| 摘要: |
| 研究了自然对流条件下直流电场对竖直表面上霜晶初始形态的影响，拍摄了不同电场下的霜晶形态，研究发现，在成霜初期，电场越强，冷壁面上形成的水珠越小。当水珠完全冻结后，所形成的冰柱在一定时间内不断增大。在适当的电场下，亲水表面比裸铜表面能够更好地抑制霜层的厚度。对亲水表面结霜质量的研究表明，电场使结霜质量增加，并且结霜质量随着电场的增大而增大。 |
| 关键词: 热工学 表面特性 实验研究 结霜 电场 |
| DOI： |
| 修订日期：2005-07-28
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| 基金项目:国家自然科学基金;国家重点基础研究发展计划(973计划) |
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| Influences of Surface Characteristics on Frost Formation on Vertical Cold Plate with Electric Field |
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| Abstract: |
| The influences of direct current(DC) electric fields on the initial form of the frost crystal on a cold vertical plate were investigated.The photos of frost crystals formed on the plate were taken with different electric field intensities.The results show that at the initial stages of the frost formation,the stronger the electric field,the smaller the water drops formed on the cold plate.After the water drops froze completely,the formed ice columns would grow up gradually.The frost layer thickness on hydrophilic coating was lower than that on copper surface under certain electric-field intensity.The result of this study also shows that electric field leads to the frost mass increase,and the frost mass increases with the increase of the electric field intensity. |
| Key words: Pyrology,Surface characteristic,Experimental,Frost formation,Electric field |
