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22. A wall is 20m by 3 m, which includes 20% double-glazing glass windows with a 8 mm airspace (Aluminum frame without thermal break). The wall proper consists of one layer of 5 inch thick face brick backed by 300 mm of sand and gravel or stone aggregate concrete with 15 mm of gypsum plaster on the inside. For indoor and outdoor design temperatures of 20°C and 40°C, respectively, determine the heat loss through this wall, kW. The R values are give below. Wall Outside air R (m²K/W) 0.02 Face brick 0.08 Concrete, 250 mm 0.17 Plaster, 12 mm 0.08 Outside air 0.12

22. A wall is 20m by 3 m, which includes 20% double-glazing glass windows with a 8 mm airspace (Aluminum frame without thermal break). The wall proper consists of one layer of 5 inch thick face brick backed by 300 mm of sand and gravel or stone aggregate concrete with 15 mm of gypsum plaster on the inside. For indoor and outdoor design temperatures of 20°C and 40°C, respectively, determine the heat loss through this wall, kW. The R values are give below. Wall Outside air R (m²K/W) 0.02 Face brick 0.08 Concrete, 250 mm 0.17 Plaster, 12 mm 0.08 Outside air 0.12

Practical Management Science
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter4: Linear Programming Models
Section4.8: Data Envelopment Analysis (dea)
Problem 42P
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22. A wall is 20m by 3 m, which includes 20% double-glazing glass windows with a 8 mm airspace (Aluminum frame without thermal break). The wall proper consists of one layer of 5 inch thick face brick backed by 300 mm of sand and gravel or stone aggregate concrete with 15 mm of gypsum plaster on the inside. For indoor and outdoor design temperatures of 20°C and 40°C, respectively, determine the heat loss through this wall, kW. The R values are give below. Wall Outside air R (m²K/W) 0.02 Face brick 0.08 Concrete, 250 mm 0.17 Plaster, 12 mm 0.08 Outside air 0.12
Transcribed Image Text:22. A wall is 20m by 3 m, which includes 20% double-glazing glass windows with a 8 mm airspace (Aluminum frame without thermal break). The wall proper consists of one layer of 5 inch thick face brick backed by 300 mm of sand and gravel or stone aggregate concrete with 15 mm of gypsum plaster on the inside. For indoor and outdoor design temperatures of 20°C and 40°C, respectively, determine the heat loss through this wall, kW. The R values are give below. Wall Outside air R (m²K/W) 0.02 Face brick 0.08 Concrete, 250 mm 0.17 Plaster, 12 mm 0.08 Outside air 0.12
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