Three-tenths kmol of carbon monoxide (CO) in a piston- cylinder assembly undergoes a process from p1 = 150 kPa, T1 = 300 K to p2 =500 kPa, T2 = 470 K. For the process, W = -300 kJ.Employing the ideal gas model, determine:(a) the heat transfer, in kJ.(b) the change in entropy, in kJ/K.

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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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Refrigerant 134a at p1 = 30 lbf/in2, T1 = 40°F enters a compressor operating at steady state with a mass flow rate of 350 Ib/h and exits as saturated vapor at p2 = 16O Ib/in?. Heat transfer occurs from the compressor to its surroundings, which are at To = 40°F. Changes in kinetic and potential energy can be ignored. The power input to the compressor is 3.5 hp. Determine the heat transfer rate for the compressor, in Btu/hr, and the entropy production rate for the compressor, in Btu/hr.°R.
Please give me a handwritten solution. Don't use chatgpt.
13
1. thermodynamics
Refrigerant 134a at p1 = 30 lb/in?, T1 = 40°F enters a compressor operating at steady state with a mass flow rate of 400 lb/h and exits as saturated vapor at p2 = 160 lb;/in?. Heat transfer occurs from the compressor to its surroundings, which are at To = 40°F. Changes in kinetic and potential energy can be ignored. The power input to the compressor is 4 hp. Determine the heat transfer rate for the compressor, in Btu/hr, and the entropy production rate for the compressor, in Btu/hr-°R.
Refrigerant 134a at p1 = 30 lbş/in?, T1 = 40°F enters a compressor operating at steady state with a mass flow rate of 250 lb/h and exits as saturated vapor at p2 = 160 lbę/in?. Heat transfer occurs from the compressor to its surroundings, which are at To = 40°F. Changes in kinetic and potential energy can be ignored. The power input to the compressor is 2.5 hp. Determine the heat transfer rate for the compressor, in Btu/hr, and the entropy production rate for the compressor, in Btu/hr-°R.
2 kg of air contained in a piston-cylinder assembly undergoes a process from the initial state of T₁ = 400K, v₁ = 0.5 m³ to the final state of T₂ = 600K, v₂ = 0.8 m³. Assume the ideal gas model with cv = 0.72 kJ/kg . K for the air. Kinetic and potential energy effects are negligible. - Can this process occur adiabatically? Demonstrate it with formulas and calculations. If yes, determine the work, in kJ, for an adiabatic process between these states. If not, determine the direction of the heat transfer (in or out of the system). Determine the temperature of the isentropic process with the same initial state, T₁ = 400K, v₁ = 0.5 m³, and the same final specific volume: v₂ = 0.8 m³.

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Three-tenths kmol of carbon monoxide (CO) in a piston- cylinder assembly undergoes a process from p1 = 150 kPa, T1= 300 Kto p2 = 500 kPa, T2 = 470 K. For the process, W = -300 kJ. Employing the ideal gas model, determine: (a) the heat transfer, in kJ. (b) the change in entropy, in kJ/K.