ASHRAE PSYCHROMETRIC CHART NO.1 ASHRAE NORMAL TEMPERATURE BAROMETRIC PRESSURE COPYRIGHT 1992 SEA LEVEL 101.325 kPa AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING ENGINEERS, INC. SENSIBLE HEAT TOTAL HEAT ENTHALPY 10 50 ENTHALPY h, kikg SATURATION TEMPERATURE C 90 25 26 100/ 30 DRY-BULB TEMPERATURE, "C 120 24 110 22 20 100 TEMPERATURE 12 0% RELATIVE HUMIDITY

ASHRAE PSYCHROMETRIC CHART NO.1 ASHRAE NORMAL TEMPERATURE BAROMETRIC PRESSURE COPYRIGHT 1992 SEA LEVEL 101.325 kPa AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING ENGINEERS, INC. SENSIBLE HEAT TOTAL HEAT ENTHALPY 10 50 ENTHALPY h, kikg SATURATION TEMPERATURE C 90 25 26 100/ 30 DRY-BULB TEMPERATURE, "C 120 24 110 22 20 100 TEMPERATURE 12 0% RELATIVE HUMIDITY

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter50: Commercial, Packaged Rooftop, Variable Refrigerant Flow, And Variable Air Volume Systems

Section: Chapter Questions

Problem 18RQ: Explain how carbon dioxide levels can be used to estimate the occupancy level in a particular area...

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Question

Air enters a cooling coil at the rate of 5000 cfm (2.4 m3/s) at 80 F (27 C). db, 68 F (20 C) wb and sea-level pressure. The air leaves the coil at 55 F (13

C) db, 54 F (12 C) wb. (a) Determine the SHF and the apparatus dew point.

(b) Compute the total and sensible heat transfer rates from the air.

ASHRAE PSYCHROMETRIC CHART NO.1
ASHRAE
NORMAL TEMPERATURE
BAROMETRIC PRESSURE
COPYRIGHT 1992
SEA LEVEL
101.325 kPa
AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING ENGINEERS, INC.
SENSIBLE HEAT
TOTAL HEAT
ENTHALPY
10
50
ENTHALPY h, kikg
SATURATION TEMPERATURE C
90
25
26
100/
30
DRY-BULB TEMPERATURE, "C
120
24
110
22
20
100
TEMPERATURE
12
0% RELATIVE HUMIDITY

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