The current environmental data and mainly the concern on the exhaustion of not renewable sources of energy dictate the need that the human activities should take place in the frame of sustainable development. Today, it can be achieved in the building sector and in general in the structured environment, via methods such as the one of high environmental quality (dmarche Haute Qualit Environnementale) and the one of Ev (Environmental Value).

In this study, a thermal-network model is employed for the determination of the characteristic thermal inertia factors and more specifically the decrement factor f and the time lag ?. These parameters are very important, especially during the warm period of summer (when passive cooling is essential), when a periodic thermal wave propagates through a walls cross sectional area, from its outer to its inner surface.

London’s urban heat island increases the mean air temperature which affects the demand for heating and cooling buildings. The simultaneous hourly air temperature in London has been measured continuously for a year. These data have shown that central areas

This paper is focused on passive cooling techniques and especially on natural and hybrid ventilation as part of energy rehabilitation measures during an office renovation project. Natural, hybrid and mechanical ventilation was designed to decrease cooling demands and to obtain acceptable indoor air quality for the various needs. In some cases mixing of indoor and outdoor air was implemented. Air-draft problems were solved rearranging the type and the use of windows and using proper the air-grids.

The objective of this work was to experimentally investigate the influence of vent type and of insect proof screens on ventilation rate of a round arch plastic covered greenhouse. The greenhouse was equipped with side roll-up windows and a flap roof window and is located at the University of Thessaly near Volos in the coastal area of Eastern Greece. Microclimate variables as well as the greenhouse ventilation rate (G) were measured.

This paper presents an energy status study of a modern office building in the region of Xanthi. The results of the study are analyzed and evaluated with the use of appropriate software. Finally solutions are proposed for building’s energy rehabilitation.

This paper describes a component of ongoing research that deals with planning and design strategies relevant to sustainable and low energy development. In this paper the particular status of the city of Seoul in Korea is investigated and analysed. The situation that applies in the city is a combination arising from national policies, city level interpretation and local level action. Seoul is compared to several other cities and the actions being taken.

Regular escalation of the state electricity price gives an impact to the increase of operational cost of any high-rise building in Indonesia. To be a rental office, the twin 31-floor buildings of Jakarta Stock Exchange (JSX) or Bursa Effect Jakarta (BEJ - in Indonesian terms) had no exception. The twin buildings were suffered from the impact of the state electricity price escalation. To reduce the bill, the building manager had to reduce the buildings energy consumption, and to consider tenants necessities for indoor comfort at the same time.

This paper presents internal pressure coefficients and discharge coefficients in a building with wind-driven cross-ventilation caused by sliding window openings on two adjacent walls. The study found that both coefficients vary considerably with the opening area and the inlet to outlet ratio.

Existing advanced and sophisticated building systems combined with emerging IT technologies create the opportunities for e-based energy management. Driven mostly by the deregulation of energy market, e-based energy management systems have the potential to help both energy utilities to manage power load and reduce peak loads and end-users to reduce their consumption and possibly increase their comfort.