Simulation and Evaluation on the Dynamic Performance of a Cryogenic Turbo-Based Reverse Brayton Refrigerator
In this study, a cryogenic turbo-based refrigerator, with high-speed foil gas bearing turboexpander and plate-fin heat exchanger, was presented. For the cooling process of a cryogenic refrigerator is long and complex, the efficient simulation of the dynamic performance is vital for its evaluation an...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/3/531 |
| _version_ | 1819086295370039296 |
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| author | Shanju Yang Zhan Liu Bao Fu |
| author_facet | Shanju Yang Zhan Liu Bao Fu |
| author_sort | Shanju Yang |
| collection | DOAJ |
| description | In this study, a cryogenic turbo-based refrigerator, with high-speed foil gas bearing turboexpander and plate-fin heat exchanger, was presented. For the cooling process of a cryogenic refrigerator is long and complex, the efficient simulation of the dynamic performance is vital for its evaluation and operation. It is difficult to achieve this purpose. Because the cryogenic refrigerator will go through great temperature changes, resulting in dynamic performances of components going to complexity. In this article, the turboexpander was simulated using CFX, and the matching models with expansion works of consumption and utilization were unified and modified. With numerical calculation of heat exchanger, the dynamic simulation model of the refrigerator was improved via MATLAB code. The calculation method of the required input energy of the refrigerator in cooling processes was proposed based on the simulation and integration. The energy efficiency and economy cost of the refrigerator were evaluated under different operation modes. The refrigerator with a motor was more stable than the one with a blower. The refrigerator was tested under different conditions, the results of which agreed well with simulation data. The simulation method is efficient to serve practical applications, improve energy efficiency and reduce costs. |
| first_indexed | 2024-12-21T21:17:59Z |
| format | Article |
| id | doaj.art-479d4133105f45fabdc046805397ff9c |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-21T21:17:59Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-479d4133105f45fabdc046805397ff9c2022-12-21T18:49:57ZengMDPI AGApplied Sciences2076-34172019-02-019353110.3390/app9030531app9030531Simulation and Evaluation on the Dynamic Performance of a Cryogenic Turbo-Based Reverse Brayton RefrigeratorShanju Yang0Zhan Liu1Bao Fu2College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling 712100, Shaanxi, ChinaCollege of Mechanical and Electrical Engineering, Qingdao University of Science and Technology, Qingdao 266061, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaIn this study, a cryogenic turbo-based refrigerator, with high-speed foil gas bearing turboexpander and plate-fin heat exchanger, was presented. For the cooling process of a cryogenic refrigerator is long and complex, the efficient simulation of the dynamic performance is vital for its evaluation and operation. It is difficult to achieve this purpose. Because the cryogenic refrigerator will go through great temperature changes, resulting in dynamic performances of components going to complexity. In this article, the turboexpander was simulated using CFX, and the matching models with expansion works of consumption and utilization were unified and modified. With numerical calculation of heat exchanger, the dynamic simulation model of the refrigerator was improved via MATLAB code. The calculation method of the required input energy of the refrigerator in cooling processes was proposed based on the simulation and integration. The energy efficiency and economy cost of the refrigerator were evaluated under different operation modes. The refrigerator with a motor was more stable than the one with a blower. The refrigerator was tested under different conditions, the results of which agreed well with simulation data. The simulation method is efficient to serve practical applications, improve energy efficiency and reduce costs.https://www.mdpi.com/2076-3417/9/3/531turbo-based refrigeratordynamic simulationevaluationturboexpanderenergy recycleenergy efficiencyeconomy cost |
| spellingShingle | Shanju Yang Zhan Liu Bao Fu Simulation and Evaluation on the Dynamic Performance of a Cryogenic Turbo-Based Reverse Brayton Refrigerator Applied Sciences turbo-based refrigerator dynamic simulation evaluation turboexpander energy recycle energy efficiency economy cost |
| title | Simulation and Evaluation on the Dynamic Performance of a Cryogenic Turbo-Based Reverse Brayton Refrigerator |
| title_full | Simulation and Evaluation on the Dynamic Performance of a Cryogenic Turbo-Based Reverse Brayton Refrigerator |
| title_fullStr | Simulation and Evaluation on the Dynamic Performance of a Cryogenic Turbo-Based Reverse Brayton Refrigerator |
| title_full_unstemmed | Simulation and Evaluation on the Dynamic Performance of a Cryogenic Turbo-Based Reverse Brayton Refrigerator |
| title_short | Simulation and Evaluation on the Dynamic Performance of a Cryogenic Turbo-Based Reverse Brayton Refrigerator |
| title_sort | simulation and evaluation on the dynamic performance of a cryogenic turbo based reverse brayton refrigerator |
| topic | turbo-based refrigerator dynamic simulation evaluation turboexpander energy recycle energy efficiency economy cost |
| url | https://www.mdpi.com/2076-3417/9/3/531 |
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