Fridge, engineering, Other Engineering

R-134a is compressed in an adiabatic compressor from saturated vapor at 100kPa to a final state at 1 MPa and 50 degrees Celcius. Before entering the compressor, the R-134a receives heat from air in a heat exchanger (evaporator). At the inlet of t he evaporator, the R-134a is at 100kPa and has quality 20%. The air flowing through the heat exchanger can be treated as an ideal gas with cp = 1.00 kJ/kg-K, and decreases 20K in temperature as it transfers heat to the R-134a. Assume that all flows are steady, all changes in kinetic and potential energy are negligible, and the heat exchanger involves no work.
Find:
R-134a temperature at evaporator inlet
R-134a temperature at evaporator outlet
R-134a mass flow rate through evaporator
R-134a mass flow rate through compressor
Phase of R-134a at compressor exit
Work input required for compressor
Air mass flow rate through evaporator
Posted Date: 3/10/2012 11:18:10 AM | Location : United States







Related Discussions:- Fridge, engineering, Assignment Help, Ask Question on Fridge, engineering, Get Answer, Expert's Help, Fridge, engineering Discussions

Write discussion on Fridge, engineering
Your posts are moderated
Related Questions
tunnel diode

Electronic engine control systems : Advances in gas turbine technology have demanded more precise control of engine parameters than can be provided by hydromechanical fuel cont

Design a detailed surface mine excavation plan. Detail development requirements. Detail Production requirements including a full description of the method selected. Number of produ

Testing After Install After installation of a propeller, the engine must be ground run in order to check the propeller for correct function and operation.  Aircraft propeller in

Synchro resolvers for high load The receiver rotor is driven by an electric motor to a null position, i.e. the receiver coil will be aligned at 90 o  to the transmitter coil. A

Hello this is Lee, I have an Econometrics coursework to be helped by some experts from your company. Please send me your reply asap Lee

Do you provide help with Autocad assignments?

Steam enters in the turbine at 6 MPa and 450 deg C and expands at some intermediate pressure 60 % of steam is extracted and remainder expands to 10 kPa at this Investigate the effe

When a beam of monochromatic x ray is incident on a graphite block, it get scattered and scattered wavelength is larger than that of the incident radiation wavelength. This scatter

JFET OPERATION Figure shows the operation of a JFET. The JUGFET has a physical structure that can be represented by the diagram shown in Figure. In Figure, if the N-Ty