Heating Systems Design of Hot Water And Steam Heating Apparatus
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A = sectional area of duct in inches. H = height of duct in feet. T = average temperature of air in duct. T = temperature of external air.
TABLE X. VOLUME OF Am IN FEET DELIVERED PER SQUARE INCH OF DUCT AREA PER HOUR. Calculated by Formula 33.
Temp, of external air, Fahr.
20 40 30 | 40 50 Average room temp. , Fahr, 70 70 70 60 | 60 60 Height of duct in feet.
Volume of air in cub. Feet, per square inch of duct area per hour.
5 69 58 44 44 36 25 10 98 82 62 63 51 35 20 140 115 87 88 72 50 30 171 ...141 107 108 88 61 40 197 163 124 125 100 71 50 220 182 138 140 113 79 60 242 200 152 153 124 87 70 261 216 164 165 134 94 80 279 231 175 177 143 100 1 2 3 4 5 6 7 208 DESIGN OF HOT-WATER & STEAM HEATING APPARATUS Example 19. Assume the heat lost by the following is required. Eoom 14 feet high, southern exposure, external temperature 30 F. , and internal 60 F. There is a ventilat- ing stack 40 feet high having a cross-sectional area of 110 square inches with corresponding air-inlet duct. Take the temperature difference for estimating capacity of outlet shaft as 20 F.
What to read after Heating Systems Design of Hot Water And Steam Heating Apparatus?
You can find similar books in the "Read Also" column, or choose other free books by F W Raynes to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
A = sectional area of duct in inches. H = height of duct in feet. T = average temperature of air in duct. T = temperature of external air.
TABLE X. VOLUME OF Am IN FEET DELIVERED PER SQUARE INCH OF DUCT AREA PER HOUR. Calculated by Formula 33.
Temp, of external air, Fahr.
20 40 30 | 40 50 Average room temp. , Fahr, 70 70 70 60 | 60 60 Height of duct in feet.
Volume of air in cub. Feet, per square inch of duct area per hour.
5 69 58 44 44 36 25 10 98 82 62 63 51 35 20 140 115 87 88 72 50 30 171 ...141 107 108 88 61 40 197 163 124 125 100 71 50 220 182 138 140 113 79 60 242 200 152 153 124 87 70 261 216 164 165 134 94 80 279 231 175 177 143 100 1 2 3 4 5 6 7 208 DESIGN OF HOT-WATER & STEAM HEATING APPARATUS Example 19. Assume the heat lost by the following is required. Eoom 14 feet high, southern exposure, external temperature 30 F. , and internal 60 F. There is a ventilat- ing stack 40 feet high having a cross-sectional area of 110 square inches with corresponding air-inlet duct. Take the temperature difference for estimating capacity of outlet shaft as 20 F.
What to read after Heating Systems Design of Hot Water And Steam Heating Apparatus?
You can find similar books in the "Read Also" column, or choose other free books by F W Raynes to read onlineMoreLess
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