A typical wall for a house is constructed as shown Figure Q2(b). “Two-by- b) four" wood studs have dimensions of 4. 13×9.21 cm and a thermal conductivity of 0.1 W/m°C. Draw the thermal circuit and calculate the overall heat-transfer coefficient and R value of the wall. Outside air convection, h = 15 W/m² - °C Common brick, k=0.69 | 8 cm 1.9 cm, k = 0.96 Gypsum sheath 1.9 cm, k = 0.48 · 40.6 cm - Insulation, k = 0.04 2 x 4 studs- Inside air convection, h =7.5 W/m² • °C Figure Q2(b)

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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A typical wall for a house is constructed as shown Figure Q2(b). “Two-by-
four" wood studs have dimensions of 4. 13×9.21 cm and a thermal conductivity
of 0.1 W/m°C. Draw the thermal circuit and calculate the overall heat-transfer
coefficient and R value of the wall.
(b)
Outside air convection, h= 15 W/m² - °C
C Common brick, k = 0.69
8 ст
1.9 cm, k = 0.96
Gypsum
sheath
1.9 cm, k = 0.48
40.6 cm
- Insulation, k = 0.04
- 2 x 4 studs-
Inside air convection, h=7.5 W/m² • °C
Figure Q2(b)
Transcribed Image Text:A typical wall for a house is constructed as shown Figure Q2(b). “Two-by- four" wood studs have dimensions of 4. 13×9.21 cm and a thermal conductivity of 0.1 W/m°C. Draw the thermal circuit and calculate the overall heat-transfer coefficient and R value of the wall. (b) Outside air convection, h= 15 W/m² - °C C Common brick, k = 0.69 8 ст 1.9 cm, k = 0.96 Gypsum sheath 1.9 cm, k = 0.48 40.6 cm - Insulation, k = 0.04 - 2 x 4 studs- Inside air convection, h=7.5 W/m² • °C Figure Q2(b)
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