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initially at 2.75°C with a qualit 0.2. The pressure is held cons nitrogen gas acting against a bladder as shown. The valve i opened between the tank and supply line carrying R134a at

initially at 2.75°C with a qualit 0.2. The pressure is held cons nitrogen gas acting against a bladder as shown. The valve i opened between the tank and supply line carrying R134a at

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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A tank contains 15 kg of R134a, initially at 2.75°C with a quality of 0.2. The pressure is held constant by nitrogen gas acting against a flexible bladder as shown. The valve is opened between the tank and a supply line carrying R134a at 950 kPa, 125°C. The pressure regulator allows the pressure in the tank to remain constant as the bladder expands. The valve between the line and the tank is closed at the instant when the quality is 0.92. If the entropy generation amounts to 1.525 kJ/K, determine the (a) mass of R134a admitted in the tank, in kg and the (b) heat transferred in kJ. Is heat absorbed or released during the process? Show your mass, energy and entropy balance equations at the start of your solution. Pressure-regulating valve Nitrogen supply -Flexible bladder Refrigerant 134a Tank Line
Transcribed Image Text:A tank contains 15 kg of R134a, initially at 2.75°C with a quality of 0.2. The pressure is held constant by nitrogen gas acting against a flexible bladder as shown. The valve is opened between the tank and a supply line carrying R134a at 950 kPa, 125°C. The pressure regulator allows the pressure in the tank to remain constant as the bladder expands. The valve between the line and the tank is closed at the instant when the quality is 0.92. If the entropy generation amounts to 1.525 kJ/K, determine the (a) mass of R134a admitted in the tank, in kg and the (b) heat transferred in kJ. Is heat absorbed or released during the process? Show your mass, energy and entropy balance equations at the start of your solution. Pressure-regulating valve Nitrogen supply -Flexible bladder Refrigerant 134a Tank Line
Answers: Mass Balance Equation: Energy Balance Equation: Entropy Balance Equation: Initial State: State at the Inlet: Final State: mass admitted = kg Q = kJ (heat is
Transcribed Image Text:Answers: Mass Balance Equation: Energy Balance Equation: Entropy Balance Equation: Initial State: State at the Inlet: Final State: mass admitted = kg Q = kJ (heat is
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