杨选民,王雅君,邱 凌,赵立欣,贾吉秀,王小亮.槽式抛物面太阳能聚光集热器供热厌氧反应器研究[J].农业机械学报,2016,47(7):202-207.
Yang Xuanmin,Wang Yajun,Qiu Ling,Zhao Lixin,Jia Jixiu,Wang Xiaoliang.Design and Implementation of Parabolic Trough Concentrator Heating Anaerobic Reactor[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(7):202-207.
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槽式抛物面太阳能聚光集热器供热厌氧反应器研究   [下载全文]
Design and Implementation of Parabolic Trough Concentrator Heating Anaerobic Reactor   [Download Pdf][in English]
投稿时间:2016-01-07  
DOI:10.6041/j.issn.1000-1298.2016.07.028
中文关键词:  厌氧反应器  太阳能聚光集热器  稳态模拟
基金项目:公益性行业(农业)科研专项(201503135-18)
作者单位
杨选民 西北农林科技大学 
王雅君 西北农林科技大学
农业部规划设计研究院 
邱 凌 西北农林科技大学
农业部农村可再生能源开发利用西部科学观测实验站 
赵立欣 农业部规划设计研究院 
贾吉秀 农业部规划设计研究院 
王小亮 西北农林科技大学 
中文摘要:应用能量密度较高的槽式抛物面太阳能聚光集热器(PTC)为厌氧反应器提供热源,确定装置中重要单元的尺寸,并进行了反应器内部能量平衡的计算,得出8m3的地下厌氧反应器内最大2处负荷分别为进料热损失与发酵物料散失热量,分别为16077.31kJ/d和23180.01kJ/d。通过计算得出相应的聚光集热器的关键参数,确定光孔宽度b为2..4m,焦距f为0.6m,集热板面积为4.16m2,集热管直径为0.0168m。应用流体力学模拟软件Fluent对反应器内整体的传热效果进行模拟,仿真结果表明反应器内料液温度可维持在35℃左右。采用与设计参数相近的PTC系统和厌氧反应器进行试验验证,厌氧反应器内料液温度保持在33.6~35.8℃,与Fluent仿真结果基本吻合。
Yang Xuanmin  Wang Yajun  Qiu Ling  Zhao Lixin  Jia Jixiu  Wang Xiaoliang
Northwest A&F University,Northwest A&F University;Chinese Academy of Agricultural Engineering,Northwest A&F University;West Scientific Observing and Experimental Station of Rural Renewable Energy Exploitation and Utilization, Ministry of Agriculture,Chinese Academy of Agricultural Engineering,Chinese Academy of Agricultural Engineering and Northwest A&F University
Key Words:anaerobic reactor  parabolic trough concentrator  steady simulation
Abstract:For an anaerobic fermentation system, the temperature is one of key factors which affect the efficiency of biogas production. A parabolic trough concentrator (PTC) was used as the heat source for an 8m3 underground anaerobic digester. To improve the efficiency of concentrating solar collectors and the biogas productivity of traditional anaerobic fermentation system, the sizes of important components in the digester were determined, and the energy balance was also calculated. Moreover, the angle change of solar concentrator in Yangling was counted, the angle of the collector during one year was optimized, and the inclination angle and installation method of the concentrator bracket were also designed. It was found that feed heat loss (16077.31kJ/d) and wall heat loss (23180.01kJ/d) were the two main heat loads in this system. The key parameters of PTC were determined: the size of aperture was 2.4m, the focal distance was 0.6m, the area of collector was 4.16m2, and the diameter of collector pipe was 0.0168m. In addition, the heat transfer of anaerobic reactor was simulated through Fluent software. The simulation results revealed that interior temperature in the digester could be maintained at 35℃. A PTC based anaerobic digester with similar parameters of simulation model was designed to verify the simulation effect. The experiment results indicated that the temperature range of material liquid in the reactor could be kept at 33.6~35.8℃, approximately consistent with the Fluent simulation. The results in this study provide a new solution for efficient and low cost biogas fermentation device.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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