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How much more air conditioning supply air will be needed in a room with a 50 sq ft single strength, clear window facing north compared with an identical room facing east? Assume supply air temperature of 55 F; room temperature 75 F. Hint: Select the peak SHGF in July or August at any time. Assume Shading Coefficient of single strength clear glass is 1 if needed.

How much more air conditioning supply air will be needed in a room with a 50 sq ft single strength, clear window facing north compared with an identical room facing east? Assume supply air temperature of 55 F; room temperature 75 F. Hint: Select the peak SHGF in July or August at any time. Assume Shading Coefficient of single strength clear glass is 1 if needed.

Appl Of Ms Excel In Analytical Chemistry
Appl Of Ms Excel In Analytical Chemistry
2nd Edition
ISBN:9781285686691
Author:Crouch
Publisher:Crouch
Chapter4: Least-squares And Calibration Methods
Section: Chapter Questions
Problem 7P
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How much more air conditioning supply air will be needed in a room with a 50 sq ft single strength, clear window facing north compared with an identical room facing east? Assume supply air temperature of 55 F; room temperature 75 F. Hint: Select the peak SHGF in July or August at any time. Assume Shading Coefficient of single strength clear glass is 1 if needed.

 

 

2.28 How much more air conditioning supply air will be needed in a room with a 50 sq ft single strength, clear window facing north compared with an identical room facing east? Assume supply air temperature of 55°F; room temperature 75°F. Hint: select the peak SHGF in July or August at any time Assume Shading Coefficient of single strength clear glass is 1 if needed. TABLE 2-15A (Continued) Solar Time, Solar Heat Gain Factors, Btuh/sq ft Solar Time, A.M. Altitude Azimuth Solar Position Direct Normal Irradiation, Btuh/sq ft N Date NE E SE SW W NW Horizontal P.M. Half-day Totals 112 310 849 1100 692 218 112 112 764 Apr 21 7 7.4 98.9 89 11 72 88 52 4 4 4 11 18.9 89.5 207 253 275 16 141 201 143 16 14 14 14 61 8 30.3 79.3 22 128 225 189 41 21 21 21 124 41.3 67.2 26 80 203 204 83 26 26 26 177 10 51.2 51.4 286 30 37 153 194 121 32 30 30 218 58.7 61.6 11 29.2 292 33 34 81 161 146 52 33 33 244 12 0.0 294 33 33 36 108 155 108 36 33 253 Half-day Totals 153 509 969 1003 489 196 146 145 962 May 21 1.9 114.7 1 12.7 105.6 143 35 128 141 71 10 10 10 10 30 7 24.0 96.6 216 28 165 209 131 20 18 18 18 87 8 35.4 87.2 249 27 149 220 164 29 25 25 25 146 46.8 57.5 76.0 267 31 105 197 175 53 30 30 30 196 10 60.9 277 34 54 148 163 130 40 83 35 34 34 234 66.2 282 284 11 37.1 36 38 81 105 42 36 36 258 12 70.0 0.0 37 37 82 112 82 40 37 265 Half-day Totals 203 643 1002 874 356 194 171 170 1083 June 21 5 117.3 21 21 10 47 142 4.2 20 1 1 1 2 14.8 108.4 154 151 70 12 12 12 20 20 12 39 7 26.0 99.7 215 37 172 206 122 21 20 97 8 37.4 90.7 246 29 156 215 152 192 161 145 148 29 26 26. 