沼气工程生物质能-太阳能互补供热系统优化设计  

Optimization Design of Biogas Engineering with Biomass Energy-Solar Energy Complementary Heating System

作　　者：赵凯 冯晶 孟海波 李冰峰 罗娟 于佳动 黄开明 ZHAO Kai;FENG Jing;MENG Hai-bo;LI Bing-feng;LUO Juan;YU Jia-dong;HUANG Kai-ming(Hebei new energy technology promotion station,Shijiazhuang 050021,China;Key Laboratory of Energy Resource Utilization from Agriculture Residue,Ministry of Agriculture,Beijing 100125,China;Rural Energy ＆ Environment Agency,Ministry of Agriculture,Beijing 100125,China)

机构地区：[1]河北省新能源技术推广站,河北石家庄050021 [2]农业部农业废弃物能源化利用重点实验室,北京100125 [3]农业部农业生态与资源保护总站,北京100125

出　　处：《中国沼气》2018年第4期44-48,共5页China Biogas

基　　金：公益性行业(农业)科研专项(201503135-3)

摘　　要：为实现沼气工程生物质能-太阳能互补供热系统经济效益最大化,文章以华北地区5000 m^3CSTR厌氧消化罐为实例,采用线性规划方法对该系统的关键参数进行优化。结果表明:该厌氧消化罐的散热量1月份最高,7月份最低,分别为330.02 kW和139.18 kW。笔者使用生物质能-太阳能互补供热系统为该CSTR发酵罐供热,当成型燃料锅炉功率为509.3 kW,太阳能集热器面积为1775.6 m^2,蓄热水箱容积为10.48 m^3时,折合年费用最低。此时,初投资为1871696元,年运行成本为169736元,折合年费用294515元。初始投资中,太阳能集热器的投资比例最大,占94.9%;生物质颗粒燃烧器占4.08%。运行成本中,生物质颗粒燃烧占75.26%。相比沼气热水锅炉、生物质锅炉与太阳能加热系统,生物质能-太阳能互补供热系统初始投资与年运行费用较低,更适合于中小规模的沼气工程,具有广泛的推广价值。To maximize economic benefits of the biogas plant with biomass energy-solar energy complementary heating system,a 5000 m^3 scale biogas plant on dairy farm with 4500 herds in North China was optimized for its key parameters using linear programming. The results showed that the heat dissipating capacity reached the highest and lowest points in January and July respectively,which was 330. 02 kW and 139. 18 kW. After the optimization,the biomass energy-solar energy complementary heating system had the lowest annualized cost when the biomass briquettes boiler was 509. 03 kW,the solar collector area was 1775. 6 m^2,and the volume of hot water storage tank was 10. 48 m^3.. In this case,the initial investment was1,871,696 yuan and annual operating costs 169,736 yuan respectively,which was equivalent to the annual cost of 294515 yuan. The solar collectors accounted for 94. 9 % of initial investment and biomass pellet burners accounted for 4. 08%. For the running costs,the biomass pellets accounted for 75. 26%. Comparing with biogas boiler,biomass boiler,and solar heating system,the biomass energy-solar energy complementary heating system had a moderate annual cost,which was more suitable for small and medium-scale biogas projects.

关 键 词：沼气工程 加热 生物质能-太阳能互补 优化 

分 类 号：S216.4[农业科学—农业机械化工程] TK51[农业科学—农业工程]