English

Two models, the Eggenberger- Polya and the William's logarithmic series have been used to predict the probability of occurrence of varying length mild and hot spells, respectively, for the summer period using a 13-yr hourly database from Athens. Greece. The proposed models provide the necessary information to energy analysis and climatologists contributing towards a more precise analysis of the summer comfort conditions.

Termodeck's passive cooling system of indoor climate control uses hollowed-out concrete slabs through which room air is circulated. During the summer, the fan runs at night, too, passing cool air over the slabs to ensure the temperature remains cool for the day ahead. Andy Cook reports.

The aim of this research was to investigate the flow pattern around a test room which is used for natural ventilation studies. The test cell effectively represents an in-fill development of a low-rise building located adjacent to high-rise buildings. When considering natural ventilation in a building in such a location it is beneficial to understand the local wind flow patterns resulting from the impact of the surrounding buildings on the prevailing wind conditions.

A technically and socially innovative housing project at Hockerton in Nottinghamshire has set out to implement the Agenda 21 principles on a local scale. With a radical approach, impeccable design credentials and committed occupant-owners, the scheme is a striking way forward. It might work for them, but will it work for the rest of us?

This paper summarizes the results of an horizontal study on Passive and Hybrid Cooling for buildings, carried out by the authors, on behalf of the EEC Research Program "Building 2000" /1/. The state of the art of the strategies for the prevention of thermal gain is presented. Also the existing situation on the design tools and the computational methods regarding the Passive and Hybrid cooling techniques and components is analysed. Finally the data of several designed and constructed buildings in Europe using Passive and Hybrid cooling techniques and components are given and analysed.

Pressure pans are often misused, and the information they provide can mislead the inexperienced. Bruce Manclark of Delta-T Incorporated (Eugene, Oregon) and Jeffrey Siegel, formerly of Ecotope Incorporated (Seattle, Washington), investigate how mistakes are made, and share their research into one strategy for more accurate pan readings.