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| Experimental Research on the Evaporation Rate of IPA in a Vertical Hole Affected by Horizontal Flow |
| YANG Kangjun，DING Guoliang，PU Hui，ZHU Yu，HU Haitao |
| (Institute of Refrigerant & Cryogenics Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract The evaporation rate of IPA under three kinds of flow velocities and six kinds of hole diameters were experimentally studied, and the local mass transfer coefficients (Sherwood number) inside holes that indicate evaporation rate were analyzed. The experimental results show that IPA evaporation process can be divided into three different steps: strong convection, convection mass transfer and diffusion. The local mass transfer coefficient is larger under condition of higher flow velocity and larger diameter of hole. The local mass transfer coefficients inside holes whose diameters ranging from 3 mm to 5 mm are about 100 times larger than those inside holes whose diameters ranging from 0.05 mm to 0.2 mm. Two correlations of local mass transfer coefficient were developed for mmscale holes and μmscale holes respectively.isopropanol
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Received: 31 July 2009
Published: 29 April 2010
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