Answered: Calculate the RSI-total for the walls…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Transcribed Image Text:Climate: Avg. Temperature is 3.2°C July 2.5% high is 22.8°C, J Degree Days is 5000 Inside Air Temp. is 20°C Wall Construction, Inside to Out: ● · . Qigihar House in Heilongjiang Province, China Heat Loss Problems, BSCI 2101 . 1. January 2.5% low is -26.0°C 15mm Gypsum Plaster, Sand Aggregate X Concrete Block, rectangular core, Sand and Gravel 2 core, 200mm 15mm Cement Plaster, Sand Aggregate All 4 walls measure the same, 8m wide by 7m tall. The house is heated with electricity at a cost of $0.10/kWh 4. Calculate the January heating cost for the building. 1. Calculate the RSI-total for the walls using the tabular method demonstrated in class, and the temperature drop through each element for the January 2.5% temperature. 2. Calculate the rate of heat flow through the wall again for the January 2.5% temperature. 3. Plot the temperature profile approximately to scale through a vertical cross-section of the wall. 5. Calculate the annual heating cost for the building. 用国 8m 6. Now add 2" (50.8mm) of extruded polystyrene, smooth skin surface, 35kg/m³ rigid insulation to the inside surfaces of the walls, and cover it with 9.5mm gypsum board for fire protection, and calculate the new RSI-total for the walls. 7. Calculate the new rate of heat flow through the wall again for the January 2.5% temperature. 9. Calculate the new January heating cost for the building. 3. Plot the new temperature profile approximately to scale through a vertical cross-section of the wall. 10. Calculate the new annual heating cost for the building. 17m

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