| 蒸汽喷射器变工况性能的CFD探讨 |
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| 引用本文： | 王金锋,陶乐仁,王永红,陶宏. 蒸汽喷射器变工况性能的CFD探讨[J]. 低温与超导, 2008, 36(3): 44-48 |
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| 作者姓名： | 王金锋 陶乐仁 王永红 陶宏 |
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| 作者单位： | 1. 上海理工大学动力学院低温研究所,上海,200093
2. 特灵空调系统(江苏)有限公司上海分公司,上海,200001 |
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| 摘 要： | 利用二维轴对称,真实气体模型对喷射式制冷空调系统的喷射器进行CFD计算。真实气体模型占用较多的计算机资源,但它的计算结果更加真实。计算的目的在于得到在变工况条件下喷射器性能的变化和制冷系统性能的变化情况。在计算范围中,存在一最优的发生压力Pg*(3.973568bar),使得此时的喷射系数和系统COP最大。当Pg>Pg*时,喷射系数和COP随着发生压力的增加而减少;当Pg
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| 关 键 词： | 工程热物理 蒸汽喷射器 数值模拟 变工况 制冷系统 |
| 修稿时间： | 2007-12-03 |
CFD discuss of vapor ejector on variable condition |
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| Wang Jinfeng,Tao Leren,Wang Yonghong,Tao Hong. CFD discuss of vapor ejector on variable condition[J]. Cryogenics and Superconductivity, 2008, 36(3): 44-48 |
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| Authors: | Wang Jinfeng Tao Leren Wang Yonghong Tao Hong |
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| Abstract: | The 2D axisymmetric,real gas model was developed to calculate the ejector in the ejector cooling system.The calculation of the real gas model occupies more computer resources,but its result can be more authentic.The aim of the prediction is to obtain the ejector performance and COP in variable operating condition.There is an optimum generator pressure P*g(3.973568bar) with the giving geometry parameters.When Pg=P*g,the entrainment ratio reached the maximum value;when PgP*g,the entrainment ratio decreased a little slowly.The change of the primary and secondary mass flow is caused by the change of shock wave;the change of shock wave was the result of the change of generator pressure. |
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| Keywords: | Engineering thermophysics Vapor ejector Numerical simulation Variable condition Cooling system |
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