Solar Engineering a Condensed Course

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182.3 IR Radiation Exchange Between Gray SurfacesDB3.8We identify two special (idealized) cases.(1) Exchange of radiation between two large parallel surfaces:QAσ ( T1− T2)=1/ ε + 1/ ε −11424[W/m 2 ] (2.3.1)(2) Exchange of radiation between a small object (A 1 ) and a large enclosure:Q4 41 1 1 1T2= ε A σ ( T − ) [W] (2.3.2)
192.4 Sky RadiationDB 3.9A solar collector exchanges radiative energy with the surroundings according to Equation2.3.2:4 4Q = ε Aσ( T − )(2.4.1)T SHere, TS= Ta⋅Ccorr.(2.4.2)where Ccorr.varies with the humidity of the of the air (≈ 1 when humid or cloudy, ≈ 0.9 whenclear and dry air). Usually, Ccorr.= 1 is a good enough approximation.
Page 2 and 3: 2Lars BromanSolar Engineering - A C
Page 4 and 5: 44.2 Optical Properties of Cover Sy
Page 6 and 7: 61.2 DefinitionsDB 1.5, 2.1Air mass
Page 8 and 9: 8normalbeam radiationθβhorizontal
Page 10 and 11: 101.5 ET Radiation on Horizontal Su
Page 12 and 13: 121.7 Estimation of Clear Sky Radia
Page 14 and 15: 141.9 Radiation on Sloped Surfaces
Page 16 and 17: 16Blackbody radiationAn ideal black
Page 20 and 21: 202.5 Radiation Heat Transfer Coeff
Page 22 and 23: 222.7 Wind Convection CoefficientsD
Page 24 and 25: 24ReflectanceReflectance ρ may be
Page 26 and 27: 26Chapter 4Radiation Transmission T
Page 28 and 29: 284.2 Optical Properties of Cover S
Page 30 and 31: 304.4 Monthly Average Absorbed Radi
Page 32 and 33: 32Problem: It is difficult both to
Page 34 and 35: 345.3 Collector Overall Heat Loss C
Page 36 and 37: 365.5 Collector CharacterizationDB
Page 38 and 39: 38In Europe, another expression is
Page 40 and 41: 40Chapter 6Semi Conductors and P-N
Page 42 and 43: 426.2 P-N Junctions(AP 2.5)Doping a
Page 44 and 45: 44Chapter 7The Behavior of Solar Ce
Page 46 and 47: 467.2 Effect of light(AP 3.1-3)The
Page 48 and 49: 48Temperature affects the other par
Page 50 and 51: 507.4 Cell properties(AP 2.2, 4.1-3
Page 52 and 53: 52Chapter 8Stand-Alone Photovoltaic
Page 54 and 55: 548.3 Household power systems(AP 9.
Page 56 and 57: 569.2 Photovoltaic power plants(AP
Page 58 and 59: Appendix 2Latitudes φ of Swedish C
Page 60 and 61: Appendix 4Monthly Average Days, Dat
Page 62 and 63: Appendix 6(reference Duffie-Beckman
Page 64 and 65: G(ω) = Uω + V sin ω 1.1.11In ord
Page 66 and 67: Appendix 8Answers to Selected Exerc

Solar Engineering a Condensed Course

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