دوره 4، شماره 1 - ( 12-1392 )
جلد 4 شماره 1 صفحات 653-646 |
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Ghasemian, Keshavarz, Sotodeh. Experimental Investigation of Surface Roughness Effect on Flow Boiling in Internal Combustion Engine Water Jacket . ASE 2014; 4 (1) :646-653
URL: http://www.iust.ac.ir/ijae/article-1-252-fa.html
URL: http://www.iust.ac.ir/ijae/article-1-252-fa.html
Experimental Investigation of Surface Roughness Effect on Flow Boiling in Internal Combustion Engine Water Jacket . Automotive Science and Engineering. 1392; 4 (1) :646-653
چکیده: (21504 مشاهده)
The subjects of heat transfer and cooling system are very important topics in the Internal Combustion Engines (ICE). In modern cooling systems, low weight, small size and high compactness are the critical designing criteria that requires heat transfer enhancement. Boiling phenomenon which is occurred in the water jacket of the ICE is one of the methods to increase heat transfer in the coolant system of an ICE. A research has been shown that parameters such as material, temperature, and roughness of the heated surface have direct effect on the rate of heat transfer in a boiling phenomenon. In this paper the potential of boiling phenomenon and the effect of the surface roughness on the amount of heat flux removed by the coolant flow in the engine water jacket is investigated experimentally. For this purpose the experiments was carried out in three different flow velocities and also three different surface roughnesses. Results show that the boiling and roughness of a hot surface will increase the heat removal significantly.
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