Ding, Xiang, Gao, Wenfeng, Liu, Tao, Lin, Wenxian, and Li, Ming (2013) Study on operational performance of a solar water heater hanged on the balcony wall under different inclinations in summer. Acta Energiae Solaris Sinica, 34 (11). pp. 1895-1902.

PDF (Published Version) - Published Version Restricted to Repository staff only

 

8

Abstract

An experimental rig was set up in Kunming for an indirect forced-circulated flat-plate solar water heater hanged on the balcony wall with separate pressure bearing and adjustable inclinations. In this paper, a solar radiation model has been established to estimate the total solar radiation incident on the inclined collector surface, the operational performance of such a solar water heater under different inclinations was measured and analyzed under clear sky conditions in Kunming, and the relations between the system's temperature rise and heat gain and the solar radiation incident on the collector surface were obtained under different inclinations. The results show that in general the system has an excellent performance, outperforming the relevant state standard requirements; under different inclinations, the system's average daily thermal efficiency does not vary considerably and the transient efficiency decreases with time in a specific day; the temperature stratification of the hot water storage tank with separate pressure bearing is not significant. To have a larger heat gain, it is recommended that in Kunming the inclination for the solar water heater hanged on the balcony wall shall be no more than 75°.

Actions (Repository Staff Only)

Item Control Page