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

I need help About the project I sent and it is the third time I am sending so please I really want help


You are required to undertake the following tasks: 1.      Problem Identification Download the dataset assigned to you from the module Blackboard site. Read the data description

if you have a sample of lap pulp that is at 9% moisture how much of it do you need to be weighed to be put into a valley beater

Imaging Infrared Seekers  A more common approach is to use an infrared waveband where there is a large amount of ambient light from the thermal emission of the background. Th

Students are to undertake a tunnel blast design for the following conditions: • Tunnel is 5.5m wide by 5.5.m high • Rock is a granite with a UCS of 300 MPa • Drill hole diameter is

A pump delivers 40 lpm to a 100 mm bore/25 mm rod cylinder to move a load of 22 kN. A throttle is introduced on the rod end, and return flow with a 10 lpm flow rate. A 70 bar press

Q.4 Explains subtractive rapid prototyping process and compare with additive process.                                                   OR What are additive and su

Comparator A comparator is a device, which compares two input voltages and indicates at the output, which of the two is the larger.  Basically, the circuits use a differential