Program by W.G. ACKER and N.E. STRAND PLANT LOCATION SYSTEM DESCRIPTION AIR FLOW AT THE END OF THE DUCT RUN SYSTEM IDENTIFICATION NUMBER 13 April 2011 12:02 PM ASHRAE CALCULATION ELEVATION ABOVE SEA LEVEL 0. FEET BAROMETRIC AIR PRESSURE 29.9210 Inches Hg. DUCTWORK OR GAGE PRESSURE 0.0000 Inches Hg TOTAL ABSOLUTE PRESSURE (32 F) 29.9210 Inches Hg. TOTAL ABSOLUTE PRESSURE 14.6958 Psia DRY BULB AIR TEMPERATURE 55.2302 F WET BULB TEMPERATURE 54.4374 F DEW POINT TEMPERATURE 48.9526 F ADIABATIC SATURATION TEMPERATURE 53.4375 F RELATIVE HUMIDITY 79.3325 % PERCENT SATURATION 79.0888 % ACTUAL AIR FLOW 2,468.2381 ACFM FAN ENGINEERING-STANDARD AIR FLOW 2,523.8147 SCFM CAGI COMPRESED AIR-STANDARD AIR FLOW 2,552.3129 CAGI SCFM DESICCANT INDUSTRY DSCFM (dry std. ft3/min) 2,505.4381 DSCFM HUMIDITY RATIO 0.007335 lbs w.v./lb da HUMIDITY RATIO GRAINS 51.3430 grns w.v./lb da SATURATION HUMIDITY RATIO (Ws) 0.009274 lbs w.v./lb da SATURATION HUMIDITY RATIO GRAINS (Ws) 64.9181 grns w.v./lb da SAT. HUMIDITY RATIO AT WET BULB TEMP. (Ws*) 0.009006 lb w.v./lb da SAT. HUMIDITY RATIO AT ADIAB. SAT. TEMP. (Ws) 0.008678 lbs w.v./lb da PARTIAL PRESS OF DRY AIR IN THE MIX (Pa) 29.572268 Inches Hg. PARTIAL PRESS OF WATER VAPOR IN THE MIX (Pw) 0.348732 Inches Hg. PARTIAL PRESS WATER VAPOR SAT. AT W.B. (Px) 0.411726 Inches Hg. PRESS: SAT. PURE WATER AT DRY BULB (Pws) 0.439582 Inches Hg. VAPOR PRESS: WATER IN MOIST AIR AT SAT. (Ps) 0.439582 Inches Hg. VAPOR PRESS AT ADIABATIC TEMPERATURE. 0.411726 Inches Hg MOLE FRACTION OF DRY AIR-IN THE MIX. (Xa) 0.988345 moles da/mole mix MOLE FRACTION OF WATER-IN THE MIX. (Xw) 0.011655 moles wtr/mole mix MOLE FRACTION OF WATER VAPOR AT SAT. (Xws) 0.014691 mol vap/mol sat mix GAS CONSTANT OF DRY AIR IN THE MIXTURE (Ra) 52.9635 GAS CONSTANT FOR WATER VAPOR (MIXTURE) (Rw) 0.6246 GAS CONSTANT MIXTURE (R = Ra + Rw) 53.5881 MOLECULAR WEIGHT OF DRY AIR IN THE MIX. 28.6269 lb mass/mole MOLECULAR WEIGHT OF THE WATER VAPOR (MIXTURE) 0.2100 lb mass/mole MOLECULAR WEIGHT OF THE MIX. 28.8369 lb mass/mole DENSITY OF THE AIR MIXTURE 0.076689 lb wa/ft3 wa AIR SPECIFIC VOLUME 13.1354 ft3 wa/lb da MASS FLOW OF DRY AIR 11,274.4717 lbs dry air/hr MASS FLOW OF WATER VAPOR 82.6950 lbs wtr vap/hr WATER VAPOR FLOW @ 100 F 0.1652 gpm COMBINED MASS FLOW OF DRY AIR & WATER VAPOR 11,357.1667 lbs wet air/hr ENTHALPY OF THE DRY AIR IN THE MIXTURE 13.2436 Btu/lb da ENTHALPY OF WATER VAPOR IN THE MIXTURE 7.9650 Btu/lb da TOTAL AIR MIXTURE ENTHALPY 21.2085 Btu/lb da ENTHALPY OF SATURATED OR SUPERHEATED STEAM (hg) 1,085.9264 Btu/lb SENSIBLE HEAT FLOW 149,314.41 Btu/hr LATENT HEAT FLOW 89,800.68 Btu/hr TOTAL HEAT FLOW 239,115.09 Btu/hr DRY AIR VOLUME FLOW (dry cubic feet / min) 2,439.4706 DCFM WATER VAPOR VOLUME FLOW 28.7675 CFM ACFM (cubic feet of wet air/min) 2,468.2381 ACFM