热电沼气联供系统冬季性能试验研究

Performance of Biogas System Providing Both Heat and Power in Winter

为了解决农村地区生活热水、生活燃气和冬季采暖的问题,研发了光伏、光热和沼气互补的新型热电气联供系统,笔者在2014年12月12日~2015年3月31日在甘肃民勤地区进行了室外试验,测试并研究了该系统在整个采暖季内的产能性能。研究结果表明在整个供暖期该系统发电量260.7 k Wh,总产沼气110.71 m3,试验户供暖期共用680.70 kg标煤,比达到试验户同等温度水平的对比户节约标煤5819.30 kg。理论分析了系统的节能环保性和能源经济性,与传统供能系统相比,该一体化热电气联供系统每年为农户可节省用能费用11046.20元,投资回收期为4.37年,太阳能主动供暖节能率可达到89.5%。试验研究为建设美丽乡村提供理论指导和借鉴。

In order to solve the problem of cooking and heating in winter for rural area,a combined system providing heat,power and biogas,was proposed,in which the solar thermal,solar photovoltaics,and biogas were combined,and a outdoor experiment was carried out at Min Qin district,Gansu province,from December 2014 to March 2015. The energy production during the whole heating season was investigated. The results showed that the system could save 5819. 30 kg of standard coal comparing with the same temperature contrast household. And it produced 260. 7 k Wh of power and 110. 71 m3 of total biogas during the whole heating season. The character of energy saving,environmental protection,and energy economy,were analyzed. It could save the energy cost of 11046. 20 Yuan every year. Its payback periods would be 4. 37 years.And the energy saving rate of active solar heating system reached 89. 5%.