English

This study describes the results of field measurement to evaluate air-conditioning operating method for large-scale atrium. In Part 1, the passive ventilation operating method using the leakages within the outer walls and the stack effect of the high-rise buildings is recommended for the large-scale grand lobby during the intermediate season.

The development of good solutions for the zone separation problem-smoker/non-smoker“-in the same room is possible, and is proven by realized cases. The optimization of the ventilation design and additional necessary means was based on numerical simulation

Thirteen parts of human body’s perspiration in hot and humid environment in summer in Chongqing, located in southwest China, has been tested in the laboratory. We found that human forehead thorax back armpit and haunch were sensitive to the perspiration a

The aim of the project described in this paper is to investigate the effect of indoor air quality and ventilation rates on pupils’ performance and health using psychological tests on the one hand and to recommend suitable ventilation rates for classrooms

This paper deals with uncertainty in IAQ performance assessment of a naturally ventilated building in case of combined influence of the stochastic behaviour of both weather parameters and occupancy.

A new ventilation control strategy based on the Multiple Spaces Equation is developed in order to take into account the actual number of building occupants. That strategy is evaluated under steady-state and dynamic conditions of the HVAC system.

Studies on air circulation became of great importance in recent years, since are crucial for the energy consumption of buildings, for the pollutant dispersion within cities and for the good comfort conditions for the pedestrians and the habitants. The semi-empirical model developed in this study aims to accurate wind speed computation inside street canyons. In the framework of the Urbvent European Research project, an extended experimental campaign took place in five different urban street canyons in the centre of Athens during the summer of 2001.

The paper presents a study of the indoor climate of a monumental building with periodic high indoor moisture loads. Several scenarios of the past performance and new control classes are simulated and evaluated. The results include the influence of hygric inertia on the indoor climate and (de)humidification quantities of the HVAC system. It is concluded that: (1) The past indoor climate can be classified as ASHRAE control C with expected significant occurrences of dry (RH below 25%) and humid (RH above 80%) conditions; (2) ASHRAE control C is not suitable for the new hall.

High levels of indoor relative humidity are one of the main causes of moisture damage in buildings. That cause can be removed by an appropriate ventilation system. Relative humidity controlled ventilation systems were designed to increase energy performance of buildings without exposing them to moisture damage. The study of the performance of such a system in terms of energy savings and maximum relative humidity is proposed here using numerical simulations with an appropriate whole building heat, air and moisture modelling approach that is developed in the frame of IEA Annex 41.

The design and realisation of natural ventilation systems is an important research topic into the ability of buildings to respond to climatic conditions, using parts of the buildings themselves as indoor microclimate control systems. This research aims to evaluate how the stairwell can be an essential element of natural ventilation in low-rise buildings. In this study, the main innovation is the different architectural and functional conception of traditional building components such as the stairwell.