Qigihar House in Heilongiiang Province, China Heat Loss Problems, BSCl 2101 Climate: Avg. remperature is 3.2°C Degree Days is 5000 Inside Air Temp. is 20°C Wall Construction, Inside to Out: 15mm Gypsum Plaster, Sand Aggregate Concrete Block, rectangular core, Sand and Gravi 15mm Cement Plaster, Sand Aggregate All 4 walls measure the same, 8m wide by 7mtall. The house is heated with electricity at a cost of $0.10kWh 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. Calculate the rate of heat flow through the wall again for the January 2.5% temperature. Plot the temperature profile approximately to scale through a vertical cross-section of the wall. Calculate the January heating cost for the building. Calculate the annual heating cost for the building. Now add 2" ( 50.8mm ) of extruded polystyrene, smooth skin surface, 35kgm3 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. Calculate the new rate of heat flow through the wall again for the January 2.5%temperature. Plot the new temperature profile approximately to scale through a vertical cross.section of the wall. Calculate the new January heating cost for the building. Calculate the new annual heating cost for the building.

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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Qigihar House in Heilongiiang Province, China Heat Loss Problems, BSCl 2101 Climate: Avg. remperature is 3.2°C Degree Days is 5000 Inside Air Temp. is 20°C Wall Construction, Inside to Out: 15mm Gypsum Plaster, Sand Aggregate Concrete Block, rectangular core, Sand and Gravi 15mm Cement Plaster, Sand Aggregate All 4 walls measure the same, 8m wide by 7mtall. The house is heated with electricity at a cost of $0.10kWh 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. Calculate the rate of heat flow through the wall again for the January 2.5% temperature. Plot the temperature profile approximately to scale through a vertical cross-section of the wall. Calculate the January heating cost for the building. Calculate the annual heating cost for the building. Now add 2" ( 50.8mm ) of extruded polystyrene, smooth skin surface, 35kgm3 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. Calculate the new rate of heat flow through the wall again for the January 2.5%temperature. Plot the new temperature profile approximately to scale through a vertical cross.section of the wall. Calculate the new January heating cost for the building. Calculate the new annual heating cost for the building.

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 日本国 All 4 walls measure the same, 8m wide by 7m tall. The house is heated with electricity at a cost of $0.10/kWh 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. 4. Calculate the January heating cost for the building. 5. Calculate the annual heating cost for the building. 8m 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. 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. 8. 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. 7mm

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