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المؤلفSleiti, Ahmad K.
المؤلفAl-Ammari, Wahib A.
المؤلفGhani, Saud
تاريخ الإتاحة2023-05-16T09:07:32Z
تاريخ النشر2023
اسم المنشورJournal of Energy Storage
المصدرScopus
الرقم المعياري الدولي للكتاب2352152X
معرّف المصادر الموحدhttp://dx.doi.org/10.1016/j.est.2023.107471
معرّف المصادر الموحدhttp://hdl.handle.net/10576/42787
الملخصLiquid hydrogen is a superior alternative for the current energy storage methods and energy carriers as it has higher energy density and cleanliness. However, hydrogen liquefaction is an energy-intensive process. In particular, the precooling process of hydrogen consumes a tremendous portion of about 30 % of the total compression power of the plant. Several previous studies introduced various pure-refrigerant and single mixed refrigerant (SMR) precooling processes, however, their specific energy consumption (SEC) still very high especially at large-scale capacities. Therefore, this study presents a novel, efficient, and large-scale dual-mixed refrigerant (DMR) process to precool the hydrogen from 25 °C to -192 °C at a pressure of 21 bar. New heavyweight-based mixed refrigerant MR1 and lightweight-based mixed refrigerant MR2 are developed for the DMR process using a new-proposed systematic approach. The proposed DMR process is capable of handling a wide range of hydrogen flow from 100 TPD to 1000 TPD with SEC of 0.862 kWh/kgH2Feed, which is 20.33 % lower than the most competitive SMR process available in the literature. Based on the sensitivity analysis, further optimization of the DMR operating parameters reduced the SEC to 0.833 kWh/kgH2Feed at an optimal capacity of 500 TPD. Furthermore, the COP of the new process is improved by 14.47 % and the total annualized cost is reduced by 12.24 %. Compared to five other technologies that use the pure-refrigerant and other SMR precooling processes, the DMR reduces the SEC by 39.0 % to 63.0 %. The novel precooling process presented herein has the potential to drive the development of large-scale hydrogen liquefaction processes.
راعي المشروعThe work presented in this publication was made possible by NPRP-S grant # [ 11S-1231-170155 ] from the Qatar National Research Fund (a member of Qatar Foundation). The findings herein reflect the work, and are solely the responsibility, of the authors.
اللغةen
الناشرElsevier
الموضوعExergy efficiency
Hydrogen precooling
Large-scale hydrogen liquefaction
LH2
Mixed refrigerant
Thermoeconomic analysis
العنوانNovel dual-mixed refrigerant precooling process for high capacity hydrogen liquefaction plants with superior performance
النوعArticle
رقم المجلد66
dc.accessType Open Access


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