INTERNATIONAL JOURNAL OF ENGINEERING, SCIENCE AND - Volume 6, Issue 8,, December 2017 (Special Issue)

Pages: 496-502

Date of Publication: 24-Dec-2017

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Effect of Pressure on Thermo Physical Properties of MixedRefrigerantR-290andR-600afor High Capacity Vapour Compression Refrigeration System (VCRS

Author: Siddharth Kumar Nayak? Ravikiran Tadepalli?? SallooriRithwikGoud??? Vishnu Saini

Category: Engineering, Science and Mathematics

Abstract:

Theconceptofmixedrefrigerantfluidshasemergedduringthepastfewdecadesfrom16thcenturyduetoitssuperior thermo physical propertiesas compared tobasefluids.Itisprimarilyused ascoolantsinheattransferequipmentsuch asheatexchangers,electroniccoolingsystemandradiators.Inthepresentinvestigation,analyze thethermo physical properties,variousparametersbyconsidering10gmsof mixedrefrigerant of propaneandISO-butaneatdifferent compositions.Resultsarepresentedforsimulationscarried outatatemperaturerange of 300-350Kandapressure rangeof3MPato7MPa.It isconcludedfromtheresultsthatasthetemperatureincreases,specificheat ofmixed refrigerantdecreases.Similarly,thermal conductivityincreasewithan increaseintemperature foramixed refrigerant atdifferentcompositions. Further,asthepressureisvariedfrom3MPato7MPawhilekeepingthetemperature constant at350K,thespecificheatdecreaseby 5.2%aswell as thermal conductivityfollowsthe oppositetrendandis increasedby 6.9%.

Keywords: Refrigerants, Thermophysical, Base fluids, heat transfer, Coolants, Heat exchangers