An air refrigeration system operating on Bell Coleman cycle, takes in air from cold room at 268 K and compresses it from 1.0 bar to 5.5 bar. The index of compression being 1.25. The compressed air is cooled to 300 K. The ambient temperature is 20°C. Air expands in an expander where the index of expansion is 1.35. Calculate : (i) C.O.P. of the system (ii) Quantity of air circulated per minute for production of 1500 kg of ice per day at 0°C from water at 20°C. (ii) Capacity of the plant in terms of kJ/s. Take e, : Latent heat of ice = 335 kJ/kg. = 4.18 kJ/kg K for water, e, = 1.005 kJ/kg K for air %3D [Ans. 1.974 ; 5.814 kg/min ; 7.27 kJ/s)

An air refrigeration system operating on Bell Coleman cycle, takes in air from cold room at 268 K and compresses it from 1.0 bar to 5.5 bar. The index of compression being 1.25. The compressed air is cooled to 300 K. The ambient temperature is 20°C. Air expands in an expander where the index of expansion is 1.35. Calculate : (i) C.O.P. of the system (ii) Quantity of air circulated per minute for production of 1500 kg of ice per day at 0°C from water at 20°C. (ii) Capacity of the plant in terms of kJ/s. Take e, : Latent heat of ice = 335 kJ/kg. = 4.18 kJ/kg K for water, e, = 1.005 kJ/kg K for air %3D [Ans. 1.974 ; 5.814 kg/min ; 7.27 kJ/s)

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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