English

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.

The cellular method for optimal shading design recently has been implemented as a plug-in for the Ecotect software (Fig. 1). This is a significant step since it enables designers to optimize shading devices based on predicted indoor hourly thermal requirements for shading and solar gain. These requirements are determined from predicted hourly heating and cooling loads or fluctuating internal comfort levels. The method comprises a unique process of projecting and accumulating this information onto numerous theoretical cells of proposed shading devices or any other outdoor locations.

Requirements on working environment in office buildings according to Czech law express optimal air temperature, globe temperature, humidity and air velocity. In the case of historic library office hall with skylights, located in the centre of Prague the main problem was overheating during summer period. Paper describes problem analysis using CFD tools, measurements and building energy performance modelling tool, design of energy efficient and sustainable measures and evaluation of results.

This paper deals with the development and the evaluation of hybrid ventilation control strategies, using both natural and mechanical mode, in residential buildings. The case study is a single dwelling and it includes a mechanical ventilation system based on the french national regulation and a hybrid ventilation system used in the framework of the European project RESHYVENT. Two demand control strategies have been developed for hybrid ventilation system, the first one is based on the occupant detection and the second one is based on the CO2 levels in the dry rooms.

In this paper, a new approach for energy consumption and peak demand predicting in buildings is shown. The method is based on a mathematical model of load curve and energy curve. This model is obtained after classification of typical curves using a multivariate technique called Cluster analysis. The performance of this predictor was evaluated using real data. The achieved results demonstrate the good precision reached with this system.

CLEAR [1] is a web-based interactive teaching package on low energy architecture and human comfort. It was developed by the Low Energy Architecture Research Unit, LEARN [2], of the London Metropolitan University with the collaboration of European and international academic partners. CLEAR is available on the Internet and may be used freely and without registration by everybody interested in the field. The development of CLEAR is based on the earlier DayMedia [3] and MulCom [4] packages, and is part-funded by the European Commission.

Post-war housing policies had always been one of major drive of improving social welfare and the economic growth of Japan through building industry. I belong to the baby-boomer generation, observing and enjoying the tremendous change and development during the last five decades. For us, one of the most impressive cultural transitions of built environment has been experienced in the housing.

The application of Environmental Design principles can substantially contribute in energy conserving in residential areas. People constitute an imponderable factor for the accomplishment of this target and it is very important to inquire the readiness of people to accept and adopt innovations in their lives in order to achieve energy saving. To investigate the social attitudes, a social research took place in Cyprus. This was attained by answering questionnaires which were applied in four social groups.