Heat transfer

This work aims to provide a detailed analysis of the heat transfer in direct contact membrane distillation (DCMD). The influence of mass transfer on heat transfer flux was identified in the feed thermal boundary layer, across the membrane and through the permeate thermal boundary layer. A mathematic

The characteristics of wind flow past simplified models of one-side pitched roof buildings were examined in a wind tunnel that was designed and built at the Housing and Building Research Center (HBRC). The wind tunnel consists of a square cross section of 200 mm × 200 mm (a bellmouth intake, main en

A new multi-effect plate evaporator, EasyMED, is presented. This patented process [1] is applicable for seawater desalination using simple and modular technology. Experimental results from the hydrodynamics and thermal performances obtained with a one-effect laboratory unit with 0.4 m3/d distilled w

The effects of liquid load, tube diameter, evaporation boiling point, condensation temperature difference and steam flow velocity on the heat-transfer film coefficients inside horizontal tubes were studied. The experiments were conducted with various operation parameters. In fact, if there is little

Nowadays, according to new environmental regulations, a reduction of waste volume is required. Because of this limitation, only two ways of elimination will be considered: incineration and land application. In this context, a global energetic study of a wastewater and sewage sludge treatment pilot s

The process of thermal seawater desalination depends on the heat transfer efficiency and mechanisms of scale formation on the heating surface. These processes are characterized by considerable complications and physical appropriateness describing them as not subject to get for other working mediums.

A test rig was designed and fabricated in this project to study the heat transfer of falling film flow on a doubly fluted plate. Parametric studies were performed to test the thermal performance based on the measured data. The effects of the temperature difference and feed water flow rate were studi

Solar thermal systems that produce potable water from salty water have been studied for quite some years, and the use of solar energy to produce potable water was known in ancient Egypt. Various solar thermal systems have been presented in the literature. The most studied model, the still type solar

Fouling of the multistage flash (MSF) system condenser tubes used for water desalination reduces the system overall heat transfer coefficient very rapidly. Consequently, hearts the system efficiency and increases the cost of distillate water. In this study, a comparison between enhanced and plain tu