Experimental Study on Natural Circulation Flow Rate am Heat Flux in Solar Heater System
National energy crisis has been triggering a few considerations related to the concept of energy optimization. One of them of this idea is to maximize the management of heat energy that comes from the sun (solar thermal). Application of the laws of nature in this case is the law of buoyancy and natural circulation in fluid flow has become an alternative for maximizing the use of energy. Natural circulation occurred when there are differences in temperature and altitude difference between hot side and cold side. The combination of solar thermal and natural circulation becomes the background of the preliminary research activities to investigate the ability of water flow in natural circulation systems. The study was conducted by constructing a solar thermal absorber (solar heater) and cooling tanks, installing instrumentation for temperature measurement (8 points) and conducting experiment. The results showed changes in temperature at the measurement points are determined and natural circulation flow was occurred. The data of temperature measurement was converted by calculation to obtain heat flux and water flow rate. The rate of flow in the system occurs in the range from 0.000082 to 0.000222 m/s. While the differences in flow rate in cold and hot areas reached 63.23％. Heat flux on the solar heater in average 5494 watt/m2 and 2387 watt/m2 in cooling tank.
flow rate heat flux solar natural circulation
Yogi Sirodz Gaos Mulya Juarsa Arief Goeritno Edi Marzuki Achmad Saleh Mauludin
Engineering and Devices for Energy Conversion Laboratory, Engineering Faculty, Bogor Ibn Khaldun University, Indonesia
国际会议
The 7th International Conference on Fluid and Thermal Energy Conversion(第七届流动技术与热能转化国际会议 FTEC 2011)
郑州
英文
439-447
2011-09-24（万方平台首次上网日期，不代表论文的发表时间）