基于生物质燃气的农村地区生态校园供能模式研究

Distributed energy supply in rural area eco-school based on biogas and LPG blends

提出一种基于沼气掺混液化石油气(LPG)的生物质燃气分布式供能系统,并以某寄宿制1 200人在校师生校园为例,分析了系统技术经济性及温室气体减排情况。结果表明,生物质燃气分布式供能系统将常规能源与可再生能源沼气结合可持续稳定地为校园供能,以15%LPG掺混量可以满足校园全年能源需求,与原有供能方式相比,生物质燃气供能模式每年可节省能源费用4.61万元,工程静态投资回收期约为4.2年;采用沼气掺混LPG的生物质燃气分布式供能系统后,农村地区生态校园的减排效益显著,每年可减排CO2204.2 t,减排SO21.5 t。

A distributed energy system（DES） based on biogas and liquefied petroleum gas（LPG） blends was presented in this paper.A boarding school with 1 200 teachers and students in rural area was taken were an example,the system technology economy and greenhouse gas emissions were analyzed.The results showed that,biomass gas DES combines conventional energy and renewable energy biogas for the school energy supply continuously and stably.The 15% LPG addition to biogas could meet the energy needs of the school throughout the year,compared to the conventional way of energy supply,the annual energy cost savings was 46 100 Yuan,and the static investment recovery period was about 4.2 years.In addition,the use of biogas and LPG biomass DES in rural eco-campus would achieve significant emission reduction benefits,the annual CO2 emission reduction was 204.2 t,SO2 emission reductions was 1.5 t.