomass - wood, straw, cattle, horse manure or fossil fuels for thermal energy utilization. Heating biomass by biomass is a very backward way, especially with poor sanitary conditions; Fossil fuels such as coal, oil, farmers economic burden, so the fuel problem is very prominent in order to reduce the consumption of conventional energy, many countries are actively developing solar heating, our country here