8. ) 0.88 0.90 0.92 VOLUME CUBIC METRE PER KILOGRAM DRY AIR 0.94 HUMIDITY RATIO (W)...

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8. ) 0.88 0.90 0.92 VOLUME CUBIC METRE PER KILOGRAM DRY AIR 0.94 HUMIDITY RATIO (W) GRAMS MOISTURE PER KILOGRAM DRY AIR 0.45 SENSIBLE HEAT TOTAL HEAT 0.36 0.40 8. ) 0.88 0.90 0.92 VOLUME CUBIC METRE PER KILOGRAM DRY AIR 0.94 HUMIDITY RATIO (W) GRAMS MOISTURE PER KILOGRAM DRY AIR 0.45 SENSIBLE HEAT TOTAL HEAT 0.36 0.40 ENTHALPY-BTU PER POUND OF 8 60 50 40 30 20 Prepared by: CENTER FOR APPLIED THERMODYNAMIC STUDIES, University of Idaho Chart C-9E RELATIVE H ) 130 050 120 030 110 100 90 010 80 70 50 ENTHALPY - BTU PER POUND OF DRY AIR 60 ) 20 ASHRAE PSYCHROMETRIC CHART NO. 1 NORMAL TEMPERATURE BAROMETRIC PRESSURE COPYRIGHT 1992 SEA LEVEL 101.325 kPa. AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING ENGINEERS, INC. 10.0 1.0 0.8 0.7 0.6 0.5 5.0 0.4 SENSIBLE HEAT = TOTAL HEAT ENTHALPY Ah HUMIDITY RATIO ZW 10 -00 1.0 1.5 -5.0 2.0 -20 4.0 0.0 -2.0 -1.0 10 ENTHALPY (h) KILOJOULES PER KILOGRAM DRY AIR SATURATION TEMPERATURE C 20 Prepared by: CENTER FOR APPLIED THERMODYNAMIC STUDIES, University of Idaho Chart C-8SI 20 % 25 90% 90 %08. 70% 60% DRY BULB TEMPERATURE C 60% 40% 100 30 7.27 In a psychrometric process, moist air at standard atmospheric pressure goes from state 1 of 15 C dry-bulb temperature and 10 C wet-bulb tempera- ture to state 2 of 35 C dry-bulb temperature and 10 C dew-point temperature. By the psychromet- ric chart, determine (a) the enthalpy-humidity ratio, q', for the process, and (b) the sensible-heat ratio, SHR, for the process. Notice that the SHR scale on the right side of the chart can be read with much greater accuracy than the one on the protractor to the left of the chart. 8. ) 0.88 0.90 0.92 VOLUME CUBIC METRE PER KILOGRAM DRY AIR 0.94 HUMIDITY RATIO (W) GRAMS MOISTURE PER KILOGRAM DRY AIR 0.45 SENSIBLE HEAT TOTAL HEAT 0.36 0.40 8. ) 0.88 0.90 0.92 VOLUME CUBIC METRE PER KILOGRAM DRY AIR 0.94 HUMIDITY RATIO (W) GRAMS MOISTURE PER KILOGRAM DRY AIR 0.45 SENSIBLE HEAT TOTAL HEAT 0.36 0.40 ENTHALPY-BTU PER POUND OF 8 60 50 40 30 20 Prepared by: CENTER FOR APPLIED THERMODYNAMIC STUDIES, University of Idaho Chart C-9E RELATIVE H ) 130 050 120 030 110 100 90 010 80 70 50 ENTHALPY - BTU PER POUND OF DRY AIR 60 ) 20 ASHRAE PSYCHROMETRIC CHART NO. 1 NORMAL TEMPERATURE BAROMETRIC PRESSURE COPYRIGHT 1992 SEA LEVEL 101.325 kPa. AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING ENGINEERS, INC. 10.0 1.0 0.8 0.7 0.6 0.5 5.0 0.4 SENSIBLE HEAT = TOTAL HEAT ENTHALPY Ah HUMIDITY RATIO ZW 10 -00 1.0 1.5 -5.0 2.0 -20 4.0 0.0 -2.0 -1.0 10 ENTHALPY (h) KILOJOULES PER KILOGRAM DRY AIR SATURATION TEMPERATURE C 20 Prepared by: CENTER FOR APPLIED THERMODYNAMIC STUDIES, University of Idaho Chart C-8SI 20 % 25 90% 90 %08. 70% 60% DRY BULB TEMPERATURE C 60% 40% 100 30 7.27 In a psychrometric process, moist air at standard atmospheric pressure goes from state 1 of 15 C dry-bulb temperature and 10 C wet-bulb tempera- ture to state 2 of 35 C dry-bulb temperature and 10 C dew-point temperature. By the psychromet- ric chart, determine (a) the enthalpy-humidity ratio, q', for the process, and (b) the sensible-heat ratio, SHR, for the process. Notice that the SHR scale on the right side of the chart can be read with much greater accuracy than the one on the protractor to the left of the chart.