To realize a desirable building environment by saving energy and low global emission, the author has been investigating passive systems in buildings where the environment is controlled biomimetically and autonomously by simulating the physiological functions of human and other organisms. An environmental harmonized Biomimetic Building, which simulates the environment physiology mechanism of a human body and human wisdom for environment symbiosis, has been developed.

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.

Ventilated façades have become an increasingly employed feature in the design of low energy buildings over recent years in that they offer the attractive features of a conventional glass façade but without the thermal disadvantages. These façades consist

Not long ago the ASHRAE Technical Committee on Load Calculation, TC 4.1, had a “bake off’ of sorts between different peak air-conditioning load calculation schemes and programs. One of the outcomes of this exercise was the realization that practitioners a

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.

The trend to reduce energy losses through enclosures (walls and windows) is an increasingly important part of improving the energy efficiency of a building. Adequate window design and orientation can reduce the heating and cooling requirements of a building.

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.