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2. A spherical storage tank has a diameter of 5 m. The temperature of the exterior surface of the tank is 10°C when, on a calm clear night, the air temperature drops rapidly to -15°C. Estimate the rate of convective heat loss from the tank under these conditions.

2. A spherical storage tank has a diameter of 5 m. The temperature of the exterior surface of the tank is 10°C when, on a calm clear night, the air temperature drops rapidly to -15°C. Estimate the rate of convective heat loss from the tank under these conditions.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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2. A spherical storage tank has a diameter of 5 m. The temperature of the exterior surface of the tank is 10°C when, on a calm clear night, the air temperature drops rapidly to -15°C. Estimate the rate of convective heat loss from the tank under these conditions.
Transcribed Image Text:2. A spherical storage tank has a diameter of 5 m. The temperature of the exterior surface of the tank is 10°C when, on a calm clear night, the air temperature drops rapidly to -15°C. Estimate the rate of convective heat loss from the tank under these conditions.
D = 5m T₁ = 10°C 283K T₂ = -15°2 = 258 K Air properties } Pr = 0.715 at -15°C K = 0.023 D = 1·25x105 m² / SPL. B = 1 stavy R₁ = Pribir. br = L³ BAT g 222 = 7.259 x 1011 X 283+258 5x0,0037x 25 xgist (1.25 x 10-5) 2 Gir Ra = Pr. bur Ra = 5:19 x 10" 2 } AT = 25 K 0.0037 0.715x 7.259 x 1011 € (10³ to 10¹2)
Transcribed Image Text:D = 5m T₁ = 10°C 283K T₂ = -15°2 = 258 K Air properties } Pr = 0.715 at -15°C K = 0.023 D = 1·25x105 m² / SPL. B = 1 stavy R₁ = Pribir. br = L³ BAT g 222 = 7.259 x 1011 X 283+258 5x0,0037x 25 xgist (1.25 x 10-5) 2 Gir Ra = Pr. bur Ra = 5:19 x 10" 2 } AT = 25 K 0.0037 0.715x 7.259 x 1011 € (10³ to 10¹2)
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