Thermo-fluidic characteristics and performance in a distribute heating bubble pump generator
نویسندگان
چکیده
In some thermally driven two-phase natural circulation systems, bubble pumps serve as the key driving powers for cycles. Recently a type of distribute heating pump generator (BPG) is gradually receiving attention due to its compact structure and great potentials utilize solar energy low-grade waste heat recovery. The BPG provides variety promising features (e.g., passive transfer, enhanced reliability), which can benefit advancing transfer technology. For primary study, we performed an experiment in distributed BPG. Through utilizing multiple lift tubes partial visualization configurations, it accesses observe flow pattern transition monitor instability, thus explore underlying mechanisms affecting performance. Results showed that input immersion height were crucial parameters enable operation With low or high inlet water subcooling level, within was unstable with intermittent interruptions. As increased, fluid became more stable, vapor generation increased linearly, while lifted liquid rate initially then decreased. Correspondingly, at outlet section changed from slug churn flow, annular flow. higher was, needed transition. It regime maximum liquid. At lower reflux obvious affected stability well lifting stable faster, generated less depending on subcooling. general, better performance (both increased) smaller level system pressure. This study highlights evolution stability, helpful reliable design effective
منابع مشابه
effect of bataine and sulphate supplement on wool and milk characteristics and lambs performance in naine ewes
تعداد 20 رأس میش نژاد نائینی 6+-24 ماهه، با میانگین وزن 2/3-+40 کیلوگرم، همراه با 20 رأس بره های آنها در قالب طرح کاملا تصادفی اثر بتائین و مکمل سولفات بر خصوصیات شیر و پشم و عملکرد بره ها بررسی شد. میش ها بطور تصادفی در چهار تیمار قرار گرفتند. تیمارها عبارت بودند از: 1-گروه شاهد 2-بتائین (05/0 درصد ماده خشک) 3-سولفات (24/0 سولفور درصد ماده خشک 4-بتائین هرماه با سولفات. جیره غذائی طبق nrc با مح...
15 صفحه اولSteady-State Performance Characteristics of Photovoltaic System Coupled with a Centrifugal Water Pump
In this article our objective is to obtain steady state characteristics of shunt, series, and separately excited DC motors coupled with a centrifugal water pump supplied through a step-up, step-down, and cuk converter from photovoltaic generator. We assume that there are no storage batteries and, of course, the system must operate on maximum utilization i.e. maximum water must be pumped. It is ...
متن کاملSteady-State Performance Characteristics of Photovoltaic System Coupled with a Centrifugal Water Pump
In this article our objective is to obtain steady state characteristics of shunt, series, and separately excited DC motors coupled with a centrifugal water pump supplied through a step-up, step-down, and cuk converter from photovoltaic generator. We assume that there are no storage batteries and, of course, the system must operate on maximum utilization i.e. maximum water must be pumped. It is ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Refrigeration-revue Internationale Du Froid
سال: 2022
ISSN: ['1879-2081', '0140-7007']
DOI: https://doi.org/10.1016/j.ijrefrig.2021.09.031