refrigerant-134a at 1.4MPa & 90 oC is throttled to a pressure of 0.6MPa. What is the Temp of the refrigerant after throttling in oC
refrigerant-134a at 1.4MPa & 90 oC is throttled to a pressure of 0.6MPa. What is the...
6.5 lbm/s of refrigerant 134a initially at 40 psia and 60 F is throttled adiabatically to 20 psia ft a) What is the volumetric flow rate before throttling? b) What is the volumetric flow rate after throtting? (Assume that the change in kinetic energy is negligible.) c) What is the temperature after throttling?
3. Refrigerant-134a flows at a rate of 9 Ibm/s at 40 psia, and 100°F. The refrigerant is then throttled adiabatically to 10 psia (a) What is the volumetric flow rate before throttling in ft'/s? Ans: 12.596 ft'/s (b) What is the volumetric flow rate after throttling in ft'/s? Assume that the change in kinetic energy is negligible. Ans: 51.64 ft/s (c) What is the temperature after throttling in "F? Ans: 92.763°F 3. Refrigerant-134a flows at a rate of 9 Ibm/s...
A Refrigeration System Using R-134A In a refrigeration system, the refrigerant R-134A begins as saturated vapor at -15°(State 1). It then goes through a reversible adiabatic compressor to reach State 2. After flowing through the condenser (a heat exchanger), the refrigerant exits as saturated liquid at 70°C (State 3). It is then throttled by going through an expansion valve, to reach State 4. It finishes the cycle by going through another heat exchanger (the evaporator), to return to State 1....
saturated liquid of refrigerant 134-a at 1600 KPa is throttled to a pressure of 200 KPa, the final temperature is :
Refrigerant 134a at 1MPa and 90℃ is to be cooled to 1 MPa and 30℃ in a condenser by air. The air enters at 100kPa and 27 ℃ with a volume flow rate of 600m3/min and leaves at 95kPa and 60℃. Determine the mass flow rate of the refrigerant.
A throttling calorimeter shown below is used to determine the quality of a two-phase mixture of R-134a refrigerant that is flowing in a tube. The calorimeter operates by bleeding offa small fraction of the flow stream and throttling it to a lower pressure. The device is based upon the fact that over a wide range of temperatures and qualities, the two-phase refrigerant can be throttled to a superheated vapor state. In this case, it is possible to estimate the stream...
Problem #2 Refrigerant 134a enters an adiabatic compressor at 0.1 MPa and -20 oC while it leaves at 1 MPa and 110 oC. The mass flow rate of the compressor is 0.3 kg/s. Determine: a) The power input to the compressor, in kW. b) The volume flow rate of the refrigerant at the compressor inlet.
R-134a enters an adiabatic throttle as a compressed liquid at 18°C. If the refrigerant leaves the throttle at 70 kPa, determine the quality, in percent of the exit stream. Give your answer to 3 significant figures. Throttling valve R-134a Saturated Mixture Compressed Liquid
Refrigerant 134a enters the expansion valve of an air conditioning unit at 140 Lbf/in2, 80 0F and exits at 50 Lbf/in2. If the refrigerant undergoes a throttling process, what are the temperature and the quality at the exit of the valve? Also determine the rate of entropy production from the inlet to the exit?
Estimate the specific volume of refrigerant-134a at a pressure of 3 bar and a temperature of -12 degree C.