Flow condensation in horizontal tubes
نویسندگان
چکیده
Article history: Received 30 April 2013 Received in revised form 20 June 2013 Accepted 20 June 2013 Available online 27 July 2013
منابع مشابه
Two Phase Flow Patterns During Condensation of Steam in Micro-Tubes
Flow visualization of two phase flow pattern of steam during condensation process in separate horizontal quartz micro-tubes with inner diameter ranging from 70-675 m was conducted. Two main kinds of flow patterns were observed: annular flow and slug flow, which both were nearly symmetrical. The annular flow also can be divided into two kinds: annular flow and annular-wave flow. The effects of t...
متن کاملFlow Patterns During Condensation of Pure Refrigerants on Enhanced Tubes Under High Vapour Velocity
This work experimentally investigates the effect of vapour velocity during condensation of a ref rigerant on the outside of a single horizontal enhanced tube with particular reference to the fluid-dynamic mechanisms indu ced by vapour shear stress, surface tension and gravity on the condensate flow. More than 70 experimental runs were done in a transparent test section in order to directly o bs...
متن کاملAn Experimental Study On Condensation Of R134a In A Multi-Port Extruded Tube
In the present study, the local characteristics of pressure drop and heat transfer are investigated experimentally for the condensation of a pure refrigerant R134a in multi-port extruded tubes of 8 channels in 1.36mm hydraulic diameter and 19 channels in 0.80mm hydraulic diameter. The experimental data of frictional pressure drop (F.P.D.) and condensation heat transfer coefficient (H.T.C.) are ...
متن کاملTwo Phase Frictional Pressure Drop of Carbon Dioxide in Horizontal Micro Tubes
Two-phase frictional pressure drop data were obtained for condensation of carbon dioxide in single horizontal micro tube of inner diameter ranged from 0.6 mm up to 1.6 mm over mass flow rates from 2.5*10 to 17*10 kg/s and vapor qualities from 0.0 to 1.0. The inlet condensing pressure is changed from 33.5 to 45 bars. The saturation temperature ranged from -1.5 C up to 10 C. These data have then ...
متن کاملCondensation heat transfer and pressure drop in flat tubes having different aspect ratio
In this study, condensation heat transfer coefficients of R-410A were obtained in flattened stainless tubes made from 5.0 mm inner diameter round tubes. The test range covered saturation temperature 45 , heat flux 10 °C kW/m, mass flux 100~400 kg/ms and quality 0.2~0.8. Results showed the effect of aspect ratio on condensation heat transfer coefficient was dependent on the flow pattern. For ann...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2013