A school classroom is 16.7m long, 10m wide and 3 .5m high. There is a 4m x 6m window in the east wall. Only the east wall/window is exterior. Assume the thermal conditions in adjacent spaces (west, south, north, above and below) are the same as those of the classroom. Determine the cooling load at2:00 pm, 21 July as maximum Other known conditions include: Latitude = 36o N Ground reflectance = 0.2 Clear sky with a clearness number = 1.0 Overall window heat transmission coefficient = 7.0 W/m2.K Room dry-bulb temperature = 25°C Permissible temperature exceeded = 2.5% Schedule of occupancy: 7people enter at 10:00am and stay for 12 hours Lighting schedule: 300 W on at 10:00AM for 12hours Exterior wall structure: • Outside surface, A0 • Face brick (100 mm), A2 • Insulation (50 mm), B3 • Concrete block (100 mm), C3 • Exterior window: •double glazing window • No exterior shading, SC = 1.0
A school classroom is 16.7m long, 10m wide and 3 .5m high. There is a 4m x 6m window in the east wall. Only the east wall/window is exterior. Assume the thermal conditions in adjacent spaces (west, south, north, above and below) are the same as those of the classroom. Determine the cooling load at2:00 pm, 21 July as maximum Other known conditions include: Latitude = 36o N Ground reflectance = 0.2 Clear sky with a clearness number = 1.0 Overall window heat transmission coefficient = 7.0 W/m2.K Room dry-bulb temperature = 25°C Permissible temperature exceeded = 2.5% Schedule of occupancy: 7people enter at 10:00am and stay for 12 hours Lighting schedule: 300 W on at 10:00AM for 12hours Exterior wall structure: • Outside surface, A0 • Face brick (100 mm), A2 • Insulation (50 mm), B3 • Concrete block (100 mm), C3 • Exterior window: •double glazing window • No exterior shading, SC = 1.0
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 school classroom is 16.7m long, 10m wide and 3 .5m high. There is a 4m x 6m window in the east wall. Only the east wall/window is exterior. Assume the thermal conditions in adjacent spaces (west, south, north, above and below) are the same as those of the classroom. Determine the cooling load at2:00 pm, 21 July as maximum
Other known conditions include:
Latitude = 36o N
Ground reflectance = 0.2
Clear sky with a clearness number = 1.0
Overall window heat transmission coefficient = 7.0 W/m2.K Room dry-bulb temperature = 25°C
Permissible temperature exceeded = 2.5%
Schedule of occupancy: 7people enter at 10:00am and stay for 12 hours
Lighting schedule: 300 W on at 10:00AM for 12hours
Exterior wall structure:
• Outside surface, A0
• Face brick (100 mm), A2
• Insulation (50 mm), B3
• Concrete block (100 mm), C3 •
Exterior window:
•double glazing window
• No exterior shading, SC = 1.0
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