流体机械

2009, v.37;No.447(09) 58-62+57

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太阳能冷管吸附床脱附试验及二维模拟
Desorption Experiment and 2D Simulation on the Solar Cooling Tube

赵惠忠;张敏;吕静;于国清;邹志军;
ZHAO Hui-zhong1,ZHANG Min2,LV Jing1,YU Guo-qing1,ZOU Zhi-jun1(1.University of Shanghai for Science and Technology,Shanghai 200093,China;2.Shanghai Ocean University,Shanghai 200090,China)

摘要(Abstract):

根据平衡吸附理论,对太阳能真空管集热圆柱形吸附床在不同太阳方位角下,各个区域脱附温度脱附过程的冷凝温度以及脱附量进行了二维模拟,并将模拟计算值与试验值进行了比较。结果表明,采用二维脱附模型可以较为准确地表述脱附过程的吸附床温度变化以及脱附量变化,吸附床模拟整个脱附过程计算平均温度为183.8℃,试验实测温度为178.3℃,两者相差5.5℃,相对偏差3.1%;冷凝温度计算值与试验值整体偏差不大,分别为44.9℃和48.0℃,相对偏差为6.5%。脱附量的计算值与试验值最大相对偏差为9.1%左右,该冷管的COP值约为0.24~0.28,比以往冷管COP提高了约20%。
Basing the equilibrium adsorption theory,the adsorbent temperature,the condenser temperature and the desorption mass of the solar cooling tube with the cylinder bed were calculated in 2D numerical simulation.The calculation results were accorded with the experimental data and the following conclusion could be drown: the 2D numerical simulation method can describe the adsorbent temperature variation and desorption mass variation accurately.The calculation and experiment temperature of the adsorbent bed are 183.8℃ and 178.3℃ respectively,and the difference is about 5.5 ℃ and relatively err is less than 3.1%.The calculation and experiment temperature of the condenser are 44.9℃ and 48.0℃ respectively and relatively err is about 6.5%.The maximum err of the calculation and experiment desorption mass is about 9.1% and its COP increased about 20% the ever solar cooling tube.

关键词(KeyWords): 太阳能;冷管;脱附过程;复合吸附剂;二维模拟
solar energy;cooling tube;desorption refrigeration;compound adsorbent;2D numerical simulation

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基金项目(Foundation): 上海市教育委员会科研创新项目(09YZ229);; 上海市教育委员会重点学科建设项目(J50502)

作者(Author): 赵惠忠;张敏;吕静;于国清;邹志军;
ZHAO Hui-zhong1,ZHANG Min2,LV Jing1,YU Guo-qing1,ZOU Zhi-jun1(1.University of Shanghai for Science and Technology,Shanghai 200093,China;2.Shanghai Ocean University,Shanghai 200090,China)

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