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5kg of chilled fish at -3°C are rapidly frozen by immersion in a closed, insulated and rigid container with 2000 litres of nitrogen gas at -100°C. i) Determine the final temperature of the fish and gas, assume the nitrogen can be treated as an ideal gas and state any further assumptions made. ii) Calculate the amount of entropy produced given that Gibb's equatis en Tds=du + Pdv where T and P are temperature and pressure respectively, and s, u and v are specific entropy, internal energy and volume respectively. Assume that the specific heat capacity of nitrogen and fish at constant volume are 0.743 and 1.8 kJ/kgK respectively and the density of nitrogen at -100°C is approximately 1.3 kg/m³.

5kg of chilled fish at -3°C are rapidly frozen by immersion in a closed, insulated and rigid container with 2000 litres of nitrogen gas at -100°C. i) Determine the final temperature of the fish and gas, assume the nitrogen can be treated as an ideal gas and state any further assumptions made. ii) Calculate the amount of entropy produced given that Gibb's equatis en Tds=du + Pdv where T and P are temperature and pressure respectively, and s, u and v are specific entropy, internal energy and volume respectively. Assume that the specific heat capacity of nitrogen and fish at constant volume are 0.743 and 1.8 kJ/kgK respectively and the density of nitrogen at -100°C is approximately 1.3 kg/m³.

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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Please answer part ii only given that the answer to part i is-20 degrees 

 

5kg of chilled fish at -3°C are rapidly frozen by immersion in a closed, insulated and rigid container with 2000 litres of nitrogen gas at -100°C. i) Determine the final temperature of the fish and gas, assume the nitrogen can be treated as an ideal gas and state any further assumptions made. ii) Calculate the amount of entropy produced given that Gibb's equatis en Tds=du + Pdv where T and P are temperature and pressure respectively, and s, u and v are specific entropy, internal energy and volume respectively. Assume that the specific heat capacity of nitrogen and fish at constant volume are 0.743 and 1.8 kJ/kgK respectively and the density of nitrogen at -100°C is approximately 1.3 kg/m³.
Transcribed Image Text:5kg of chilled fish at -3°C are rapidly frozen by immersion in a closed, insulated and rigid container with 2000 litres of nitrogen gas at -100°C. i) Determine the final temperature of the fish and gas, assume the nitrogen can be treated as an ideal gas and state any further assumptions made. ii) Calculate the amount of entropy produced given that Gibb's equatis en Tds=du + Pdv where T and P are temperature and pressure respectively, and s, u and v are specific entropy, internal energy and volume respectively. Assume that the specific heat capacity of nitrogen and fish at constant volume are 0.743 and 1.8 kJ/kgK respectively and the density of nitrogen at -100°C is approximately 1.3 kg/m³.
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