Analysis of absorbed energy and efficiency of a solar flat plate collector

作者：Lenz Anderson Miguel^*; Melegari de Souza Samuel Nelson; Camargo Nogueira Carlos Eduardo; Gurgacz Flavio; Prior Maritane; Pazuch Felix Augusto

来源：Acta Scientiarum - Technology, 2017, 39(3): 279-284.

DOI：10.4025/actascitechnol.v39i3.29352

• flat plate collector
• electricity demand
• water heating system
• solar radiation
• pyranometer

The highest percentage in home electricity demands in Brazil lies with the water heating systems, where the electric shower has a great contribution in consumption. The use of solar thermal panels is an alternative to minimize the strain on the electrical system by heating water. Current study evaluates a water heating system built with materials commonly used in home constructions. The tested collector is a 1 m(2) flat plate. Experiments were conducted at the State University of Western Parana (UNIOESTE), campus Cascavel, Parana State, Brazil. Temperature data were collected by PT100 sensors and solar radiation was measured with a pyranometer, coupled to a CR-1000 datalogger, with readings and collection every 5 minutes for 1 year. Data collection and analysis showed that the system presented monthly efficiency ranging between 33.7 and 53.54%, and energy absorbed between 30.79 and 75.29 kWh m(-2). month. Results show the system is a good option for use in residential or rural water heating due to decrease in the electric bill.

• 出版日期2017-9