Journal Pre-proof Numerical and experimental study on a Stirling/pulse tube hybrid refrigerator operating around 30K Biqiang Liu , Zhenhua Jiang , Kongkuai Ying , Wang Yin , Haifeng Zhu , Shaoshuai Liu , Yinong Wu , Deping Dong PII: S0140-7007(20)30460-6 DOI: https://doi.org/10.1016/j.ijrefrig.2020.10.040 Reference: JIJR 4952 To appear in: International Journal of Refrigeration Received date: 6 July 2020 Revised date: 29 October 2020 Accepted date: 30 October 2020 Please cite this article as: Biqiang Liu , Zhenhua Jiang , Kongkuai Ying , Wang Yin , Haifeng Zhu , Shaoshuai Liu , Yinong Wu , Deping Dong , Numerical and experimental study on a Stirling/pulse tube hybrid refrigerator operating around 30K, International Journal of Refrigeration (2020), doi: https://doi.org/10.1016/j.ijrefrig.2020.10.040 This is a PDF ﬁle of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the deﬁnitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its ﬁnal form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 Published by Elsevier Ltd.