Experimental Investigation of Mixed Convection in Large Enclosure with Vertical Cooling Plate
Author : Fenglei Niu
Publisher :
Page : 270 pages
File Size : 25,1 MB
Release : 2003
Category : Heat
ISBN :
Author : Fenglei Niu
Publisher :
Page : 270 pages
File Size : 25,1 MB
Release : 2003
Category : Heat
ISBN :
Author : R. Winstanley
Publisher :
Page : pages
File Size : 22,39 MB
Release : 1989
Category : Fluid mechanics
ISBN :
Author :
Publisher :
Page : 400 pages
File Size : 17,52 MB
Release : 1948
Category : Mechanics, Applied
ISBN :
Author : Gregory P. Nurnberg
Publisher :
Page : 464 pages
File Size : 40,27 MB
Release : 1994
Category : Fluid dynamics
ISBN :
Author :
Publisher :
Page : 1134 pages
File Size : 20,14 MB
Release : 1989
Category : Aeronautics
ISBN :
Author :
Publisher :
Page : 806 pages
File Size : 14,29 MB
Release : 2004
Category : Dissertations, Academic
ISBN :
Author :
Publisher :
Page : 692 pages
File Size : 45,57 MB
Release : 1988
Category : Heat
ISBN :
Author : Mehdi Ashjaee
Publisher :
Page : 402 pages
File Size : 39,74 MB
Release : 1986
Category :
ISBN :
Author : Jeffrey David Spitler
Publisher :
Page : 514 pages
File Size : 15,30 MB
Release : 1990
Category :
ISBN :
The prediction of convective heat transfer in enclosures under high ventilative flow rates is primarily of interest for building design and simulation purposes. Current models are based on experiments performed forty years ago with flat plates under natural convection conditions. In order to investigate convective heat transfer in buildings, a full-scale experimental facility was developed with several unique features: fifty-three individually controllable heated panels which allow the room surfaces to be near isothermal, thus minimizing radiation; capability of using two different inlets; a ventilation system capable of providing temperature-controlled air at flow rates between two and one hundred air changes per hour; an air speed and temperature measurement system; and a flow visualization system. A large number of experiments were performed with varying inlet locations and sizes, inlet temperatures, and flow rates. The room outlet temperature was identified as the most suitable reference temperature for the calculation of film coefficients. Film coefficients were successfully correlated to the jet momentum number, J. The correlations form the basis for a new convective heat transfer model that was implemented into the Building Loads Analysis and System Thermodynamics program. The new model was exercised and shown to yield much more accurate results than the current, natural convection based model.
Author : Mohsen Sheikholeslami Kandelousi
Publisher : BoD – Books on Demand
Page : 246 pages
File Size : 15,32 MB
Release : 2020-08-19
Category : Science
ISBN : 1789238374
Studies of fluid flow and heat transfer in a porous medium have been the subject of continuous interest for the past several decades because of the wide range of applications, such as geothermal systems, drying technologies, production of thermal isolators, control of pollutant spread in groundwater, insulation of buildings, solar power collectors, design of nuclear reactors, and compact heat exchangers, etc. There are several models for simulating porous media such as the Darcy model, Non-Darcy model, and non-equilibrium model. In porous media applications, such as the environmental impact of buried nuclear heat-generating waste, chemical reactors, thermal energy transport/storage systems, the cooling of electronic devices, etc., a temperature discrepancy between the solid matrix and the saturating fluid has been observed and recognized.