Investigationofventilationmeasurement methodwas carried out in a full-scale test house. The aim of this study was to examine the ventilation rate via human expiration. The adopted method is able to measure multi-zone airflow rates. Airflow rate between rooms was monitoredand the outdoor airflow rate was measured by using the constant concentration tracer gases. The rate of outdoor airflow entering the house and the airflow rate between the rooms were estimated by the ventilation measurement method via human expiration based on system identification theory.

Illuminance and daylight availability are important parametersin daylighting design for passive, low energy architecture. In Malaysia, the only climatic parameter that can be used for determining daylight availability is global solar irradiation, which is measured at major meteorologicalstations around the country. However, it is possible to estimate the global illuminance from global solar irradiation data if the global luminous efficacy is known.

“Energy Towers” is the name of a technology which was developed at the Technion--Israel Institute of Technology, to produce electricity in arid lands, taking its predicament - a lot of hot dry air - and turning it into an asset. “EnergyTowers” is an econo

In high performance office new buildings and renovations nowadays it is common practice to use multiple façade technology. Double-skin facades are new possibilities for principal and architects seeking creative innovative design that are intelligently adapted to environmental conditions. The new possibilities make it difficult to make choices in the beginning of the design process. Methods to help the designers to make the right decisions are wanted. A method will be presented to support the evaluation within the design process of different facade concepts.

Commercial buildings with large exposed glazed façades require solar shading devices in order to protect occupants from uncomfortable direct glare. Automated window blinds can be used to reduce direct glare, while regulating the transmittance of daylight

This paper describes an experimental study of the thermalenvironment in a highly-glazed perimeter zone of an office building under varying climatic conditions, as well as in a controlled test chamber at the Hydro-Quebecresearch facilities in Shawinigan (LTE). Glazing and shading temperatures were measured at several points and the thermal environment was measured using an indoorclimate analyzer and a thermal comfort meter.

Despite the available knowledge about technologies for passive cooling, cooling energy consumption is still increasing in Europe. The international project KeepCooladdressed this gap, searching for intelligent ways to promote the market penetration of passive cooling solutions.

In order to show the efficiency of Phase Change Materials(PCM) in building walls we have used the software CODYMUR. The aim of the simulation is to evaluate the optimal thickness of the material and its behavior for different speeds of temperature evolutions in the room. The conclusion deals with the behavior of the wall due to the phase change phenomenon with a non linear thermophysical properties in comparison with a pure sensible storage layer.

High reflective coatings and paintings for the building envelope can be very useful to reduce the cooling loads and ensure thermal comfort conditions in the built environment.A sustainable painting obtained with a specialmixture of milk and vinegar is able to reach very high solar reflectance for light colours and especially for the bright white was tested during summer 2006 and used for roofs and walls for several purposes. The solar reflectance of this materials and of usual construction materials was measured with a spectrophotometer.

As both CFD and building simulation have their own limitationsin the thermal prediction of natural ventilation. Externalcoupled simulation method between CFD (FLUENT) and building simulation (ESP-r) hasbeen put forward for thermalenvironment prediction for naturally ventilated building design. Thecoupling mechanism and coupling program interfaceare introduced in the paper. Full CFD simulation and on site field measurements are done for the validation of the coupled simulationmethod.