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Published in:
2021 | OriginalPaper | Chapter
Numerical Simulation of an Inertance Pulse Tube Refrigerator Using a Mixture of Refrigerant
Authors : Debashis Panda, M. Kumar, A. K. Satapathy, Sunil Kr Sarangi
Published in: Advances in Air Conditioning and Refrigeration
Publisher: Springer Singapore
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Abstract
A numerical study is conducted to investigate the impact of mixture of refrigerant on the cooling performance of an inertance pulse tube refrigerator (IPTR). The influence of helium–hydrogen mixture on the cooling capacity is investigated numerically. Conservations of mass, momentum and energy equations are solved in the computational domain of an IPTR by finite volume method using FLUENT. Properties of helium–hydrogen mixture have been estimated by utilizing ideal gas law and are provided to the FLUENT as user-defined functions. It is seen that with an increase in the molar percentage of hydrogen than helium in a helium–hydrogen mixture, it enhances the cooling capacity, attains a maximum value and then decreases. It is examined that at a composition of about 50% hydrogen and 50% helium, the cooling capacity increases by about 11.51%, and further increase in hydrogen percentage than helium reduces the capacity.