کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7915617 1511022 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermodynamic design of hydrogen liquefaction systems with helium or neon Brayton refrigerator
ترجمه فارسی عنوان
طراحی ترمودینامیکی سیستم های مایع سازی هیدروژن با یخچال و فریزر هلیوم یا نئون بریون
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
A thermodynamic study is carried out for the design of hydrogen liquefaction systems with helium (He) or neon (Ne) Brayton refrigerator. This effort is motivated by our immediate goal to develop a small-capacity (100 L/h) liquefier for domestic use in Korea. Eight different cycles are proposed and their thermodynamic performance is investigated in comparison with the existing liquefaction systems. The proposed cycles include the standard and modified versions of He Brayton refrigerators whose lowest temperature is below 20 K. The Brayton refrigerator is in direct thermal contact with the hydrogen flow at atmospheric pressure from ambient-temperature gas to cryogenic liquid. The Linde-Hampson system pre-cooled by a Ne Brayton refrigerator is also considered. Full cycle analysis is performed with the real properties of fluids to estimate the figure of merit (FOM) under an optimized operation condition. It is concluded that He Brayton refrigerators are feasible for this small-scale liquefaction, because a reasonably high efficiency can be achieved with simple and safe (low-pressure) operation. The complete cycles with He Brayton refrigerator are presented for the development of a prototype, including the ortho-to-para conversion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cryogenics - Volume 91, April 2018, Pages 68-76
نویسندگان
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