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1. Water at atmospheric pressure is to be boiled in polished copper pan. The diameter of the pan is 300 mm and is kept at 111°C. Calculate the following : (1) Power of the burner to maintain boiling: (i) Rate of evaporation in kg/ħ. Take the properties of water at 100°C as follows: P, = 958 kg/m²; p, = 0.597 kg/m²; µ,= 278 × 10ʻ kg/ms; c= 4216 JkgK; h = 2257 kJ/kg ; Pr =1.723, ở = 58.9 × 10 N/m (Ans. (1) 13.664 kW, (i1) 21.8 kg/h]

1. Water at atmospheric pressure is to be boiled in polished copper pan. The diameter of the pan is 300 mm and is kept at 111°C. Calculate the following : (1) Power of the burner to maintain boiling: (i) Rate of evaporation in kg/ħ. Take the properties of water at 100°C as follows: P, = 958 kg/m²; p, = 0.597 kg/m²; µ,= 278 × 10ʻ kg/ms; c= 4216 JkgK; h = 2257 kJ/kg ; Pr =1.723, ở = 58.9 × 10 N/m (Ans. (1) 13.664 kW, (i1) 21.8 kg/h]

Elements Of Electromagnetics
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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1. Water at atmospheric pressure is to be boiled in polished copper pan. The diameter of the pan is 300 mm and is kept at 111°C. Calculate the following : () Power of the burner to maintain boiling; (i) Rate of evaporation in kg/h. Take the properties of water at 100°C as follows: P, = 958 kg/m"; p, = 0.597 kg/m²; µ,= 278 × 10ʻ kg/ms; c= 4216 JkgK; = 2257 kJ/kg ; Pr= 1.723, o = 58.9 x 10-³ N/m %3D [Ans. (1) 13.664 kW, (i) 21.8 kg/h]
Transcribed Image Text:1. Water at atmospheric pressure is to be boiled in polished copper pan. The diameter of the pan is 300 mm and is kept at 111°C. Calculate the following : () Power of the burner to maintain boiling; (i) Rate of evaporation in kg/h. Take the properties of water at 100°C as follows: P, = 958 kg/m"; p, = 0.597 kg/m²; µ,= 278 × 10ʻ kg/ms; c= 4216 JkgK; = 2257 kJ/kg ; Pr= 1.723, o = 58.9 x 10-³ N/m %3D [Ans. (1) 13.664 kW, (i) 21.8 kg/h]
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