Control of DC gas flow in a single-stage double-inlet pulse tube cooler

Wang, C.; Thummes, G.; Heiden, C.

doi:10.1016/s0011-2275(98)00070-8

Cited by 27 publications

(8 citation statements)

References 10 publications

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“…This overshoot is also present in other one-dimensional simulations of single-inlet pulse tubes, see [35], [82], [84]. The same effect was reported in [83] for a double-inlet pulse tube. Is this effect real or is it just an artifact of the simulation model?…”

supporting

confidence: 80%

Numerical Simulation of Pulse-Tube Refrigerators

Lyulina

Mattheij²,

Tijsseling³

et al. 2004

International Journal of Nonlinear Sciences and Numerical Simulation

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supporting

confidence: 80%

Numerical Simulation of Pulse-Tube Refrigerators

Lyulina

Mattheij²,

Tijsseling³

et al. 2004

International Journal of Nonlinear Sciences and Numerical Simulation

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“…Because the DC gas flow leads to a convective heat loss, the performance of the systems is seriously degraded [3,4]. The convective heat loss should be reduced by decreasing the DC gas flow in order to improve the performance [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

Visualization of oscillating flow in a double-inlet pulse tube refrigerator with a diaphragm inserted in a bypass-tube

Shiraishi

Murakami

2012

Cryogenics

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The double-inlet pulse tube refrigerator that has a diaphragm inserted in a bypass-tube, which enabled it to transmit a pressure oscillation whereas to obstruct a DC gas flow, was manufactured and tested. The oscillating flow behavior inside of the refrigerator was studied by using a smoke-wire flow visualization technique. It was found that if the diaphragm was optimized, the performance would be improved more than that of the refrigerator with a bypass valve due to the increase in the P-V work of the gas and the decrease in the convective heat loss caused by a secondary flow.

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“…The bypass tube produces a closed loop fluid path through the regenerator and pulse tube, thus inducing a DC flow in the path [2]. A recent experimental study showed that DC flow seriously degrades the cooling performance of pulse tube refrigerators, especially in refrigerators whose cooling capability can reach the 4 K temperature level [3,4]. A recent experimental study showed that DC flow seriously degrades the cooling performance of pulse tube refrigerators, especially in refrigerators whose cooling capability can reach the 4 K temperature level [3,4].…”

Section: Introductionmentioning

confidence: 99%

Control of Secondary Flow in a Double-inlet Pulse Tube Refrigerator

Shiraishi¹,

Murakami²,

Nakano³

et al. 2006

AIP Conference Proceedings

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Secondary flow in a double-inlet pulse tube refrigerator with a double bypass valve configuration was evaluated to determine the advantage of this configuration in controlling the secondary flow over a conventional single valve configuration. In the double-valve configuration two needle valves was connected in parallel and their respective valve directions were in opposite directions, namely, one valve was directed toward the hot end and the other toward the inlet of the regenerator. The effects of valve configuration on the flow behavior of the secondary flow, on the cooling performance, and on the pressure-volume (work) diagram for gas were investigated. The secondary flow was visualized by using a smoke-wire flow visualization technique, and cooling performance was estimated based on the temperature difference between the hot and cold ends. Results showed that the double-valve configuration allowed the operating conditions of the refrigerator to be optimized to maximize the work and minimize the heat loss by the secondary flow, whereas the single-valve configuration did not leave room for such adjustment. After optimization, however, the singlevalve configuration still showed fairly good performance, comparable to that of the doublevalve configuration.

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Control of DC gas flow in a single-stage double-inlet pulse tube cooler

Cited by 27 publications

References 10 publications

Numerical Simulation of Pulse-Tube Refrigerators

Numerical Simulation of Pulse-Tube Refrigerators

Visualization of oscillating flow in a double-inlet pulse tube refrigerator with a diaphragm inserted in a bypass-tube

Control of Secondary Flow in a Double-inlet Pulse Tube Refrigerator

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