A vapor-compression refrigeration system is conventional except that a countercurrent heat exchanger is installed to subcool the liquid from the condenser by heat exchange with the vapor stream from the evaporator. The minimum temperature difference for heat transfer is 5°C. Tetrafluoroethane is the refrigerant (Table 9.1, Fig. F.2), evaporating at -8°C and condensing at 24 °C. The heat load on the evaporator is 2000 kJ/s.
A vapor-compression refrigeration system is conventional except that a countercurrent heat exchanger is installed to subcool the liquid from the condenser by heat exchange with the vapor stream from the evaporator. The minimum temperature difference for heat transfer is 5°C. Tetrafluoroethane is the refrigerant (Table 9.1, Fig. F.2), evaporating at -8°C and condensing at 24 °C. The heat load on the evaporator is 2000 kJ/s.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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kindly answer this chemical engineering thermodynamics problem SKETCH/DRAW necessary diagrams and illustrations. State all assumptions, conditions and conclusions
properly. Thank you so much
Transcribed Image Text:(a) If the compressor efficiency is 72%, what is the power requirement? *
DONE
(b) How does this result compare with the power required by the compressor if
the system operates without the heat exchanger? *
O DONE
(c) How do the refrigerant circulation rates cómpare for the two cases? *
OS DONEanned with CamScanner
Transcribed Image Text:A vapor-compression refrigeration system is conventional except that a countercurrent heat exchanger is
installed to subcool the liquid from the condenser by heat exchange with the vapor stream from the
evaporator. The minimum temperature difference for heat transfer is 5°C. Tetrafluoroethane is the
refrigerant (Table 9.1, Fig. F.2), evaporating at -8°C and condensing at 24 °C. The heat load on the
evaporator is 2000 kJ/s.
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