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Numerical Thermal Analysis and 2-D CFD Evaluation Model for An Ideal Cryogenic Regenerator
Regenerative cryocoolers such as Stirling, Gifford–McMahon, and pulse tube cryocoolers possess great merits such as small size, low cost, high reliability, and good cooling capacity. These merits led them to meet many IR and superconducting based application requirements. The regenerator is a vital...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7230485/ https://www.ncbi.nlm.nih.gov/pubmed/32235571 http://dx.doi.org/10.3390/mi11040361 |
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author | Almtireen, Natheer Brandner, Jürgen J. Korvink, Jan G. |
author_facet | Almtireen, Natheer Brandner, Jürgen J. Korvink, Jan G. |
author_sort | Almtireen, Natheer |
collection | PubMed |
description | Regenerative cryocoolers such as Stirling, Gifford–McMahon, and pulse tube cryocoolers possess great merits such as small size, low cost, high reliability, and good cooling capacity. These merits led them to meet many IR and superconducting based application requirements. The regenerator is a vital element in these closed-cycle cryocoolers, but the overall performance depends strongly on the effectiveness of the regenerator. This paper presents a one-dimensional numerical analysis for the idealized thermal equations of the matrix and the working gas inside the regenerator. The algorithm predicts the temperature profiles for the gas during the heating and cooling periods, along with the matrix nodal temperatures. It examines the effect of the regenerator’s length and diameter, the matrix’s geometric parameters, the number of heat transfer units, and the volumetric flow rate, on the performance of an ideal regenerator. This paper proposes a 2D axisymmetric CFD model to evaluate the ideal regenerator model and to validate its findings. |
format | Online Article Text |
id | pubmed-7230485 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-72304852020-05-22 Numerical Thermal Analysis and 2-D CFD Evaluation Model for An Ideal Cryogenic Regenerator Almtireen, Natheer Brandner, Jürgen J. Korvink, Jan G. Micromachines (Basel) Article Regenerative cryocoolers such as Stirling, Gifford–McMahon, and pulse tube cryocoolers possess great merits such as small size, low cost, high reliability, and good cooling capacity. These merits led them to meet many IR and superconducting based application requirements. The regenerator is a vital element in these closed-cycle cryocoolers, but the overall performance depends strongly on the effectiveness of the regenerator. This paper presents a one-dimensional numerical analysis for the idealized thermal equations of the matrix and the working gas inside the regenerator. The algorithm predicts the temperature profiles for the gas during the heating and cooling periods, along with the matrix nodal temperatures. It examines the effect of the regenerator’s length and diameter, the matrix’s geometric parameters, the number of heat transfer units, and the volumetric flow rate, on the performance of an ideal regenerator. This paper proposes a 2D axisymmetric CFD model to evaluate the ideal regenerator model and to validate its findings. MDPI 2020-03-30 /pmc/articles/PMC7230485/ /pubmed/32235571 http://dx.doi.org/10.3390/mi11040361 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Almtireen, Natheer Brandner, Jürgen J. Korvink, Jan G. Numerical Thermal Analysis and 2-D CFD Evaluation Model for An Ideal Cryogenic Regenerator |
title | Numerical Thermal Analysis and 2-D CFD Evaluation Model for An Ideal Cryogenic Regenerator |
title_full | Numerical Thermal Analysis and 2-D CFD Evaluation Model for An Ideal Cryogenic Regenerator |
title_fullStr | Numerical Thermal Analysis and 2-D CFD Evaluation Model for An Ideal Cryogenic Regenerator |
title_full_unstemmed | Numerical Thermal Analysis and 2-D CFD Evaluation Model for An Ideal Cryogenic Regenerator |
title_short | Numerical Thermal Analysis and 2-D CFD Evaluation Model for An Ideal Cryogenic Regenerator |
title_sort | numerical thermal analysis and 2-d cfd evaluation model for an ideal cryogenic regenerator |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7230485/ https://www.ncbi.nlm.nih.gov/pubmed/32235571 http://dx.doi.org/10.3390/mi11040361 |
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