- #1

Zheng_

- 24

- 1

## Homework Statement

By the data given below,

Condenser Inlet Pressure (P1/kPa) 1164

Condenser Inlet Temperature (T1/K) 382.8

Condenser Outlet Pressure (P2/kPa) 1102

Condenser Outlet Temperature (T2/K) 297.2

Evaporator Inlet Pressure (P3/kPa) 290

Evaporator Inlet Temperature (T3/K) 259.5

Evaporator Outlet Pressure (P4/kPa) 268

Evaporator Outlet Temperature (T4/K) 280.5

find the temperatures of the evaporator and condenser in this Vapor-compression refrigeration cycle.

The pressures are calculated in absolute pressure.

## Homework Equations

Basic vapor-compression refrigeration equation.[/B]

## The Attempt at a Solution

[/B] Tried to solve by using the Inlet and outlet enthalpy based on P-h cycle of the refrigerant

qe = h4-h3 qc = h2-h1

= 415.433 – 229.4556 =229.4556 – 480.9

= 185.978 kJ·kg-1 = -251.444 kJ·kg-1

not sure if it's correct...