Author: Bogumil BieniaszPublisher:
ISBN:
Category :
Languages : en
Pages : 23
Book Description
The Dropwise Condensation of Steam on a Gold-plated Tube at Atmospheric Pressure
Author: Bogumil BieniaszPromotion of Dropwise Condensation of Steam on Fouled Brass Tubes by Injection of Promoter at Sub-atmospheric Pressure
Author: Bernard David John OsmentPublisher:
ISBN:
Category :
Languages : en
Pages : 26
Book Description
Dropwise Condensation of Steam at Atmospheric and Above Atmospheric Pressures
Author: J. T. O'BaraPublisher:
ISBN:
Category :
Languages : en
Pages : 27
Book Description
In the first phase of this work equivalent heat transfer coefficients at atmospheric pressure for the dropwise condensation of steam were determined experimentally. The coefficients rangef from 1,140 to 37,200 BTU/hr sq ft deg F for heat fluxes of 167,000 down to 29,900 BTU/hr sq ft deg F with surface temperature differences carying from 2 to 45F. Vapor velocities varied from 1.75 to 7.52 ft/sec. It was observed that the vapor velocity across the condensing surface has a significant effect on the equivalent transfer coefficient with the coefficient exhibiting a maximum with increasing vapor velocity. It is believed that this maximum reflects the transition between dropwise and mixed condensation resulting from the greater vapor-liquid interfacial shear stress developed at high vapor velocities. Visual observations showed that, as the pressure increases, a transition from dropwise to mixed condensation occurs between 25 and 50 psig. This transition is posited to be associated with the decreased surface tension of the condensed phase at the higher saturation temperatures. (Author).
Transport Phenomena in Heat and Mass Transfer
Author: J.A. ReizesPublisher: Elsevier
ISBN: 0444599797
Category : Technology & Engineering
Languages : en
Pages : 833
Book Description
Theoretical, numerical and experimental studies of transport phenomena in heat and mass transfer are reported in depth in this volume. Papers are presented which review and discuss the most recent developments in areas such as: Mass transfer; Cooling of electronic components; Phase change processes; Instrumentation techniques; Numerical methods; Heat transfer in rotating machinery; Hypersonic flows; and Industrial applications. Bringing together the experience of specialists in these fields, the volume will be of interest to researchers and practising engineers who wish to enhance their knowledge in these rapidly developing areas.
Theoretical Chemical Engineering Abstracts
Author: Publisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages : 606
Book Description
Journal of Heat Transfer
Author: Energy Research Abstracts
Author: R & D Abstracts
Author: Technology Reports Centre (Great Britain)Publisher:
ISBN:
Category :
Languages : en
Pages : 584
Book Description
Heat Bibliography
Author: EXPERIMENTAL INVESTIGATION AND MODELING OF DROPWISE CONDENSATION ON A HORIZONTAL GOLD COATED TUBE.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The phenomenon dropwise condensation on a horizontal gold coated tube is investigated by both analytical and experimental methods in this study. A computer program is prepared to calculate the dropwise condensation heat transfer rate on the horizontal gold coated tube. An experimental setup was also manufactured to measure the dropwise condensation heat transfer rate. The effects of flow rate, temperature of cooling water and also steam to wall temperature difference have been analytically investigated by using Mathcad computer program. Experiments were carried out at different inlet temperatures of cooling water. Effects of cooling water at different flow rates are also experimentally investigated. Results of the experiments are compared to those of the literature and the analytical results.