A typical exterior frame wall (made up of 60 mm × 120 mm studs) of a housecontains the materials as shown. For most residential buildings, the inside room temperature is kept around 21° C. Assuming an outside temperature of −6° C and an exposed area of 16 m2 , we are interested in determining the heat loss through the wall. ТABLE 11.5Thermal Resistance of Wall MaterialsItemsThermal Resistancem² K/W1. Outside film resistance0.029(winter, 24 kmph wind)0.138| 2. Siding, wood (15 mm x 240 mm lapped)3. Sheathing (15 mm regular)0.2254. Insulation batt (90 mm – 105 mm)1.8772. 3. 4. 5.6.5. Gypsum wallboard (15 mm)0.0776. Inside film resistance (winter)0.116FIGURE 11.12Wall layers to accompany table 11.5

Given, inside room temperature , Ti = 21* C outside temperature , To = - 6* c. exposed area of the…

Answered: ТABLE 11.5 Thermal Resistance of Wall…

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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A typical exterior frame wall (made up of 60 mm × 120 mm studs) of a house
contains the materials as shown. For most residential buildings, the inside room temperature is kept around 21° C. Assuming an outside temperature of −6° C and an exposed area of 16 m² , we are interested in determining the heat loss through the wall.

ТABLE 11.5
Thermal Resistance of Wall Materials
Items
Thermal Resistance
m² K/W
1. Outside film resistance
0.029
(winter, 24 kmph wind)
0.138
| 2. Siding, wood (15 mm x 240 mm lapped)
3. Sheathing (15 mm regular)
0.225
4. Insulation batt (90 mm – 105 mm)
1.877
2. 3. 4. 5.
6.
5. Gypsum wallboard (15 mm)
0.077
6. Inside film resistance (winter)
0.116
FIGURE 11.12
Wall layers to accompany table 11.5

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