Experimental performance evaluation of heat pump by using CO2 as a refrigerant

International Conference on Advances in Materials and Manufacturing Applications 2016

Venkatesh, V.K.^1 ; Basavaraju, M.G.^1 ; Sreenivas Rao, K.V.^1

Department of Mechanical Engineering, Siddaganga Institute of Technology, Tumakuru Karnataka

572103, India^1

关键词: Coefficient of Performance;    Experimental performance evaluations;    Global warming potential;    Heat pumps;    LMTD;    Logarithmic-mean temperature differences;    Outlet-water temperatures;    Ozone depletion potential;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/149/1/012209/pdf
DOI  :  10.1088/1757-899X/149/1/012209

来源: IOP

【 摘 要 】

In this experiment the refrigerant used is CO2which is naturally available, eco friendly, economical, non toxic, non flammable and non corrosive. Its Ozone Depletion Potential (ODP) is zero and minimum Global Warming Potential (GWP). The performance evaluation of prototype vapor compression heat pump model was performed and evaluated the different parameters like COP (Co-efficient of performance), LMTD (Logarithmic mean temperature difference) and outlet water temperature of condenser. The experiment is carried out for two different condensers by varying mass flow rate and pressure. The water in the shell side was heated by absorbing heat from refrigerants in the tube side of condensers by counter flow heat exchanging method. The experimental result indicates fairly good COP with the use of CO2 refrigerant. These advantages of CO2as a refrigerant favors the replacement for globally used refrigerant with CO2.