You have been asked to calculate some performance characteristics of a new solar collector on the...
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You have been asked to calculate some performance characteristics of a new solar collector on the market. You have some of the details for it as shown below. a) Compute the effective transmittance absorptance product (ra eff) from normal to 70 incident radiation for a flat plate collector with the following characteristics Cover : low iron glass 0.003 m thick, extinction coefficient (K) 3.0 m-1 Note: You need to estimate the diffuse reflectance based on the lecture notes Absorber Plate short wavelength absorptance 0.95 (no angular dependence). = = b) Calculate the incident angle modifier, Kra, using equation OE9 c) Given the overall heat loss coefficient has been calculated to be 5W/mK, graph the efficiency curves (n vs AT/G) for angles of incidence of zero and 70. d) What is the stagnation temperature for both cases with irradiance of 1200W/m when the ambient temperature is 35C. You have been asked to calculate some performance characteristics of a new solar collector on the market. You have some of the details for it as shown below. a) Compute the effective transmittance absorptance product (ra eff) from normal to 70 incident radiation for a flat plate collector with the following characteristics Cover : low iron glass 0.003 m thick, extinction coefficient (K) 3.0 m-1 Note: You need to estimate the diffuse reflectance based on the lecture notes Absorber Plate short wavelength absorptance 0.95 (no angular dependence). = = b) Calculate the incident angle modifier, Kra, using equation OE9 c) Given the overall heat loss coefficient has been calculated to be 5W/mK, graph the efficiency curves (n vs AT/G) for angles of incidence of zero and 70. d) What is the stagnation temperature for both cases with irradiance of 1200W/m when the ambient temperature is 35C.
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Related Book For
Financial and Managerial Accounting
ISBN: 978-1285078571
12th edition
Authors: Carl S. Warren, James M. Reeve, Jonathan Duchac
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