化工学报2016，Vol.67Issue(z2)：370-377,8.DOI:10.11949/j.issn.0438-1157.20161351
以 LFG 为燃料的空气源沼气机热泵供热性能
Heating performance of landfill gas fuled biogas engine driven air source heat pump
摘要
Abstract
To utilize the renewable energy source from landfill gas (LFG)and reduce the consumption of fossil fuels,an LFG fueled biogas engine driven air source heat pump heating system was presented and its heating performance was studied.The type of the LFG collecting system and the LFG purifying process suitable for this system were determined.The experimental platform established can experimentally test two operating modes respectively,i.e.,the waste heat recovery from biogas engine exhaust fume alone or from both cylinder liner cooling water and exhaust fume simultaneously, by shifting the switching valves.The heating performance of the system was tested, and factors such as biogas engine speed, condenser water flow rate and condenser inlet water temperature, which have effect on the heating performance,were analyzed.Results of the experiment indicated that the total heating output of the system increased with biogas engine speed and condenser water flow rate,but it decreased with condenser water inlet temperature rise.Although the coefficient of performance (COP)and the primary energy ratio (PER)of the system reduced with condenser water inlet temperature rise as well,but their relationship with condenser water flow rate was not monotonic one.The study also revealed that the heating performance of the system was in its maximum when the condenser water flow rate ran at 1.45—1.65 kg·s-1 ,and the COP and PER of the system reached their maximum of 4.3 and 1.48 respectively when the condenser water inlet temperature was 35—45℃.关键词
再生能源/热力学过程/余热回收/垃圾填埋气/冷凝器水流量/冷凝器进水温度/数值分析Key words
renewable energy/thermodynamics process/waste heat recovery/landfill gas/condenser water flow rate/condenser water inlet temperature/numerical analysis分类
建筑与水利引用本文复制引用
马益民,吴集迎..以 LFG 为燃料的空气源沼气机热泵供热性能[J].化工学报,2016,67(z2):370-377,8.基金项目
国家自然科学基金项目(51508225) （51508225）
福建省科技引导性(重点)项目(2016 H0024)。@@@@supported by the National Natural Science Foundation of China (51508225) and the Guiding (Key) Project of Fujian Provincial Department of Science & Technology (2016H0024) （重点）
