Experimental Enhancement of Solar Water Heater Performance Using Carbon Nanotube Coatings and Enclosure Modifications

Résumé fourni par la source

The current study is an experimental research that aims at exploring the ways in which an evacuated tube solar collector (ETSC) can be thermally enhanced by varying absorber material and structural insulations.These were tested with nine variations in the outdoor conditions, and these conditions were aluminum plates, black-painted plates, absorbers, carbon nanotube (CNT)-coated plates, enclosure boxes, and adjustable reflectors at 45° and 90° .Multi-point temperature revealing of a 300 L storage tank was conducted to determine the performance of things in terms of thermal performance of the storage tank in daily cycles of operation.Placing a CNT-coated plate of aluminum into an insulated enclosure box was the most thermally improved, as it was able to increase the temperature the most, 64.24 ℃ over the baseline version.Enclosed plates, which were black painted, showed a 47.81 ℃ increase in temperature, whereas the aluminum plates showed a moderate improvement (20.71 ℃).Mirror forms demonstrated uneven performance because of the shading effect, with maximum gains of 30.44 ℃ at 90° and just 4.80 ℃ at 45° .Findings show that the reduction of convective heat loss and absorber surface properties are the most important elements that affect the efficiency of the system, as compared to reflector position values.The CNT enclosure framework comprises CNT enclosure design, which represents a viable and economical design strategy towards facilitating domestic solar water heating in fluctuating climatic conditions.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.