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Second Thermal and Fluids Engineering  Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

EXPERIMENTAL STUDY ON TIO2 NANOPARTICLES IN VAPOUR COMPRESSION REFRIGERATION SYSTEM WORKING WITH LPG

Taiwo O. Babarinde
The Energy and Environment Research Group (TEERG), Mechanical Engineering Department, Covenant University, Ota, Nigeria

O. S. Ohunakin
The Energy and Environment Research Group (TEERG), Mechanical Engineering Department, Covenant University, Ota, Nigeria

D. S. Adelekan
The Energy and Environment Research Group (TEERG), Mechanical Engineering Department, Covenant University, Ota, Nigeria

R.O Leramo
The Energy and Environment Research Group (TEERG), Mechanical Engineering Department, Covenant University, Ota, Nigeria

Sunday O. Oyedepo
The Energy and Environment Research Group (TEERG), Mechanical Engineering Department, Covenant University, Ota, Nigeria

Abstract

Energy consumption and environmental problems have been the major consideration in choosing the choice of electrical appliance in homes and industries. This research work focuses on refrigerator designed to work with a pure Liquefied Petroleum Gas (LPG) which consists of 60% propane (R290) and 40% butane (R600), in this experiment, the pure LPG refrigerant was compared with nano-LPG refrigerant that contained 0.1, 0.3 and 0.5 g/L of TiO2 in a vapour compression refrigeration system. Type K thermocouples were used to measure the evaporating, condensing and discharge temperatures at the outlet of the evaporator, condenser and compressor of the refrigeration system, respectively. The system was instrumented with two pressure gauges at the inlet and outlet of the compressor for measuring the suction and discharge pressures. The experimental result obtained shows that nano-LPG that contained 0.1 g/L of TiO2 gives best performance in terms of power input and Coefficient of Performance (COP) in the experiments. The system COP increases with 6.1 % and the compressor power input reduced with 4.2 % when compared with pure LPG. Therefore, TiO2 nanoparticles enhance the COP and power consumption of LPG in vapour compression system.

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