Experimental Investigation of EHD-Enhanced Water Evaporation
Publish place: 16th Annual Conference on Mechanical Engineering
Publish Year: 1387
نوع سند: مقاله کنفرانسی
زبان: English
View: 2,438
This Paper With 7 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ISME16_747
تاریخ نمایه سازی: 20 آبان 1386
Abstract:
Enhancement of forced flow evaporation rate by applying electric field (corona wind) has been experimentally evaluated in this study. Corona wind produced by a fine wire electrode which is charged with positive high DC voltage impinges to water surface and leads to evaporation enhancement by disturbing the saturated air layer over water surface. The study was focused on the effect of corona wind velocity, electrode spacing and air flow velocity on the level of evaporation enhancement. Two sets of experiments, i.e. with and without electric field, have been conducted. Data obtained from the first experiment were used as reference for evaluation of evaporation enhancement at the presence of electric field. Applied voltages ranged from corona threshold voltage to spark over voltage at 1 kV increments. The results showed that corona wind has great enhancement effect on water evaporation rate, but its effectiveness gradually diminishes by increasing air flow velocity. Maximum enhancements were 7.3 and 3.6 for air velocities of 0.125 and 1.75 m/s, respectively.
Authors
Babak Kamkari
Msc Student Isfahan University of Technology
Ali Akbar Alemrajabi
Associate professor Isfahan University of Technology
Amir Tavakoli
Msc Student Isfahan University of Technology