ASHRAE 0.8 ASHRAE PSYCHROMETRIC CHART NO. 1 NORMAL TEMPERATURE BAROMETRIC PRESSURE: 29.921 INCHES OF MERCURY COPYRIGHT 1992 ASHRAE 0.6 0.5 -0.4 1500 10 SEA LEVEL 3 SENSIBLE HEAT TOTAL HEAT T ENTHALPY HUMIDITY RATIO = 11 20 1000 Ah AW 15 45 10 25 2.0 4.0 8.0 00 -8.0 4.0 -2.0 500 ENTHALPY BTU PER POUND OF DRY AIR 50 50 55 Prepared by: CENTER FOR APPLIED THERMODYNAMIC STUDIES, University of Idaho 80 SATURATION TEMPERATURE - F 60 60 55 65 5 15 45 75 60% 75 55 50 85: 85 WET BULB TEMPERATURE F 80 10% RELATIVE HUMIDITY 20 DRY BULB 60 CU. FT. RY AIR HUMIDITY RATIO-POUNDS MOISTURE PER POUND DRY AIR 028 026 024 022 020 99 60 55 90 50 018 016 2014 45 012 010 40 00 008 006 35 004 002 30 25 ENTHALPY-BTU PER POUND OF DRY AIR