English

A multiple film based daylight control system for window has been developed to maintain theilluminance level at task plane. The developed system consists of three films with a visualtransmittivity (Tvis) range of 0.159 - 0.015 and a 2x55W dimmable compact fluorescent lamp(CFL) fixture.

Because we spend most of our time in enclosed spaces, demand in thermal comfort ofbuildings rose increasingly and then energy consumption correspondingly is increased,aggravating the pollution of natural environment. Integrating phase change materials (PCM)into building walls is a potential method of reducing energy consumption in passivelydesigned buildings. A wallboard new PCM material is experimentally investigated in thispaper to enhance the thermal behaviour of light weight building internal partition wall.

In order to get an accurate knowledge of the energy consumption of buildings and ofcomfort parameters inside of closed rooms depending on the time, we developed amathematical model. Based on Fouriers differential equation, this mathematical modelallows us to calculate the instantaneous heat loss, the amount of the heat flow stored inthe wall between the two time values, and the plotting versus time of the temperaturegenerated on the contact surface of a double-layer wall structure.

In the practical applications, roofs of buildings can be in different shapes depending onarchitectural design of building or climate. Some of these building roofs can be classified asgambrel, saltbox and gable roofs. In the present study, we investigated the natural convectionheat transfer and fluid flow inside the gambrel, gable and saltbox roofs for winter boundaryconditions. With this aim, the identified roofs are compared with each other from the heattransfer and flow field point of view.

In this study, a numerical analysis has been performed to examine the natural convection heattransfer and flow field inside a saltbox roof with eave in winter day conditions. This analysisis important for applications since it shows the effective parameters on natural convectionheat transfer. The governing equations of natural convection in streamfunction-vorticity formwere solved using central difference method to obtain flow and temperature fields inside theroof. Also, the Successive Under Relaxation (SUR) technique was used to solve linearalgebraic equations.

Venetian blind can have a major impact on building energy use and occupant's comfort. Butmanual or motorized Venetian blind has limitations in meeting occupants needs and inreducing energy consumption. These limitations can be overcome by the automatic control ofthe Venetian blind. This study aims to analyze the control method of commercially usedautomated Venetian blind and to evaluate the environmental performance of this type of blind.The environmental performance of an automated Venetian blind was evaluated by a real-scaleexperiment and occupants response in summer.

Due to high-rise residential buildings and extension of balcony, to resolve discomfort ofindoor-environment and the problem which energy consumption increases, high-riseresidential buildings, coming natural ventilation and decreasing expense of an airconditioningsystem., enable envelope system to be developed.The object of this study is to present the improvement on envelope of high-rise residentialbuildings to reduce heating and cooling load.

In order to reduce the energy consumptions, it is urgent to be focused on existing buildings.The answer is how to determine priorities of interventions on a building to be renovated. The traditional method consists in carrying out a great number of tests and quantifying profits obtained with each solution or combinations of solutions.

A systematic method for assessing and improving indoor environment quality (IEQ) isdeveloped for existing and occupied office buildings. The method begins with an occupantsatisfaction survey that is directed to everyone working in a building. The structure of thequestions follows a pattern that offers valuable information of the technical reasons leading todissatisfaction.

Both on European and national scale, standards are now being drawn to extend to summer airconditioning the evaluation of energy requirement in building-plant systems. To this aimdifferent simplified methods have been taken into account, anyway all similar to theutilization factor method already used for the winter season.The results obtained by the application of these methods in the case of typical buildings aretherefore compared here with those from a dynamic simulation of building-plant system bymeans of comprehensive computer programs like Energy-Plus.