(10-23)The shown four offices are to be heated by warm air heating system. The following data are given: The calculated heating loads for the offices are: Q=3,465 W, Q₂ = 2,755 w, Q, = 2,615 W and Q = 2,895 W. Inside design temperature is 20°C. Warm air temperature and velocity leaving the furnace are 55°C and 5 m/s, respectively. Density and specific heat of air are 1.15 kg/m³ and 1.005 kJ/kg-K, respectively. Calculate the followings: (a) Supply volumetric flow rate of air to each office.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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(10-23) The shown four offices are to be heated by warm air heating system.
The following data are given:
The calculated heating loads for the offices are:
Q₁ = 3,465 W, Q₂ = 2,755 W, 3 = 2,615 W and Q=2,895 W.
Inside design temperature is 20°C.
Warm air temperature and velocity leaving the furnace are 55°C and 5 m/s, respectively.
Density and specific heat of air are 1.15 kg/m³ and 1.005 kJ/kg-K, respectively.
Calculate the followings:
(a) Supply volumetric flow rate of air to each office.
(b) Diameters of duct system for all offices using equal pressure drop method.
(c) Pressure drop of the longest duct run.
(d) Select a fan type and model to satisfy the above requirements. State the capacity and
pressure rise of the selected fan.
25
A
Furnace
Room
-2.0-
-4.0-
B
Office 1
2.5
-3.0-
C
Office 2
-3.0-
D
Office 3
*Dimensions in meters
-3.0-
E
Office 4
3.5
Transcribed Image Text:(10-23) The shown four offices are to be heated by warm air heating system. The following data are given: The calculated heating loads for the offices are: Q₁ = 3,465 W, Q₂ = 2,755 W, 3 = 2,615 W and Q=2,895 W. Inside design temperature is 20°C. Warm air temperature and velocity leaving the furnace are 55°C and 5 m/s, respectively. Density and specific heat of air are 1.15 kg/m³ and 1.005 kJ/kg-K, respectively. Calculate the followings: (a) Supply volumetric flow rate of air to each office. (b) Diameters of duct system for all offices using equal pressure drop method. (c) Pressure drop of the longest duct run. (d) Select a fan type and model to satisfy the above requirements. State the capacity and pressure rise of the selected fan. 25 A Furnace Room -2.0- -4.0- B Office 1 2.5 -3.0- C Office 2 -3.0- D Office 3 *Dimensions in meters -3.0- E Office 4 3.5
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