Dynamic Characteristics of a Simple Brayton Cryocycle

Kutzschbach, A.; Kauschke, M.; Haberstroh, Ch.; Quack, H.

doi:10.1063/1.2202631

Cited by 4 publications

(4 citation statements)

References 1 publication

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“…It has visual interface and can simulate zero or one dimensional system with multi-physics [8]. The simulation work by A. Kutzschbach shows that Dymola could model cryoplant and carry out dynamic simulations [2].…”

Section: Model Descriptionmentioning

confidence: 99%

“…There have been several commercial softwares which support the simulation of the large scale helium cryoplant. A. Kutzschbach et al uses simulation software Dymola to simulate a simple Brayton cryocycle and study the dynamic characteristics of it [2]. C. Deschildre et al build a simulation model of a 400 W at 1.8 K helium cryoplant using Aspen Hysys.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic simulation of the target moderator cryoplant and cryogenic transfer line at the European Spallation Source

Chao

Weisend

Arnold

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Large scale helium cryoplant is an important sub-system in large science facilities. Dynamic simulation by computer is proved to be an effective method to design and optimize large scale helium cryoplant. This study builds a dynamic simulation model for the Target Moderator Cryoplant and the cryogenic transfer line in European Spallation Source using Dymola and Modelon library. This cryoplant can provide 30.3 kW cooling power at 15 K. The main parts of the system including the screw compressor, turbine, heat exchanger, warm gas buffer and gas management panel are simulated. The model is verified by the acceptance data. Dynamic simulation is carried out to study the cooling down process and transient heat load scenarios. The influence of the cryogenic transfer line to the cryoplant is analysed according to simulation results. This simulation could predict the response of the cryoplant to transient heat load and benefit the steady operation of the cryoplant.

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Section: Model Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic simulation of the target moderator cryoplant and cryogenic transfer line at the European Spallation Source

Chao

Weisend

Arnold

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Indeed, several cryogenic companies use it in steady state mode for design and rating purposes [1]. In petrochemical industries, the development and use of dynamic models are becoming very current [2] while the dynamic simulation applied to cryogenic systems started to spread during the last five years [3]. Thus, Maekawa et al [4] published interesting aspects of refrigeration process simulation.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Simulation of an Helium Refrigerator

Deschildre¹,

Barraud²,

Bonnay³

et al. 2008

AIP Conference Proceedings

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A dynamic simulation of a large scale existing refrigerator has been performed using the software Aspen Hysys®. The model comprises the typical equipments of a cryogenic system: heat exchangers, expanders, helium phase separators and cold compressors. It represents the 400 W @ 1.8 K Test Facility located at CEA -Grenoble. This paper describes the model development and shows the possibilities and limitations of the dynamic module of Aspen Hysys®. Then, comparison between simulation results and experimental data are presented; the simulation of cooldown process was also performed.

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“…The number of published papers showing the progress in simulation of cryogenic systems working under unsteady conditions demonstrates the growing interest to such computer application. Two main ways are followed by the designer: the first one is to adapt an existing and widely operated process simulator code [1,2,8]; the other one is to develop a dedicated code including equipment and cycle description, thermodynamic and transport phenomena calculations and a powerful numerical equation solver [3,5,7].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Simulation of a Large Scale Pulsed Load Helium Refrigerator

Briend

Deschildre

Icart

et al. 2010

AIP Conference Proceedings

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A large scale Helium refrigerator is completely designed to cope with pulsed heat load varying from 18kW to 24 kW at a period of 1800s. A dedicated process is defined at the cold end to allow a smooth damping of the cycle parameters (flow, pressure, temperature) in order to get quasi-steady conditions applied to the turbines and compressor station. All the equipment and components including the PID control loops are defined and parameterized in order to optimize the control. Within HYSYS dynamic simulation environment, the overall system with transient heat load applied to the liquid helium bath is simulated satisfactorily confirming the realistic and quasi steady operating conditions.

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Dynamic Characteristics of a Simple Brayton Cryocycle

Cited by 4 publications

References 1 publication

Dynamic simulation of the target moderator cryoplant and cryogenic transfer line at the European Spallation Source

Dynamic simulation of the target moderator cryoplant and cryogenic transfer line at the European Spallation Source

Dynamic Simulation of an Helium Refrigerator

Dynamic Simulation of a Large Scale Pulsed Load Helium Refrigerator

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