A vapor-compression refrigeration cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor ent
ers the compressor at 2 bar, and saturated liquid exits the condenser at 8 bar. The isentropic compressor efficiency is 80%. The mass flow rate of refrigerant is 7 kg/min.
1-Write the assumptions no less than three
2-Draw clear Schematic
(3) the compressor power, in kW.
(4) the refrigeration capacity, in tons.
(5) the coefficient of performance.
1-Write the assumptions no less than three
2-Draw clear Schematic
(3) the compressor power, in kW.
(4) the refrigeration capacity, in tons.
(5) the coefficient of performance.
1 answer:
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Answer:
The pressure that will cause yielding in the tank in the longitudinal direction is 1.7 Mpa
Explanation:
We are dealing with a thin-walled pressure vessel here.
the formula for calculating the hoops stress of this pressure vessel is
longitudinal yield stress =
Thickness = 2/1000 =0.002m
Outside diameter = inside siameter + thickness = 2m + 0.002m= 2.002m
Dm = Mean diameter = Outside diameter - thickness = 2.002 - 0.002 = 2m
Answer:
factor of safety = 0.8
Explanation:
given data
maximum gauge pressure in steel p = 10 MPa
outer diameter do = 200 mm
wall thickness t = 2 mm
ultimate stress of the steel σU = 400 MPa
solution
We check the type of shell that is
so we can see that that is
so that it mean vessel is a thin shell now we can we get maximum pressure by the maximum tensile stress is
σ = .......................1
put here value and we get
σ =
σ = 500 MPa
so factor of safety will be express as
factor of safety = ..........2
factor of safety =
factor of safety = 0.8
Answer:
solution in the picture attached
Explanation:
