This paper deals with an experiment made in a rest room located in the living quarter of a Norwegian oil platform in the North Sea. The project was to get an area for the non-smokers with no odour of cigarette fumes : a non smoker could then sit next to a smoker when placed upstream the airflow.
It was decided to install a variable air volume (VAV) system regulated via a general air quality sensor.The sensor was located adjacent to the exhaust slot nearest to the non-smoking area.
In this paper measurement of local ventilation index and air exchange efficiency is presented. That work shows that with carefully design solutions, health risks for restaurant workers and bartenders can be considerably reduced. High ventilation efficiencies have been obtained thanks to the separation of non-smoking and smoking areas with air-curtains.
The comparison of indoor temperatures measured in different Beijing buildings without air conditioners allowed those conclusions : the indoor temperature is different according to the floor at which a room is located , a high insulation of external walls and roof, along with a proper location of fenestrations and window shading can reduce incidence of solar radiations and improve indoor climates of the room.
For the protection of workers against the excessive radiation heat, local ventilation is used . But the distribution of locally supplied air has to be designed so as not to interfere with the production process. The design of a local air supply ( air shower) is based on operational measurements of thermal conditions realised on the working place of operators.
The analysis of the the operators'heat stress was made by using the WBGT-index (Wet Bulb Globe Temperature index)
The main aim of the Tip-Vent project was to provide a contribution o the creation of improved boundary conditions for the application of mechanical ventilation systems with good levels of performance. The project has led to a better understanding of the true performance of ventilation systems, why they perform as they do and what improvements are achievable. The Tip-Vent source book synthetises the findings of the projects participants.
This report summarizes the work of the initial working phase of IEA Annex 35 "Hybrid Ventilation in New and Retrofitted Office and Educational Buildings". It describes the state-of-the-art of hybrid ventilation technologies, of control strategioes and algorithms and of analysis methods. It provides examples of existing systems and show solutions to specific problems in 22 office and educational buildings locate in different outdoor climates.
In 1998, an international research project entitled "Hybrid Ventilation in New and Retrofitted Office and Educational Buildings" was commenced under the auspices of the International Energy Agency. The fourth forum organized within the framework of this project was held in May 2002 in Montreal, Canada. About 25 papers related to the major outcomes and technologies were presented.
This information dossier describes the general principles of natural ventilation, the calculation of air flows and the strategies for building cooling. It presents case studies of six office buildings, with the lessons learned.
The central subject of this Workshop was the challenge offered by energy performance regulations to find adequate solutions for the integration of innovative technologies in such regulations.
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