Studi Eksperimental Pengaruh Bilangan Weber Terhadap Efektivitas Pendinginan pada Multiple Droplets yang Menumbuk Permukaan Stainless Steel pada Rejim Natural Convection
Penulis/Author
Indro Pranoto, Ph.D. (1); Prof. Dr. Eng. Ir. Deendarlianto, S.T., M.Eng. (2); Prof. Ir. Samsul Kamal, M.Sc., Ph.D (3)
Tanggal/Date
2016
Abstrak/Abstract
Multiple droplets are a drop of water that continuously dropped on a surface. Spray cooling is an application of the use of droplet on a cooling system. Spray coolings are usually used in a cooling system of the nuclear reaction of power plant, material quenching and other electronic devices. In this study, correlations between Weber number and cooling effectiveness that happens in spray cooling are investigated and discussed. Visualization process is used to find maximum spreading of droplet impingement. Image processing technique is used to capture the data from the sequential images from a high-speed camera. Variable such as surface temperature and Weber number are to be studied for its correlation to cooling effectiveness. Then, the correlation between Weber number and temperature decrease rate is to be analyzed. The result of this study shows that Weber number affect cooling effectiveness. That is cooling effectiveness increase as Weber number increase. Whereas temperature decrease rate of hot surface impinged by droplet is also affected by Weber Number. Which is temperature decrease rate of hot surface increase as Weber number increase.
