A NEW DYNAMIC TEST METHOD OF THERMAL PERFORMANCE FOR EVACUATED TUBE SOLAR COLLECTOR
In the present paper, the thermal performance of evacuated tube solar collector is investigated. A new dynamic model for testing solar collector is analyzed. The model is derived from thermal energy balance and solved by transfer function. In the model the collector is like as a system, the outlet temperature ( Tfo ) is the system output, the other variables: the inlet temperature ( Tfi ), the ambient temperature ( Ta ) and the solar irradiance ( I ) on aperture plane per unit area are the system inputs. By the measurements of Tfo, Tfi, Ta and I the characteristic parameters of the transfer function can be obtained. And then the system output ( Tfo) can be calculated by the transfer function and the system inputs. The results on the basis of the new method are very close to actual measured values when the system inputs are highly variable.
Bowei Wang Zhifeng Wang Xing Li Yi Ruan
Institute of Electrical Engineering, CAS Beijing 100080, China Himin Solar Energy Group Co.Ltd Dezhou City, China 253092
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）