Solar Water Heating by Two-Phase Thermosyphon Working with Methanol
Experiments are conducted with a two-phase loop thermosyphon in which a flat-plate solar collector acts as an evaporator and a water tank contains the condensing section of the thermosyphon.Methanol boils at the flat-plate collector, condenses at the water tank transferring latent heat to water,and goes back to the flat-plate collector to be boiled again in order to repeat the cycle. The thermosyphon system is installed at BUET, Dhaka, Bangladesh (23.7~ north latitude) where the average solar radiation is in the range of 3.5-5 kWh/m2 per day. For each of the experiments during May 2003, absorber plate temperatures at different locations, coolant tube temperature, inlet / outlet temperatures of working fluid, water temperature at the water tank and above all solar insolation at a regular interval were recorded and compared with conventional flat-plate collector. From the collected data, performance parameters such as instantaneous collector efficiency and heat removal factors are calculated and analyzed.
建筑空调 建筑节能 清洁能源 太阳能技术
MA Islam MAR Sarkar MAR Khan
Department of Mechanical Engineering BUET,Dhaka-1000,Bangladesh
国内会议
北京
英文
39-47
2005-05-25（万方平台首次上网日期，不代表论文的发表时间）