1. The following table shows TMY data (W/m) for Denver (latitude 39.8) on July 1 (n=182,...
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1. The following table shows TMY data (W/m) for Denver (latitude 39.8°) on July 1 (n=182, 8-=23.12°). [Note: A typical meteorological year (TMY) is a set of meteorological data with data values for every hour in a year for a given geographical location. The data are selected from hourly data in a longer time period (normally 10 years or more)] Calculate the expected irradiation on the following collector surfaces. Must show formula/process with each answer obtained. Must work on this word file. Keep the question parts and provide your answer below. Notice answers are given for some of them to help check your work. It is suggested to use Excel worksheet to solve the problems. Use data in the table for following parameters: GHI à DNI à DHI à TMY TMY THY TMY Time GHI DNI DHI a. South-facing, fixed 40° tilt, reflectance 0.2, solar noon. 5.00 6.00 92 334 40 68 7.00 273 608 8.00 476 744 93 667 820 114 b. South-facing, fixed 30° tilt, reflectance 0.2 solar noon. (ans: 1024 W/m²) 9.00 10.00 825 864 128 11.00 938 889 138 12.00 998 901 143 c. Horizontal, north-south axis, tracking collector (HNS), reflectance 0.2, at 11:00 am solar time. 13.00 1,000 901 143 14.00 944 890 138 15.00 835 866 129 16.00 637 677 172 455 608 134 17.00 18.00 172 51 154 19.00 67 104 49 d. Horizontal north-south axis, tracking collector (HNS), reflectance 0.2, at solar noon (ans: 1006 W/m²). e. Two-axis tracker, reflectance 0.2, at solar noon. f. Two-axis tracker, reflectance 0.2, at 11:00 am solar time. (ans. 1029 W/m²) g. One-axis tracker, vertical mount (VERT), tilt = 30° at 11:00 am solar time, reflectance 0.2. (ans: 1019 W/m²) h. One-axis tracker, vertical mount (VERT), tilt = 30° at solar noon, reflectance 0.2. 1. The following table shows TMY data (W/m) for Denver (latitude 39.8°) on July 1 (n=182, 8-=23.12°). [Note: A typical meteorological year (TMY) is a set of meteorological data with data values for every hour in a year for a given geographical location. The data are selected from hourly data in a longer time period (normally 10 years or more)] Calculate the expected irradiation on the following collector surfaces. Must show formula/process with each answer obtained. Must work on this word file. Keep the question parts and provide your answer below. Notice answers are given for some of them to help check your work. It is suggested to use Excel worksheet to solve the problems. Use data in the table for following parameters: GHI à DNI à DHI à TMY TMY THY TMY Time GHI DNI DHI a. South-facing, fixed 40° tilt, reflectance 0.2, solar noon. 5.00 6.00 92 334 40 68 7.00 273 608 8.00 476 744 93 667 820 114 b. South-facing, fixed 30° tilt, reflectance 0.2 solar noon. (ans: 1024 W/m²) 9.00 10.00 825 864 128 11.00 938 889 138 12.00 998 901 143 c. Horizontal, north-south axis, tracking collector (HNS), reflectance 0.2, at 11:00 am solar time. 13.00 1,000 901 143 14.00 944 890 138 15.00 835 866 129 16.00 637 677 172 455 608 134 17.00 18.00 172 51 154 19.00 67 104 49 d. Horizontal north-south axis, tracking collector (HNS), reflectance 0.2, at solar noon (ans: 1006 W/m²). e. Two-axis tracker, reflectance 0.2, at solar noon. f. Two-axis tracker, reflectance 0.2, at 11:00 am solar time. (ans. 1029 W/m²) g. One-axis tracker, vertical mount (VERT), tilt = 30° at 11:00 am solar time, reflectance 0.2. (ans: 1019 W/m²) h. One-axis tracker, vertical mount (VERT), tilt = 30° at solar noon, reflectance 0.2.
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Stats Data and Models
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Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock
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