北方村镇电能复合太阳能供热系统经济技术分析

Technical and Economic Analysis of Electric Energy Combined Solar Heating System in Villages and Towns of Northern China

结合北方地区"煤改电"清洁供暖改造,提出了电直接利用,空气源热泵与地源热泵等3种复合太阳能"煤改电"供热方式。计算了不同复合供热方案的设备造价,运行费用和费用年值。给出了优化供热方案的太阳能集热面积比。结果表明,计算条件下空气源热泵复合太阳能供热系统的方案经济性较好。预期使用年限小于7年时,热风型空气源热泵复合太阳能供热系统单位供暖面积费用年值为20.5元/m^2,推荐集热面积比为7%。预期使用年限在15年内时,热水型空气源热泵复合太阳能供热系统供暖面积费用年值为14.4元/m^2,推荐集热面积比为10%。

In response to the call of ＂coal to electricity＂ clean heating in northern China,three kinds of coupled solar energy heating schemes are proposed,including direct electricity utilization,air source heat pump and ground source heat pump coupled systems.The equipment cost,operating cost and annual cost of different coupled heating systems are calculated,and the solar collector area ratio of the optimized heating scheme is given.The results show that,by calculation,the air source heat pump coupled solar heating system is more economical.When the service life is less than 7 years,the unit annual heating cost of hot air type air source heat pump coupled solar heating system is 20.5 Yuan/m^2,with a recommended collector area ratio of 7%; when the service life is 15 years,the unit annual heating cost of hot water type air source heat pump coupled solar heating system is 14.4 Yuan/m^2,with a recommended collector area ratio of 10%.