螺旋盘管腔式吸热器在塔式和碟式太阳能热利用中都有广泛的应用。聚集热流的非均匀性导致吸热器内产生温度梯度，从而在管内产生热应力，导致吸热管变形，而当温度梯度足够大时，热应力会导致吸热管破坏，严重影响吸热器的寿命。本文以四种气体工质为传热介质，基于CFD分析得到气体在吸热器中的管内流动情况及管壁的温度场分布，再将管壁得到的温度场直接加载到热应力分析模型中得到螺旋管的热应力分布。
The spiral tube has been wildly used as receivers in solar thermal power plant which turn solar radiation into electricity. Since the concentrated heat flux so high and non-uniform, the temperature gradient of the receiver will also be large, that high thermal stress will generate in the spiral tube, and when the thermal stress is high enough, the tube will be destroyed, and the solar receiver will also be destroyed immediately. In this study four kinds of gases had been used as transfer fluid. Firstly, CFD analysis was employed to obtain the fluid and temperature field, and then we used the temperature flied obtained to compute the thermal stress field of the spiral tube in heat receiver.
参考文献
| [1] | Lata JM;Rodriguez M;de Lara MA .High flux central receivers of molten salts for the new generation of commercial stand-alone solar power plants[J].Journal of Solar Energy Engineering,2008(2):21002-1-21002-5-0. |
| [2] | 杨敏林,杨晓西,林汝谋,袁建丽.太阳能热发电技术与系统[J].热能动力工程,2008(03):221-228. |
| [3] | Francois Nepveu;Alain Ferriere;Francoise Bataille .Thermal Model Of A Dish/stirling Systems[J].Solar Energy,2009(1):81-89. |
| [4] | 方嘉宾,魏进家,董训伟,王跃社.腔式太阳能吸热器热性能的模拟计算[J].工程热物理学报,2009(03):428-432. |
| [5] | 许辉,张红,白穜,丁莉,庄骏.碟式太阳能热发电技术综述（一）[J].热力发电,2009(05):5-9,17. |
| [6] | 刘斌,吴玉庭,杨征,马重芳.螺旋盘管腔式熔盐太阳能吸热器的分析优化和研制[J].工程热物理学报,2009(06):995-998. |
| [7] | A. Kribus;H. Ries;W. Spirkl .Inherent limitations of volumetric solar receivers[J].Journal of Solar Energy Engineering,1996(3):151-155. |
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