An office building at 32° North Latitude that has no external shading. The windows have a total window area 40 m², double-glazed with a 6-mm air space and with regular plate glass inside and out. Draperies with a shading coefficient of 0.7 are fully closed. Compute the total heat gain for the south windows for the time 12 noon; (a) In August where indoor and outdoor temperature are 25 "C and 37 "C respectively, (b) In December where indoor and outdoor temperature are 20°C and 4 C respectively.

An office building at 32° North Latitude that has no external shading. The windows have a total window area 40 m², double-glazed with a 6-mm air space and with regular plate glass inside and out. Draperies with a shading coefficient of 0.7 are fully closed. Compute the total heat gain for the south windows for the time 12 noon; (a) In August where indoor and outdoor temperature are 25 "C and 37 "C respectively, (b) In December where indoor and outdoor temperature are 20°C and 4 C respectively.

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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Liquid oxygen is stored in a thin-walled, spherical container 0.8 m in diameter, which is enclosed within a second thin-walled, spherical container 1.2 m in diameter. The opaque, diffuse, gray container surfaces have an emissivity of 0.05 and are separated by an evacuated space. If the outer surface is at 270 K and the inner surface is at 95 K, what is the mass rate of oxygen lost due to evaporation, in kg/s? (The latent heat of vaporization of oxygen is 2.13 x 105 J/kg.) i kg/s
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Liquid oxygen is stored in a thin-walled, spherical container 0.8 m in diameter, which is enclosed within a second thin-walled, spherical container 1.2 m in diameter. The opaque, diffuse, gray container surfaces have an emissivity of 0.05 and are separated by an evacuated space. If the outer surface is at 270 K and the inner surface is at 95 K, what is the mass rate of oxygen lost due to evaporation, in kg/s? (The latent heat of vaporization of oxygen is 2.13 x 105 J/kg.) m = kg/s Physical Properties Mathematical Functions