Refrigeration and Air Conditioning Technology - Package
Refrigeration and Air Conditioning Technology - Package
8th Edition
ISBN: 9781337217989
Author: TOMCZYK
Publisher: CENGAGE L
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Chapter 10, Problem 16RQ

A technician takes the following readings on an R-404A refrigeration system:
Head pressure = 205 psig
Suction pressure = 30 psig
Condenser outlet temperature = 80°F
Evaporator outlet temperature = 10°F
Using the pressure/temperature chart in Figure 10.25, find the condenser subcooling and evaporator superheat amounts.

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Steam is supplied to a two-stage turbine at 48 bar and 400 °C. It expands in the first turbine until it is just dry saturated, then it is re-heated to 400 °C and expanded through the second-stage turbine. The condenser pressure is 0.04 bar. PI High-P turbine Low-P turbine Reheater Boiler P4 = Ps = Prcheat Condenser What is the formula number according to file 2 to find the specific enthalpy at phase 6? Ifo
General types of  Expansion device and Condenser used in a refrigeration system ?
To produce more power the upper management decided to modify the power plant by placing the stage 2 as a saturated liquid stage. The condenser site was planned to leave as it is with the same parameters. The flow rates stays the same. See the figure below for the data. Again, this an ideal case: S2-S1; S3=S4. Boiler P1=36.29bar Lin Turbine Condenser P2=2.26 bar -2 Saturated vapor T6=? 6 Cour ||T5=15C 5 Cooling water Pump 3 saturated liquid
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