ECA 05: Project inventory

Information on the projects is contained on formatted sheets three of which are accommodated on each page. The projects of each country are grouped together. An identification number has been attributed to each project composed of the country code as used for automobiles and a number. Numbers are sequential and start from 1. They are attributed arbitrarily and may differ from one edition of the inventory to the next.

ECA 04: Sick building syndrome - a practical guide

The report aims at giving a guide to those facing the problem of "sick building syndrome". After a description of the other building related illnesses, which must not be confused with the syndrome in object, the extent of the problem is presented, with particular emphasis on the economic implications. The report deals also with the symptoms which must be present in order to diagnose the syndrome and with the various environmental and personal factors possibly contributing to the development of the trouble.

ECA 03: Indoor pollution by NO2 in European countries.

The report summarizes information on indoor pollution by nitrogen dioxide (NO2) In European countries participating in the concerted action "Indoor Air Quality and Its Impact on Man" (COST project 61 3). Major scope of the report IS to give concise information to people involved In research planning, policy making and regulatory activities and to help to identify a European view of the issue. The summary includes a short review of health effects of NO2 and of existing air quality guidelines and standards.

ECA 02: Formaldehyde emission from wood-based materials: guideline for the determination of steady state concentrations in test chambers

This guideline has been prepared by a working group of the concerted action "Indoor Air Quality and Its Impact on Man" (COST project 613) and describes a method for the determination of formaldehyde emissions from wood based materials using large scale, walk-in type environmental chambers. The guideline describes essential features of the chambers to be used, such as size, inner wall and sealing materials, tightness, air circulation and position of sensors for temperature and humidity.

Introduction

Physical and Chemical Exposure Unit Exposure Modelling and Environmental Noise Group

Objectives

The focus of the activity is urban & indoor air pollution exposure assessment, seen as part of human health risk assessment and also considering the needs of urban and indoor air quality management. Specific examples of the working areas of ECA are:

A Study on Ventilation Systems for Removing Indoor House Dust

This study evaluated various ventilation strategies for efficiently removing house dust in the indoor environment. Experiments and simulations were performed to study the flow and diffusion fields that are affected by different locations and shapes of outlets. In this study, two kinds of ventilation strategies were considered i.e. ceiling exhaust and slit exhaust. In each case, experimental measurements showed that the characteristics of airflow within the whole room are generally similar except for airflow close to the outlet. CFD flow field and diffusion field simulations were also made.

Potential of Passive Cooling Techniques for Modern Houses in the Tropical Climate of Malaysia - Analysis of the Indoor Thermal Environment for Various Ventilation Strategies

This paper discusses the potential of passive cooling techniques for Malaysian modern houses with the aim of reducing air-conditioning usage. A full-scale field experiment was carried out to reveal the detailed indoor thermal environment for various ventilation strategies. Night ventilation was found to be better than daytime ventilation, full-day ventilation and no ventilation in terms of air temperature reductions during the day and night. Night ventilation improves thermal comfort more than the other ventilation conditions based on operative temperature.

An Energy Efficient Air Conditioning System using Displacement Ventilation and Chilled Ceiling for Modern Office Buildings

Thermal comfort and indoor air quality (IAQ) play a vital role in creating a pleasant and healthier indoor environment for occupants. The supply air conditions and the concentration of CO2 contaminant present in the supply air can decide the comfort level and purity of air in indoor environments. In this study, an effort was made to investigate the combined effect of a chilled ceiling and displacement ventilation (CC-DV) air conditioning (A/C) system that would possibly achieve good thermal comfort and IAQ in a proposed office building subjected to hot and humid climatic conditions.

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