Design and optimization of heat exchanger in coaxial pulse tube cryocooler working above 100 K
|Corresponding Author||Pan，Changzhao; Wang，Wei|
The coaxial pulse tube cryocooler (PTC) has the advantages of without moving parts at the cold end, compactness and high-efficiency, it shows great application potential in many fields. The present work numerically and experimentally investigated a coaxial PTC working at temperature range from 90 K to 260 K. To improve its efficiency, the exergy analysis method was used to study the distribution of available energy loss in the coaxial PTC. To reduce one of the main available energy losses coming from the heat exchanger, three types of heat exchanger, slit, circular hole (CH) and copper mesh (CM), were analyzed and optimized based on the law of conservation of energy. Finally, two different cold end and hot end heat exchangers are designed respectively in the experiment. The results show the optimized pulse tube cooler can supply 50 W cooling power at 185.3 K with 200 W input power. To the best of our knowledge, its relative Carnot efficiency (16% at 165 K) lies one of the best results in the world. The experimental results also show that the refrigeration efficiency of the present PTC could be much improved by optimizing its operating parameter. In summary, the present PTC can work efficiently at a wide temperature range from 90 K to 260 K, which shows great potential candidate for small refrigerators such as vaccine preservation, organ freezing transportation and outdoor preservation of wildlife samples.
 ; [2020B1515120084]
|WOS Research Area|
Thermodynamics ; Physics
Thermodynamics ; Physics, Applied
|WOS Accession No|
|ESI Research Field|
Cited Times [WOS]:0
|Document Type||Journal Article|
|Department||Department of Physics|
1.CAS Key Laboratory of Cryogenics,Technical Institute of Physics and Chemistry,Beijing,100190,China
2.University of Chinese Academy of Sciences,Beijing,100049,China
3.Songshan Lake Materials Laboratory,University Innovation Park,Dongguan City,Guangdong Province,523808,China
4.Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
5.International Quantum Academy,Shenzhen,518048,China
|Corresponding Author Affilication||Department of Physics; Institute for Quantum Science and Engineering|
Duan，Yanbo,Pan，Changzhao,Wang，Wei,et al. Design and optimization of heat exchanger in coaxial pulse tube cryocooler working above 100 K[J]. CRYOGENICS,2023,129.
Duan，Yanbo,Pan，Changzhao,Wang，Wei,Li，Laifeng,&Zhou，Yuan.(2023).Design and optimization of heat exchanger in coaxial pulse tube cryocooler working above 100 K.CRYOGENICS,129.
Duan，Yanbo,et al."Design and optimization of heat exchanger in coaxial pulse tube cryocooler working above 100 K".CRYOGENICS 129(2023).
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