26 153 48.8 80.2 65.8 33 113 62 9 262 45 31 31 36 35 31 201 10 59.8 272 35 69 35 237 11 69.2 41.9 276 37 40 80 116 88 41 37 37 260 12 73.5 0.0 278 38 38 41 71 95 71 41 38 267 Half-day Totals 242 714 1019 810 311 197 181 180 1121 July 21 2.3 115.2 2 1 13.1 106.1 137 37 125 137 68 10 10 10 10 31 7 24.3 97.2 208 30 163 204 127 20 19 19 26 26 19 26 88 35.8 47.2 8 87.8 241 28 148 216 160 29 145 76.7 259 32 106 194 170 52 31 31 31 194 57.9 66.7 10 61.7 269 35 146 159 81 127 56 80 36 35 35 231 255 282 11 37.9 274 37 39 102 42 37 37 12 70.6 0.0 276 38 38 41 80 109 80 41 38 Half-day Totals 211 645 986 850 347 197 177 176 1074 Aug 21 7.9 99.5 80 12 67 82 48 11 19.3 90.0 79.9 67.9 191 17 135 191 135 17 15 15 15 62 122 8. 30.7 236 259 23 28 126 216 180 40 22 22 22 41.8 82 197 196 79 28 28 28 174 10 51.7 52.1 271 32 40 149 187 116 34 32 52 34 32 213 11 50.3 62.3 29.7 277 34 35 35 81 156 140 34 238 12 0.0 279 35 38 105 149 105 38 35 247 76543212 765438212 O 5432 12 6543212 76543212
Transcribed Image Text:2.28 How much more air conditioning supply air will be needed in a room with a 50 sq ft single strength, clear window facing north compared with an identical room facing east? Assume supply air temperature of 55°F; room temperature 75°F. Hint: select the peak SHGF in July or August at any time Assume Shading Coefficient of single strength clear glass is 1 if needed. TABLE 2-15A (Continued) Solar Time, Solar Heat Gain Factors, Btuh/sq ft Solar Time, A.M. Altitude Azimuth Solar Position Direct Normal Irradiation, Btuh/sq ft N Date NE E SE SW W NW Horizontal P.M. Half-day Totals 112 310 849 1100 692 218 112 112 764 Apr 21 7 7.4 98.9 89 11 72 88 52 4 4 4 11 18.9 89.5 207 253 275 16 141 201 143 16 14 14 14 61 8 30.3 79.3 22 128 225 189 41 21 21 21 124 41.3 67.2 26 80 203 204 83 26 26 26 177 10 51.2 51.4 286 30 37 153 194 121 32 30 30 218 58.7 61.6 11 29.2 292 33 34 81 161 146 52 33 33 244 12 0.0 294 33 33 36 108 155 108 36 33 253 Half-day Totals 153 509 969 1003 489 196 146 145 962 May 21 1.9 114.7 1 12.7 105.6 143 35 128 141 71 10 10 10 10 30 7 24.0 96.6 216 28 165 209 131 20 18 18 18 87 8 35.4 87.2 249 27 149 220 164 29 25 25 25 146 46.8 57.5 76.0 267 31 105 197 175 53 30 30 30 196 10 60.9 277 34 54 148 163 130 40 83 35 34 34 234 66.2 282 284 11 37.1 36 38 81 105 42 36 36 258 12 70.0 0.0 37 37 82 112 82 40 37 265 Half-day Totals 203 643 1002 874 356 194 171 170 1083 June 21 5 117.3 21 21 10 47 142 4.2 20 1 1 1 2 14.8 108.4 154 151 70 12 12 12 20 20 12 39 7 26.0 99.7 215 37 172 206 122 21 20 97 8 37.4 90.7 246 29 156 215 152 192 161 145 148 29 26 26. 26 153 48.8 80.2 65.8 33 113 62 9 262 45 31 31 36 35 31 201 10 59.8 272 35 69 35 237 11 69.2 41.9 276 37 40 80 116 88 41 37 37 260 12 73.5 0.0 278 38 38 41 71 95 71 41 38 267 Half-day Totals 242 714 1019 810 311 197 181 180 1121 July 21 2.3 115.2 2 1 13.1 106.1 137 37 125 137 68 10 10 10 10 31 7 24.3 97.2 208 30 163 204 127 20 19 19 26 26 19 26 88 35.8 47.2 8 87.8 241 28 148 216 160 29 145 76.7 259 32 106 194 170 52 31 31 31 194 57.9 66.7 10 61.7 269 35 146 159 81 127 56 80 36 35 35 231 255 282 11 37.9 274 37 39 102 42 37 37 12 70.6 0.0 276 38 38 41 80 109 80 41 38 Half-day Totals 211 645 986 850 347 197 177 176 1074 Aug 21 7.9 99.5 80 12 67 82 48 11 19.3 90.0 79.9 67.9 191 17 135 191 135 17 15 15 15 62 122 8. 30.7 236 259 23 28 126 216 180 40 22 22 22 41.8 82 197 196 79 28 28 28 174 10 51.7 52.1 271 32 40 149 187 116 34 32 52 34 32 213 11 50.3 62.3 29.7 277 34 35 35 81 156 140 34 238 12 0.0 279 35 38 105 149 105 38 35 247 76543212 765438212 O 5432 12 6543212 76543212
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