In uence of unsuitable operational conditions on the transient performance of a small hydrogen lique er
عنوان مقاله: In uence of unsuitable operational conditions on the transient performance of a small hydrogen lique er
شناسه ملی مقاله: JR_IJHFC-3-3_003
منتشر شده در شماره 3 دوره 3 فصل Summer در سال 1395
شناسه ملی مقاله: JR_IJHFC-3-3_003
منتشر شده در شماره 3 دوره 3 فصل Summer در سال 1395
مشخصات نویسندگان مقاله:
Ali Saberimoghaddam - Department of Chemistry and Chemical Engineering, Faculty of Chemical Engineering, Malek Ashtar University of Technology (MUT), Lavizan, Tehran, Iran
Mohammad Mahdi Bahri Rasht Abadi - Department of Chemistry and Chemical Engineering, Faculty of Chemical Engineering, Malek Ashtar University of Technology (MUT), Lavizan, Tehran, Iran
خلاصه مقاله:
Ali Saberimoghaddam - Department of Chemistry and Chemical Engineering, Faculty of Chemical Engineering, Malek Ashtar University of Technology (MUT), Lavizan, Tehran, Iran
Mohammad Mahdi Bahri Rasht Abadi - Department of Chemistry and Chemical Engineering, Faculty of Chemical Engineering, Malek Ashtar University of Technology (MUT), Lavizan, Tehran, Iran
Joule-Thomson cooling systems are used in refrigeration processes such as cryogenic gas liquefaction. Although extensive studies have been carried out by researchers, most studies include cryogenic heat exchangers and their associated elds. In the current study, an attempt was made to indicate the effect of using inappropriate operational conditions in a cryogenic Joule-Thomson cooling system including a recuperative heat exchanger, expansion valve, and collector. Mass ow rate and operational pressure were selected as design parameters while cool-down time and nal temperature of highpressure gas at heat exchanger outlet were considered as responses. The results showed that using a mass ow rate smaller than the design value led to considerable decrease in performance. Operational pressure had less effect on cool-down time. Increasing the pressure had no signi cant effect on the gas temperature at the expansion valve inlet for high mass ow rates. Using unsuitable values for the mass ow rate and operational pressure might lead to failed liquefaction despite using a heat exchanger with high effectiveness
کلمات کلیدی: Heat exchanger,Joule-Thomson,Transient,Hydrogen,Refrigeration
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/704925/