A pulse-tube refrigerator using variable-resistance orifice
Journal
Cryogenics
Journal Volume
43
Journal Issue
1
Pages
59-65
Date Issued
2003
Author(s)
Sun B.W.
Abstract
In the present study, we propose a new design of orifice pulse-tube refrigerator (VROPT) using a variable-resistance valve to replace the conventional orifice. The variable-resistance orifice (VRO) is basically a high-speed solenoidal valve similar to the fuel jet device widely used in automobile engines. By changing the frequency and periods of ON and OFF of the valve through an electronic device, we can change the flow resistance of the VRO. This thus provides a possibility for an OPT to be controlled on-line during operation. From the results obtained in the present study, we have shown that VROPT is able to achieve on-line control by regulating the duty cycle d or frequency fv of the VRO. We also show that VROPT will not loss its thermal performance as compared to conventional OPT. © 2003 Elsevier Science Ltd. All rights reserved.
SDGs
Type
journal article