The air handling unit of an air-conditioning plant supplies a total of 4500 cmm of dryair which comprsse by weight 20% fresh air at 40°C DBT and 27 C WBT and 80%recirculated air at 25°C DBT and 50% RH. The air leaves the cooling coil at 13°Csaturated state. Calculate the total cooling load and room heat gain. Take Sp. volumeof air entcring the cooling coil as 0.869 m/kg d.a. Given:Condition DBTWBTRHSp. HumidityEnthalpy°Cg.w.v.kg d.a.kJ/kg d.a.outside402717.285AYCinside255010.050.81009.437ADP13JADP-Apparatus Dewpoint]

Answered: 0% fresh air at 40°C DBT an nd 50% RH.…

Engineering

Mechanical Engineering

0% fresh air at 40°C DBT an nd 50% RH. The air leaves ti Cal cooling load and room heat

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Thermodynamic Relations

Thermodynamics is the division of physics that deals with the transfer of any kind of energy, whether it be heat, temperature, or work, from one object to another.

Question

The air handling unit of an air-conditioning plant supplies a total of 4500 cmm of dry
air which comprsse by weight 20% fresh air at 40°C DBT and 27 C WBT and 80%
recirculated air at 25°C DBT and 50% RH. The air leaves the cooling coil at 13°C
saturated state. Calculate the total cooling load and room heat gain. Take Sp. volume
of air entcring the cooling coil as 0.869 m/kg d.a. Given:
Condition DBT
WBT
RH
Sp. Humidity
Enthalpy
°C
g.w.v.kg d.a.
kJ/kg d.a.
outside
40
27
17.2
85
AYC
inside
25
50
10.0
50.8
100
9.4
37
ADP
13
JADP-Apparatus Dewpoint]

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