Energy evaluation of R152a as drop in replacement for R134a in cascade refrigeration plants
نویسندگان
چکیده
منابع مشابه
evaluation of sadr eminence in safavid period
چکیده: یکی از دوره های مهم تاریخی ایران به لحاظ تأمین استقلال ملی مذهبی و حتی تأثیر آن بر فرهنگ و مذهب ایرانیان، دوره صفویه است. رسمیت دادن و رواج مذهب شیعه توسط شاه اسماعیل اول، یکی از مهمترین اقدامات این دولت محسوب می شود. بنابراین برای اجرای این سیاست، وی منصب صدارت را به عنوان منصبی مذهبی- حکو متی ایجاد کرد .این منصب از دوره ی تیموریان ایجاد شده بود ولی در اواخر این دوره اهمیت بیشتری یافت...
15 صفحه اولA Performance comparison of vapour compression refrigeration system using various alternative refrigerants
A performance analysis on a vapour compression refrigeration system with various refrigerants mixture of R152a, RE170, R600a, and R290 were done for various mixture ratios and their results were compared with R134a as possible alternative replacement. The results showed that all of the alternative refrigerants investigated in the analysis except R431A, [R 152a (29%), R290 (71%)] have a slightly...
متن کاملComparison Study of Isceon 49 (A Drop-in Replacement for R12) with R12 and R134a
Due to the undesirable environmental consequences ofR12, there is a great challenge to find a suitable substitute for Rl2. A new refrigerant blend Rl34a!R218/R600a (88'Yoi9'Yol 3%) called JSCEON 49 has been developed as a long term, zero ozone depletion-potential replacement for Rl2. A computer program was written to calculate the cycle characteristics, such as cooling capacity, coefficient of ...
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15 صفحه اولExperiences with the Refrigerant R134a as a "Drop-In" Replacement in a Large Water-Water-Heat Pump
A considerable amount of large scale heat pumps working mainly with Rl2 but also partially with Rll4 has been installed in Germany in the past. -As considerable investments have been made, a conversion from Rl2 to Rl34a seems to be an important task. Due to this reason a research project has been started at the University of Hannover to evaluate the possibility of such a conversion. To achieve ...
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ژورنال
عنوان ژورنال: Applied Thermal Engineering
سال: 2017
ISSN: 1359-4311
DOI: 10.1016/j.applthermaleng.2016.09.010