English

In this paper, the vertical and horizontal spreading rates of CJV (confluent jet ventilation) over the floor are investigated using CFD (Computational Fluid Dynamics) simulations. They are compared with the spreading rates of the wall displacement ventilation (DV) system. The authors conclude that the wall confluent jet is able to cool a room with a heat load, a displacement system is not able to cope with.

In this paper a new method for ventilation measurement using an OP-FTIR (Open Path Fourier Tansform Infrared Spectroscopy) is proposed. A feasibility study was carried out and compared with the traditional measurement method using a Photoacoustic Gas Monitor. It appears that the new measuring method is feasible for practice.

The aim of this research was to acquire a method to select the optimal gas range hood through the performance test under KS (Korean standards) or pr EN (european) codes. Performance curve, noise level, capture efficiency and power consumption are analyzed.
General hoods and functional hoods are compared too.

This paper gives a summary of a detailed CFD (Computational Fluid Dynamics) of the flow around a a Computer Simulated Person (CSP) for the purpose of its validation.

For that field study, measurements of different aspects of an UFAD (UnderFloor Air Distribution) system performance were made in an office building. The results show evidence of the benefits provided by UFAD on indoor air quality.

General information about legionella and legionellosis are first given. Authors then mention techniques and methods of prevention to avoid the increase and spread of legionella in air conditioning and ventilation systems.They include preventive measures such as correct design of the system allowing regular inspection, maintenance and cleaning, as well as methods of anti-bacterial control in ventilation systems.

This paper presents a summary based on 3 articles published in 2005 by the authors about the quantitative influence of indoor climate on productivity.Illness or sick leave prevalence vs. ventilation rate is shown from a model taking into account particles in indoor air. Results are compared with those of other bibliographical sources.Results also concern workers performance as a function of ventilation rate, perceived air quality or indoor temperature.Other date are mentioned about the relationship between sick building syndrome symptoms on occupants performance.

A numerical simulation and experimental measures were made on a prototype specially built for that study of a new system of air distribution inside an hospital railway coach.For the air injection into the carriage, high-induction terminal, in particular micro-jets terminal has been employed. Simulations are in adequacy with values obtained with the experimental measures on the prototype.

For that study, a mathematical analysis is applied graphically and quantitatively to investigate the multiple steady state behavior of combined buoyancy and wind driven natural ventilation system.The necessary conditions for that multiple steady states to exist are investigated along with the impact of initial conditions on the final state of the system.

This paper focuses on the methods for an efficient use of upper openings in large space buildings in Shanghai International Gymnastics Stadium. A huge improvement of the energy saving is due to the use of natural ventilation.The results of the approach may instruct the design of the thermal environment and the effective operation of air-conditioning systems in large space buildings.