Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Optimal slope angle selection of an evacuated tube collector for domestic solar water heating
A pressurized system utilizing evacuated tube collectors with internal heat pipes was investigated for the production of hot service-water for domestic use during all seasons in Pretoria, South Africa. The investigation focused on the prediction of seasonal hourly performance trends and the maximum thermal performance at the static optimal slope angle. This study was accomplished by developing the system’s theoretical performance model which was solved numerically using Engineering Equation Solver (EES). Results show the thermal performance trend changes during the seasons depending on the slope angle. Optimal performance parameters that influence the collector overall performance, depending on the water consumption of the occupants, were obtained and presented. The maximum performance in the summer was achieved at a slope angle of 25° and in winter the maximum performance was shown to exist at an angle of 40°. In a 20 receiver tube collector system, maximum performance was in September, reaching an outlet temperature of 103.98 °C and useful heat rate of 1 919.85 W.
Optimal slope angle selection of an evacuated tube collector for domestic solar water heating
A pressurized system utilizing evacuated tube collectors with internal heat pipes was investigated for the production of hot service-water for domestic use during all seasons in Pretoria, South Africa. The investigation focused on the prediction of seasonal hourly performance trends and the maximum thermal performance at the static optimal slope angle. This study was accomplished by developing the system’s theoretical performance model which was solved numerically using Engineering Equation Solver (EES). Results show the thermal performance trend changes during the seasons depending on the slope angle. Optimal performance parameters that influence the collector overall performance, depending on the water consumption of the occupants, were obtained and presented. The maximum performance in the summer was achieved at a slope angle of 25° and in winter the maximum performance was shown to exist at an angle of 40°. In a 20 receiver tube collector system, maximum performance was in September, reaching an outlet temperature of 103.98 °C and useful heat rate of 1 919.85 W.
Optimal slope angle selection of an evacuated tube collector for domestic solar water heating
Coetzee, Rigardt Alfred (Autor:in) / Mwesigye, Aggrey (Autor:in) / Huan, Zhongjie (Autor:in)
23.03.2017
doi:10.17159/2413-3051/2017/v28i1a1621
Journal of Energy in Southern Africa; Vol. 28 No. 1 (2017): Journal of Energy in Southern Africa. February; 104-119 ; 2413-3051 ; 1021-447X
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Evacuated tube solar collector with multifunctional absorber layers
| British Library Online Contents | 2017
Evacuated tube solar collector with multifunctional absorber layers
| British Library Online Contents | 2017