STUDY OF THE THERMAL PERFORMANCE AND AIR-FLOW FEATURES OF A SOLAR AIR HEATER WITH EVACUATED TUBES
In the present paper, aspects related to the energy performance of a solar air heater comprising an array of dual-glass evacuated tubes using air as the working fluid, are investigated. Design parameters affecting the performance of the heater are the air flow-rate, the diameter and length ratios (insert tube/inner glass tube), the latter defining the discharge location, the flow configuration (series or parallel connection of tubes) etc.. Numerical simulations of flow and heat transfer within a single tube are performed for a selected configuration, giving insight into details of the flow and temperature fields, which are valuable in the pursuit of the optimal design of the geometric and physical parameters. Besides, efficiency curves for the air heater are obtained from experimental measurements at both cooperating laboratories.
E.Papanicolaou V.Belessiotis X.Li, Ζ.Wang
Solar & other Energy Systems Laboratory “Democritos National Center for Scientific Research Aghia P Solar Energy Laboratory Institute of Electrical Engineering, Chinese Academy of Sciences P.O.Box 270
国际会议
2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)
北京
英文
2007-09-18（万方平台首次上网日期，不代表论文的发表时间）