standard

The french standard NF S 90-351 has been modified to include a wider field of application. This standard now takes into account previsional aspects. It is needed to define "areas at risk", and materials and equipment performances.

The working group WG4 of ISO TC 205 aims to define Indoor Air Quality criteria. The draftstandard contains several methods for determining ventilation rates, based on these criteria.The ventilation rates obtained with some of these methods are compared for several premises:ASHRAE 62-1999, the method of perceived IAQ of CR 1752, and the prescriptive method ofAS 1668.2. To improve the comparison, ventilation rates are also calculated with the prEN13779 method.The studied buildings contains offices, classrooms and a play area.

Energy Performance (EP) standardisation and regulation is by a growing number of countriesconsidered as an attractive approach for achieving a more energy efficient built environment.Several countries have already enacted such EP based regulation (the Netherlands, France,Germany, ASHRAE approach in North America), or are preparing one (Greece, theFlemish Region).The European Council and Parliament are drafting a directive on the Energy Performance ofbuildings, imposing the institution of such regulation in every member state.This paper will give a general introduction to the issue of energy

In June 2001 ASHRAE's Standard Project Committee on "Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings", SPC 62.2P, recommended and the Board of Directors approved ASHRAE's second complete standard on residential ventilation for public review; this was followed by public reviews of independent substantive changes in 2002 . The standard is an attempt by the Society to address concerns over indoor air quality in dwellings and to set minimum requirements that would allow for indoor air quality and energy efficiency measures to be evaluated.

The aim of this workshop organised by BBRI was to identify recent developments in ventilation systems/strategies and to analyse how such innovative systems are at present treated in regulations and how they could be better treated in the future.

This article presents the new requirements of the ANSI/ASHRAE standard 62-2001, Ventilation for Acceptable Indoor Air Quality, including recent changes of the standard available at the Ashrae web site. It explains the status of the 31 addenda to the 1999 version of the standard, some of them being included in the 2001 version, others being still in discussion or in the process to be adopted.

This paper presents a complete overview of energy and indoor air quality issues related to ventilation. It comments ventilation in standards and in practice and gives information on the human response, health effects, air distribution, ventilation efficiency and different types of ventilation systems.

The paper describes a measurement system developed by Dantec to evaluate room thermal comfort according to ISO 7730 standard (determination of PMV and PPD indices).

Indoor environmental measurements (temperature, CO2, formaldehyde, TVOC) were operated in 28 classrooms in Warsaw (Poland). The classrooms were equipped with natural ventilation systems. Air change rates were calculated from CO2 concentrations. Results are compared with Polish regulation and international requirements and standards. The natural ventilation systems applied in all schools do not ensure proper ventilation rate.

Describes what could be the requirements of a European standard (not yet numbered) prepared by Technical Committee 156 (Working Group 7) of CEN (European Standardization Committee) about the calculation of energy requirements for buildings with room conditioning systems.