Pulse-Tube Refrigeration

Gifford, W. E.; Longsworth, R. C.

doi:10.1115/1.3670530

Cited by 184 publications

(58 citation statements)

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“…Therefore, the PTR is recognized as one of the most promising refrigerators in the future. Since the invention of the basic pulse tube refrigerator (BPTR) in the early 1960s [1], pulse tube refrigerator has experienced several significant structural improvements including the orifice pulse tube refrigerator (OPTR) [2], the double inlet pulse tube refrigerator (DIPTR) [3], the multi-stage pulse tube refrigerator [4] and most recently the inertance tube pulse tube refrigerator (ITPTR) [5]. All of these improvements have led to the technical progress of the PTR, and so far the lowest temperature attained by the pulse tube refrigerator has already reached about 1.3 K [6].…”

Section: Introductionmentioning

confidence: 99%

CFD analysis of thermodynamic cycles in a pulse tube refrigerator

et al. 2010

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a b s t r a c tThe objectives of this paper are to study the thermodynamic cycles in an inertance tube pulse tube refrigerator (ITPTR) by means of CFD method. The simulation results show that gas parcels working in different parts of ITPTR undergo different thermodynamic cycles. The net effects of those thermodynamic cycles are pumping heat from the low temperature part to the high temperature part of the system. The simulation results also show that under different frequencies of piston movement, the gas parcels working in the same part of the system will undergo the same type of thermodynamic cycles. The simulated thermal cycles are compared with those thermodynamic analysis results from a reference. Comparisons show that both CFD simulations and theoretical analysis predict the same type of thermal cycles at the same location. However, only CFD simulation can give the quantitative results, while the thermodynamic analysis is still remaining in quality.

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Section: Introductionmentioning

confidence: 99%

CFD analysis of thermodynamic cycles in a pulse tube refrigerator

et al. 2010

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“…Owing to their high reliability, high efficiency, and compact size, pulse tube refrigerators have attracted much attention in the past decades [1]. Many of them have been developed to cool devices such as infrared detectors, HTS filters, and germanium detectors.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Water-Cooled Heat Exchanger on the Performance of a Pulse Tube Refrigerator

Wang

et al. 2017

Applied Sciences

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Abstract:The water-cooled heat exchanger is one of the key components in a pulse tube refrigerator. Its heat exchange effectiveness directly influences the cooling performance of the refrigerator. However, effective heat exchange does not always result in a good performance, because excessively reinforced heat exchange can lead to additional flow loss. In this paper, seven different water-cooled heat exchangers were designed to explore the best configuration for a large-capacity pulse tube refrigerator. Results indicated that the heat exchanger invented by Hu always offered a better performance than that of finned and traditional shell-tube types. For a refrigerator with a working frequency of 50 Hz, the best hydraulic diameter is less than 1 mm.

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“…The first pulse tube refrigerator, what we now call a basic pulse tube refrigerator, was developed in the mid 1960s [8]. It consists of a closed empty tube called a pulse tube, a regenerator made of stacked screen meshes and a compressor unit, as presented in figure 3(a).…”

Section: Pulse Tube Refrigeratormentioning

confidence: 99%

Thermoacoustic analysis of a pulse tube refrigerator

Biwa

2012

J. Phys.: Conf. Ser.

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Abstract. Thermoacoustic devices use acoustic gas oscillations in place of pistons. They execute mutual energy conversion between work flow and heat flow through the heat exchange between the gas and the channel walls. Understanding of the acoustic field is necessary to control the resulting energy flows in thermoacoustic devices. We will present from experimental point of view the physical mechanism of a pulse tube refrigerator that is one of the travelling wave thermoacoustic heat engines. IntroductionSimplifying heat engine's hardware design while maintaining the highest possible efficiency has been a longstanding desire since the 19th century. One way to achieve this is to eliminate solid pistons from heat engines. A thermoacoustic device uses acoustic gas oscillations in place of pistons and hence it operates essentially with no moving parts.Wheatley [1], Swift [2] and Tominaga [3] proposed work flow I and heat flow Q from a viewpoint of thermodynamics, and successfully gave a framework for understanding the thermoacoustic device working as a prime mover or a cooler. The work flow I is equivalent to the acoustic intensity used in acoustics, and the heat flow Q is the energy flow associated with the hydrodynamic transport of entropy. Thermoacoustic effects such as production and strong damping of I by the temperature gradients [4], and occurrence of Q against the temperature gradient take place in narrow channels where sound wave propagates. Such effects are governed by two factors; one is a nondimensional parameter ωτ [3], a product of an angular frequency ω of the sound wave and a thermal relaxation time τ for a gas to equilibrate with the channel walls, and the other is the acoustic field expressed by the acoustic pressure and the axial acoustic particle velocity.We will present the propagation of acoustic waves in narrow channels [5] and show the physical mechanism of a pulse tube refrigerator that is one of the thermoacoustic devices. Measurements of pressure and velocity oscillations show that pulse tube refrigerator controls the phase difference between them to enhance heat flow through the regenerator [6].

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Pulse-Tube Refrigeration

Cited by 184 publications

References 0 publications

CFD analysis of thermodynamic cycles in a pulse tube refrigerator

CFD analysis of thermodynamic cycles in a pulse tube refrigerator

Influence of the Water-Cooled Heat Exchanger on the Performance of a Pulse Tube Refrigerator

Thermoacoustic analysis of a pulse tube refrigerator

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