3.75 Three lb of water is contained in a piston-cylinder assembly, initially occupying a volume V₁ = 30 ft³ at T₁ = 300°F. The water undergoes two processes in series: Process 1-2: Constant-temperature compression to V₂ = 11.19 ft³, during which there is an energy transfer by heat from the water of 1275 Btu. Process 2-3: Constant-volume heating to p3= 120 lbf/in.² Sketch the two processes in series on a T-v diagram. Neglecting kinetic and potential energy effects, determine the work in Process 1-2 and the heat transfer in Process 2-3, each in Btu.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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3.75 Three lb of water is contained in a piston-cylinder
assembly, initially occupying a volume V₁ = 30 ft³ at T₁ =
300°F. The water undergoes two processes in series:
Process 1-2: Constant-temperature compression to V₂ = 11.19 ft³,
during which there is an energy transfer by heat from the
water of 1275 Btu.
Process 2-3: Constant-volume heating to p3
120 lbf/in.²
Sketch the two processes in series on a T-v diagram.
Neglecting kinetic and potential energy effects, determine
the work in Process 1-2 and the heat transfer in Process 2-3,
each in Btu.
=
Transcribed Image Text:3.75 Three lb of water is contained in a piston-cylinder assembly, initially occupying a volume V₁ = 30 ft³ at T₁ = 300°F. The water undergoes two processes in series: Process 1-2: Constant-temperature compression to V₂ = 11.19 ft³, during which there is an energy transfer by heat from the water of 1275 Btu. Process 2-3: Constant-volume heating to p3 120 lbf/in.² Sketch the two processes in series on a T-v diagram. Neglecting kinetic and potential energy effects, determine the work in Process 1-2 and the heat transfer in Process 2-3, each in Btu. =
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