ABSORPTANCE OF DIFFERENT LOCAL COATED SURFACES TO SOLAR RADIATION IN EGYPT | ||||
| Misr Journal of Agricultural Engineering | ||||
| Article 19, Volume 31, Issue 4, October 2014, Page 1563-1576 PDF (810.51 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/mjae.2014.98417 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| S.M. El-Gayar1; H.E. Gad2; H. H. Gad2 | ||||
| 1Agric. Eng. Res. Inst., A. R. C, Giza, 256, Egypt. | ||||
| 2Fac. of Eng., Mansoura University, 35516, Egypt. | ||||
| Abstract | ||||
| This study was carried out on the roof of the Thermal Eng. Laboratory, Mechanical power Dept., Fac. of Eng., Mansoura Univ., during selected clear days of April and one clear day of May, 2013. An experimental set up was designed and installed to measure the absorptance of 11 coated surfaces and one sheet without color. Then, the temperature of tested surfaces were calculated. The results showed that, G.I sheets coated with black bored (Bb), polish black (Pb), brown (Br), red (R), violet (V), green (G), blue (Blu), G.I. sheet without color, dark yellow (Yd), yellow (Y), silver (S) and white (W), are 0.92, 0.886, 0.888, 0.855, 0.852, 0.843, 0.830, 0.802, 0.788,0.785, 0.746, and 0.666 respectively. | ||||
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