A compressor at steady state uses R22 at a saturated vapor of 4
bar. If the process occurs
adiabatically and reversibly, and it compresses the fluid to 18
bar, what is the required mass
flow rate of the refrigerant in kg/s if the power required for the
compressor is 7.5 kW. State
assumptions used in order to make this calculation and draw a T-s
diagram. Show all work.
A compressor at steady state uses R22 at a saturated vapor of 4 bar. If the...
Problem 4.041 SI Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°C with a volumetric flow rate of 0.18 m3/s. Refrigerant exits at 9 bar, 70°C. Changes in kinetic and potential energy from inlet to exit can be ignored. Determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kW.
An ideal vapor-compression refrigerant cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at -10°C, and saturated liquid leaves the condenser at 28°C. The mass flow rate of refrigerant is 5 kg/min. Determine (a) The compressor power, in kW (b) The refrigerating capacity, in tons. (c) The coefficient of performance. Sketch the system on a T-s diagram with full label. A vapor-compression heat pump with a heating capacity of 500 kJ/min is...
An ideal vapor-compression refrigeration cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at 1.25 bar, and saturated liquid exits the condenser at 5 bar. The mass flow rate of refrigerant is 8.5 kg/min. A. Determine the magnitude of the compressor power input required, in kW (report as a positive number). B. Determine the refrigerating capacity, in tons. C. Determine the coefficient of performance. Please answer all parts of the question. Thanks!
available ur tank V=0.2 m reversible, adiabatic compressor R22 Thank = -20°C Vii = 0.05 m I Wc Tomo = -10°C m=0.1 kg/s for t = 10 min Pcout = 18 bar Problem sketch A tank with volume V = 0.2 m2 contains refrigerant R22 at Ttank = -20°C, as shown in the problem sketch. Initially the tank contains V1,1 = 0.05 m2 of liquid R22 and the rest of the tank contains vapor R22. A reversible, adiabatic compressor operating...
In a simple vapor compression refrigeration cycle: - Ammonia exits the evaporator as saturated· vapor at -22°C (State 1 ) .. - Ammonia enters the condenser at 16 Bar and 160°C (State 2; h2 = 1798.45 kJ/kg) - Ammonia exits the condenser as saturated l1quid at 16 Bar (State 3; h3 = 376.46 kJ/kg) - The refrigeration capacity is 150 kW. Draw the system schematic and the T-s diagram and determine: i) the mass flow rate· of refrigerant, ii) the...
3. Saturated water vapor at 300°F enters a compressor operating at steady state with a mass flow rate of 5 lb/s and is compressed adiabatically to 800 lbf/in. Ignore kinetic and potential energy effects. If the power input is 2150 hp, determine for the compressor a) The isentropic compressor efficiency b) Rate of entropy production (hp/ R)
Refrigerant-134a is compressed by an adiabatic compressor from the saturated vapor state at 0.12 MPa to 1.2 MPa and 70 C at a rate of 0.108 kg/s. The power input to the compressor is 6.85 kW 59.4 kW 6.42 kW 63.4 kW 587 kW
Water vapor enters a turbine operating at steady state at 600°C, 40 bar, with a velocity of 200 m/s, and expands adiabatically to the exit, where it is saturated vapor at 0.8 bar, with a velocity of 150 m/s and a volumetric flow rate of 15 m3/s. Determine the power developed by the turbine, in kW.
In a vapor-compression refrigeration cycle, ammonia exits the evaporator as saturated vapor at -22°C. The refrigerant enters the condenser at 16 bar and 160°C, and saturated liquid exits at 16 bar. There is no significant heat transfer between the compressor and its surroundings, and the refrigerant passes through the evaporator with a negligible change in pressure. If the refrigerating capacity is 150 kW, determine: (a) the mass flow rate of the refrigerant, in kg/s. (b) the power input to the...
In a vapor-compression refrigeration cycle, ammonia exits the evaporator as saturated vapor at -22°C. The refrigerant enters the condenser at 16 bar and 190°C, and saturated liquid exits at 16 bar. There is no significant heat transfer between the compressor and its surroundings, and the refrigerant passes through the evaporator with a negligible change in pressure. If the refrigerating capacity is 50 kW, determine: (a) the mass flow rate of the refrigerant, in kg/s. (b) the power input to the...