太阳能-沼液余热式热泵高温厌氧发酵加温系统  

Heating System of High Temperature Biogas Digester by Solar Energy and Methane Liquid Heat Recovery Heat Pump

作　　者：裴晓梅[1] 石惠娴[2] 朱洪光[2] 龙惟定[3] 

机构地区：[1]同济大学机械工程学院,上海200092 [2]同济大学现代农业科学与工程研究院,上海200092 [3]同济大学中德工程学院,上海200092

出　　处：《同济大学学报（自然科学版）》2012年第2期292-296,共5页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金(2870234002);“十一五”国家科技支撑计划(2008BADC4B05);上海市科委科技发展基金(09391910700)

摘　　要：针对地源热泵式沼气池加温系统需要打地埋井及铺设地埋管受地质水质局限等问题,系统构建了太阳能—沼液余热式热泵高温厌氧发酵加温系统.对系统发酵池热负荷、沼液余热回收率、中高温热泵机组、太阳能集热装置等关键参数进行了理论计算,得出系统能够保证发酵池温度50±2℃,沼液余热回收量可以达到系统总需要热量的70%.系统特点在于采用太阳能和沼液余热联合作为中高温热泵低位热源并确立其三种运行模式,包括太阳能直接加温模式,太阳能低位热源—热泵加热模式和太阳能—沼液余热回收联合式热泵加温模式.A heating system of biogas digester was developed to avoid area limitations of buried wells in the heating system of biogas digester by ground-source heat pump, in which the heat energy was supplied by hot water from waste heat recovery coupled with solar-assisted heat pump. The key parameters such as the heat load of digester, waste heat recovery rate of the methane liquid, medium and high heat pump, the solar energy collector area and so on werecalculated. The results show that this system can guarantee the temperature of 50~2~C in the digester, the heat recovery rate of the methane liquid can reach upto 70%. The system is characterized by that the solar energy and waste heat recovery of the methane liquid serve as the low-graded heat sources of the heat pump. There are three kinds of running modes including the sloar energy heating directly, the solar energy low level heat sources heat pump, and the combination of the solar energy and waste heat recovery low- graded heat resources heat pump and so on. The waste heat recovery technique can make full use of energy of the system and prevent thermal pollution.

关 键 词：太阳能热泵 厌氧消化 余热回收 高温发酵 中 高温热泵 

分 类 号：S214.9[农业科学—农业机械化工程] TK529[农业科学—农业工程]