Outdoor air infiltrates into a building through cracks in the walls at the rate of 700 m3/h (this is infiltration). The outside air is at a temperature of -16.1˚C and a humidity ratio of 0.001 kgv/kga. The density of the outside air is 1.4 kg/m3. The indoor conditions are: temperature of 20˚C and humidity ratio of 0.009 kgv/kga. Calculate: a) The sensible heat load (in kW) due to the infiltrating air b) The latent heat load due (in kW) to the infiltrating air • The specific heat for air at these temperatures is about 1.005 kJ/(kg K). • The latent heat of vaporization (or condensation) is 2453 kJ/kg
Outdoor air infiltrates into a building through cracks in the walls at the rate of 700 m3/h (this is infiltration). The outside air is at a temperature of -16.1˚C and a humidity ratio of 0.001 kgv/kga. The density of the outside air is 1.4 kg/m3. The indoor conditions are: temperature of 20˚C and humidity ratio of 0.009 kgv/kga. Calculate: a) The sensible heat load (in kW) due to the infiltrating air b) The latent heat load due (in kW) to the infiltrating air • The specific heat for air at these temperatures is about 1.005 kJ/(kg K). • The latent heat of vaporization (or condensation) is 2453 kJ/kg
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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Outdoor air infiltrates into a building through cracks in the walls at the rate of 700 m3/h (this is infiltration). The outside air is at a temperature of -16.1˚C and a humidity ratio of 0.001 kgv/kga. The density of the outside air is 1.4 kg/m3. The indoor conditions are: temperature of 20˚C and humidity ratio of 0.009 kgv/kga.
Calculate:
a) The sensible heat load (in kW) due to the infiltrating air
b) The latent heat load due (in kW) to the infiltrating air
• The specific heat for air at these temperatures is about 1.005 kJ/(kg K).
• The latent heat of vaporization (or condensation) is 2453 kJ/kg
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