10. A typical ceiling of a house consists of the items in the accompanying table. Assume aninside room temperature of 70°F and an attic air temperature of 15°F, with an exposed areaof 1000 ft?. Determine the temperature distribution through the ceiling. Also calculate heatloss through the ceiling.ab bood ta bon odi of(s) 1.2.3.4.Problem 11.13ResistanceItems(h • f² • °F/Btu)1. Inside attic film resistance2. Insulation batt (6 in.)0.6819.03. Gypsum wallboard (1/2 in.)4. Inside film resistance (winter)0.450.68

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10. A typical ceiling of a house consists of the items in the accompanying table. Assume inside room temperature of 70°F and an attic air temperature of 15°F, with an exposed a of 1000 ft?. Determine the temperature distribution through the ceiling. Also calculate h loss through the ceiling. ab be tn bo di

10. A typical ceiling of a house consists of the items in the accompanying table. Assume inside room temperature of 70°F and an attic air temperature of 15°F, with an exposed a of 1000 ft?. Determine the temperature distribution through the ceiling. Also calculate h loss through the ceiling. ab be tn bo di

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A radiant-heating system is installed in the plaster ceiling of a room 36 ft long by 18 ft wide by 9 ft high. Assume direct radiation. The temperature of the concrete floor is maintained at 75°F. The temperature of the air passing through the room is held at 75°F. If the required heat supply to the floor is 8000 BTU/hr, calculate the necessary temperature at the ceiling surface. How much heat is transferred to the air, in BUT/hr? Emissivity of plaster = 0.93; absorptivity of concrete = 0.63. The convective heat-transfer coefficient between the ceiling and the air is given by the equation hc = 0.20 (AT)¹/4.
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