Moist air enters a duct at 10oC, 80% relative humidity, and a volumetric flow rate of 81m3/min. The air is heated as it flows through the duct and exists at 34oC. No moisture is added or removed.Draw the cycle on the attached chart and determine:a) The rate of heat transfer in KJ/s;b) The relative humidity at the exit. ASHRAE Pshychrometric Chart No. 1 HA©1992 American Society of Heating, CRefrigerating and Air-conditioning Engineers, Inc.Sea Level0010.0Normal TemperatureBarometric Pressure: 101.325 kPa1.0-08-0.7-0.65.0 +0.54.00200.3SensibleheatTotal heatEnthalpyHumidity ratio30-C-AH₂,AH9.Ah[HAW121030€0.01.05015.20JAEnthalpy () kilojoules per kilogram dry airSaturation temperature C20280Ab209025(9096)-BA9608$960260%10050%40%Dry bulb temperature C3030%25 wet bulb temperature "C20963010% relative humidityV3F40per$EVpV28-26Kitapl2410120110100908070600.36-0.400.450.50-0.55-0.60-0.65-0.70-0.75-0.80-0.85-0.90-0.95-1.0Total haMoist air enters a duct at 10°C, 80%relative humidity, and a volumetricflow rate of 81m³/min. The air isheated as it flows through the ductand exists at 34°C. No moisture isadded or removed.Draw the cycle on the attached chartand determine:a) The rate of heat transfer in KJ/s;b) The relative humidity at the exit.

Given:Moist air inlet condition, Tdb,1=10oC, ϕ1=80%Air outlet temperature, Tdb,2=34oCFind:a The rate…

Answered: Moist air enters a duct at 10oC, 80%…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Question

Moist air enters a duct at 10oC, 80% relative humidity, and a volumetric flow rate of 81m3/min. The air is heated as it flows through the duct and exists at 34oC. No moisture is added or removed.

Draw the cycle on the attached chart and determine:

a) The rate of heat transfer in KJ/s;
b) The relative humidity at the exit.

ASHRAE Pshychrometric Chart No. 1 H
A
©1992 American Society of Heating, C
Refrigerating and Air-conditioning Engineers, Inc.
Sea Level
00
10.0
Normal Temperature
Barometric Pressure: 101.325 kPa
1.0
-08
-0.7
-0.6
5.0 +0.5
4.0
0
20
0.3
Sensible
heat
Total heat
Enthalpy
Humidity ratio
30
-C-
AH₂,
AH
9.
Ah
[
H
AW
12
10
30
€
0.0
1.0
50
15.
20
JA
Enthalpy () kilojoules per kilogram dry air
Saturation temperature C
20
2
80
Ab
20
90
25
(9096)
-BA
9608
$
9602
60%
100
50%
40%
Dry bulb temperature C
30
30%
25 wet bulb temperature "C
2096
30
10% relative humidity
V
3
F
40
per
$
E
V
p
V
28-
26
Kitapl
24
10
120
110
100
90
80
70
60
0.36
-0.40
0.45
0.50
-0.55
-0.60
-0.65
-0.70
-0.75
-0.80
-0.85
-0.90
-0.95
-1.0
Total ha
Moist air enters a duct at 10°C, 80%
relative humidity, and a volumetric
flow rate of 81m³/min. The air is
heated as it flows through the duct
and exists at 34°C. No moisture is
added or removed.
Draw the cycle on the attached chart
and determine:
a) The rate of heat transfer in KJ/s;
b) The relative humidity at the exit.

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