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.
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.
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.68P
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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.
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Step 1: Given data
VIEWStep 2: Part 1 Calculation of Total RSI and Temperature Drop Through Each Element
VIEWStep 3: Part 2&3 Calculation of the Rate of Heat Flow Through the Wall
VIEWStep 4: Part 4 Calculation of the January Heating Cost, Part 5 Calculation of the Annual Heating Cost
VIEWStep 5: Part 6 Calculation of New Total RSI for the Walls with Added Insulation, Part 7 Calculation of New
VIEWStep 6: Part 8 Calculation of Temperature Drop Across Each Layer with Added Insulation and Plot of New Tempe
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