Calculate the total heat loss from a house measures L×w in plan. The height of walls is H. The house has front and bake external doors, the area of each door is A1m2, and four glass windows with total area of A2m2 the U-value of building elements as the following:  Assume the specific heat capacity of air is CpJ/m3I and the air is changed once per hour.  The design internal temperature is T1°C and external temperature is T2°C. Assume the value of N as 0.6. Where  Qf =Σ (U×A×ΔT) watt Qv= (Cv×N×V×ΔT)÷3600 watt

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Calculate the total heat loss from a house measures L×w in plan. The height of walls is H. The house has front and bake external doors, the area of each door is A1m2, and four glass windows with total area of A2mthe U-value of building elements as the following: 

Assume the specific heat capacity of air is CpJ/m3I and the air is changed once per hour.  The design internal temperature is T1°C and external temperature is T2°C. Assume the value of N as 0.6. Where 

Qf =Σ (U×A×ΔT) watt

Qv= (Cv×N×V×ΔT)÷3600 watt

Building
U-value(W/m*k)
elements
External
0.488000289
walls
Windows 3.035467204
Doors
0.650960582
Roof
0.353399575
Floor
0.179312779
Transcribed Image Text:Building U-value(W/m*k) elements External 0.488000289 walls Windows 3.035467204 Doors 0.650960582 Roof 0.353399575 Floor 0.179312779
Problem 1
12 m
Building length =
%3D
28 m
Building WidthD
The height of walls =
4.933405786 m
2 doors: Area of each door =
4.411611533 m2
4 glass windows with total area =
27%
1165 J/m3k
Specific heat capacity of air =
0.6
Air is changed= N=
The design internal temperature%3D
26°C
42 °C
External temperature=
Transcribed Image Text:Problem 1 12 m Building length = %3D 28 m Building WidthD The height of walls = 4.933405786 m 2 doors: Area of each door = 4.411611533 m2 4 glass windows with total area = 27% 1165 J/m3k Specific heat capacity of air = 0.6 Air is changed= N= The design internal temperature%3D 26°C 42 °C External temperature=
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