Enhancement of pool boiling heat transfer using innovative non-ionic surfactant on a wire heater
| Autor: | Aarti Thorat, Sanket Savale, Abdul Najim, Sahil Patil, Vasudha More |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Fluid Flow and Transfer Processes
Aqueous solution Materials science 020209 energy Mechanical Engineering General Chemical Engineering Aerospace Engineering 02 engineering and technology 01 natural sciences 010305 fluids & plasmas Surface tension Boiling-point elevation Nuclear Energy and Engineering Pulmonary surfactant Chemical engineering Critical micelle concentration Boiling 0103 physical sciences Heat transfer 0202 electrical engineering electronic engineering information engineering Nucleate boiling |
| Zdroj: | Experimental Thermal and Fluid Science. 82:375-380 |
| ISSN: | 0894-1777 |
| DOI: | 10.1016/j.expthermflusci.2016.11.039 |
| Popis: | Saturated pool boiling of aqueous Nicotine (an innovative non-ionic surfactant) solutions, on a Nichrome wire heater was studied experimentally. Pool boiling experiments were started by boiling pure (distilled) water. After that, pure water was replaced by the aqueous surfactant solutions by 100, 500, 1000, 1500, 2000, 2500, 3000, 3500 and 4000 ppm on weight basis. The drop volume method was used to measure surface tension of aqueous solutions. The experiments of aqueous surfactant solutions were conducted under the same conditions of baseline (water) experiment. The boiling behaviour was studied by using high speed video technique. Pool boiling curves for various concentrations were obtained, and compared. Pool boiling performance was found to be enhanced significantly by the addition of Nicotine relative to pure water. An optimum level of enhancement was observed in solutions at 2500 ppm, which was critical micelle concentration (cmc) of the surfactant. No enhancement was observed in higher concentration solutions. It was observed that addition of Nicotine into pure water reduces its surface tension considerably which in turn enhances heat transfer. |
| Databáze: | OpenAIRE |
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