Carry out a simple thermodynamic analysis of this process

Assignment Help Mechanical Engineering

Reference no: EM13613500

Current automotive air conditioners use R134a as a working fluid. Assume an evaporator temperature of 0C (in practice, this would be just above freezing, to prevent ice buildup) and a condenser temperature of 40C (needs to be able to exhaust heat into the hot summer air). In this problem, neglect the finite compressor efficiency.

a) Carry out a simple thermodynamic analysis of this process: find the operating pressures in the evaporator and condenser, sketch the cycle on a PH diagram, find the heat flows QH and QL and work done W. Present your results in a table (units kJ/kg). Compute the COP, and compare to the Carnot COP.

b) Now assume the compressor e?ciency is 75 percent. Determine the new COP.

Reference no: EM13613500

Questions Cloud

Suppose that the diameter of a metal cylinder has a : suppose that the battery failure time measure in hours has probability density function given by fx 2 x 13 x?0.what

Ray construction purchased a concrete mixer on august 1 : ray construction purchased a concrete mixer on august 1 20x5. company officials revealed the following information

If the surroundings are at 30 c and the flow is steady find : steam at 2 kg s enters a turbine at 6000 kpa and 600 c and exits as saturated vapor at 20 kpa. the turbine produces

A truck covers 420 m in 800 s while smoothly slowing down : a truck covers 42.0 m in 8.00 s while smoothly slowing down to final speed of 2.50 ms.a find its original speed.b find

Carry out a simple thermodynamic analysis of this process : current automotive air conditioners use r134a as a working fluid. assume an evaporator temperature of 0c in practice

On june 30 20x5 maine lobster purchased a patent for a new : on june 30 20x5 maine lobster purchased a patent for a new freezing process at a cost of 33600. it estimated that the

If the ball is in contact with the wall for 315 ms what is : a 49.0-g super ball traveling at 30.0 ms bounces off a brick wall and rebounds at 15.0 ms. a high-speed camera records

Prepare a direct materials budget showing the quantity of : pearl products limited of shenzhen china manufactures and distributes toys throughout south east asia. five cubic

A particle moves according to the equation x 8t2 where x : a particle moves according to the equation x 8t2 where x is in meters and t is in seconds. a find the average velocity

User Account

All Pages