Impact of coiled type inertance tube on performance of pulse tube refrigerator

Liu, Shaoshuai; Chen, Xi; Zhang, Ankuo; Kan, Ankang; Zhang, Hua; Wu, Yinong

doi:10.1016/j.applthermaleng.2016.06.154

Cited by 19 publications

(3 citation statements)

References 12 publications

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“…The research methods can be found in the authors' previous articles. 10,22,23 A photograph of the experimental system is shown in Figure 10. The regenerator, CHX, and pulse tube are enclosed in a vacuum chamber to reduce the convective heat transfer losses.…”

Section: Methodsmentioning

confidence: 99%

“…The structure of the phase shifter is designed and optimized for a heat load of 10 W at 90 K. In the design and optimization process of the phase shifter, the structural parameters, operating parameters, coil type, and temperature are all considered. The research methods can be found in the authors' previous articles . A photograph of the experimental system is shown in Figure .…”

Section: Experimental Verificationmentioning

confidence: 99%

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Effects of cold‐end temperature and heat load on the cooling characteristics of a pulse tube refrigerator

Liu

Jiang

Ding

et al. 2019

Energy Science & Engineering

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A pulse tube refrigerator (PTR) was developed to operate at different cooling capacities to meet the requirements of various applications. Changes in the thermal loads or the long operating time of the PTR will influence the cold conditions (cold‐end temperature and heat load), leading to a deviation of the cooling performance from the optimal design conditions. The basic principles of the mass flow characteristics of the PTR are constructed based on enthalpy phase modulation, which is helpful for comprehending the relationships between cold‐end parameters and other parameters. A REGEN model is introduced in which different mass flows at the cold‐end are considered to simulate the effects of the cold‐end parameters on the performance of the regenerator. The influences of the cold‐end temperature and heat load on the cooling performance are investigated by using a coupling model of a DeltaEC model and a REGEN model. In addition, some experiments are performed on a PTR working at different cold‐end temperatures and heat load. The experimental results are in good agreement with the simulation results. The cooling performance of the PTR is influenced by the average pressure and operating frequency of different cooling states. Relative Carnot efficiencies of 12.2% for 4 W@60 K with a specific power of 33 W/W and 16.1% for 15 W @120 K with a specific power of 9 W/W can be achieved by the PTR using different operating parameters.

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Section: Methodsmentioning

confidence: 99%

Section: Experimental Verificationmentioning

confidence: 99%

Effects of cold‐end temperature and heat load on the cooling characteristics of a pulse tube refrigerator

Liu

Jiang

Ding

et al. 2019

Energy Science & Engineering

Self Cite

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“…CFD software, such as Fluent, is a powerful tool for Navier-Stokes mathematical solutions that have a finite choice of volumes, and have shown that the pulse tube refrigerator (PTR) was subject to CFD simulations [23]. The pressure inlet limits for DIPTR simulation at constant temperatures or thermal flow limits was set at a single tube end, and at the external heat exchange and cold-end simulation [24]. The inertance-type pulse tube refrigerator ITPTR model was limited by the fact that, compared to the DIPTR mode, it cannot reach a much lower temperature [25].…”

Section: Introductionmentioning

confidence: 99%

Impact of Varying Load Conditions and Cooling Energy Comparison of a Double-Inlet Pulse Tube Refrigerator

et al. 2020

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Modeling and optimization of a double-inlet pulse tube refrigerator (DIPTR) is very difficult due to its geometry and nature. The objective of this paper was to optimize-DIPTR through experiments with the cold heat exchanger (CHX) along the comparison of cooling load with experimental data using different boundary conditions. To predict its performance, a detailed two-dimensional DIPTR model was developed. A double-drop pulse pipe cooler was used for solving continuity, dynamic and power calculations. External conditions for applicable boundaries include sinusoidal pressure from an end of the tube from a user-defined function and constant temperature or limitations of thermal flux within the outer walls of exchanger walls under colder conditions. The results of the system’s cooling behavior were reported, along with the connection between the mass flow rates, heat distribution along pulse tube and cold-end pressure, the cooler load’s wall temp profile and cooler loads with varied boundary conditions i.e. opening of 20% double-inlet and 40-60% orifice valves, respectively. Different loading conditions of 1 and 5 W were applied on the CHX. At 150 K temperature of the cold-end heat exchanger, a maximum load of 3.7 W was achieved. The results also reveal a strong correlation between computational fluid dynamics modeling results and experimental results of the DIPTR.

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