Phasor Analysis of Pulse Tube Refrigerator
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Mohanta. L.
Atrey, M. D.
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Abstract
A phasor diagram for a pulse tube refrigerator (PTR) is a vectorial representation of mass flow rate, pressure, and temperature at different locations as a function of time. With the help of a phasor diagram, the operation of different types of pulse tube refrigerators can be well understood. Phasor analysis based on these diagrams gives an idea regarding the underlying complex phenomena of the PTR. In the present work, a simplified model has been presented based on the assumption that there is no phase difference between temperature and pressure throughout the working space. The phasor analysis is extended to a two-stage Orifice Pulse Tube Refrigerator (OPTR) and to a Double Inlet PTR (DIPTR). The important contribution of the work is that it highlights the condition for which the DIPTR will work better than the OPTR.
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2008-05
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