户用太阳能中温沼气发酵系统的数值设计  

Household solar biogas system numerical design in cold area

作　　者：贾玲[1] 邢世录[1] 田瑞[1,2] 李嵩[3] 

机构地区：[1]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051 [2]内蒙古工业大学内蒙古自治区可再生能源重点实验室,内蒙古呼和浩特010051 [3]清华大学流体声学实验室,北京100084

出　　处：《热科学与技术》2013年第3期267-271,共5页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(51266007);内蒙古自治区可再生能源重点实验室提升计划资助项目

摘　　要：为了采用数值方法解决户用中温沼气发酵系统与太阳能系统的匹配问题,提高能源的利用率。根据某实验室搭建的电加热沼气池实验台架进行了相应的数值模拟,提出一套数值方法来计算户用沼气发酵系统加热到35℃时对应的出口温度及需要的加热时间,并根据数值计算结果设计与之匹配的太阳能系统。结果显示,6m3户用沼气池加热到发酵温度35℃时,系统需要运行4.5h,对应的全真空管太阳能集热器的面积为4.52m2。Numerical method was used to solve the matching problem of household middle temperature biogas digester system and solar system, in order to improve the utilization rate of energy. Numerical simulation platform was established according to a laboratory experi biogas digester. A numerical method was proposed to calculate menta 1 bench for electric heating outlet temperature of the household biogas digester system when it was heated to 35 ℃ and the heating time needed. Based on the that run numerical results, solar system matching with the digester system was designed. The result shows for a 6 m3 household biogas digester heated to fermentation temperature 35 ℃, the system need to 4.5 h, the corresponding full vacuum tube solar collector area is 4.52m2.

关 键 词：户用沼气池 太阳能系统 FLUENT数值模拟 

分 类 号：TK515[动力工程及工程热物理—热能工程]