Addendum 62n. Single-zone and dedicated outdoor air systems

That addendum 62n modifies the ANSI/ASHRAE Standard 62 "Ventilation for Acceptable Indoor Air Quality, it contains an update to the minimum prescribed ventilation rates and includes ventilation airflow "additivity" for dilution of people-source and building source contaminants.

Ventilation procedures for better indoor air quality

To give some rules to the construction industry, a new standard on the ventilation was issued in Portugal (NP 1037-1:2002). This standard deals with natural ventilation. Some researchs are being carried out to assess impact of the natural ventilation on indoor environment.

THADE Project: guidelines and standards on indoor air quality in dwellings

This paper is the presentation of the authors'work in the THADE project. Their objective has been to review legislation and guidelines on air pollution and air quality in European dwellings and outside Europe too.

Critical appraisal of the setting and implementation of indoor exposure limits in the EU (INDEX) A project funded by the European Commission-DG SANCO

The aim of this 24 months' project is to create a European network in the area of indoor air pollution with the listing of priority substances to be regulated indoors, recommendations, legislation... at world scale.

Standard 62.2 approved-ASHRAE publishing residential IAQ standard

Standard 62.2. is the first and only recognized Indoor Air Quality standard for residential buildings in United States. It provides a variety of ways to improve at minimal cost the indoor air quality. This standard became official on October 2003. It may be applied to both new and existing houses.

A better way to predict comfort

Standard 55-2004, on thermal Environmental Conditions for Human Occupancy was recently published and approved by ASHRAE and ANSI. This article gives an overview of the key features and limits of applicability of that standard.

Comparison of two IAQ calculation methods

Calculating the contamination concentrations in a space or the required ventilation for a spacehas been a difficult and confusing part in the application of the IAQ Procedure ofANSI/ASHRAE Standard 62, Ventilation for Acceptable Indoor Air Quality. Appendix D ofASHRAE Standard 62 currently presents one method for performing these calculations, but itis limited to the steady-state analysis of a single zone.

Comparison of occupancy detection algorithms, methods of signals filtration and types of requirements expression for CO2-based DCV systems

The paper presents part of the outcomes from the project set up by the Polish Committee forScientific Research and devoted to development of the recommended control strategies forDemand Controlled Ventilation (DCV) systems in Poland. The performance of both differentCO2-based occupancy detection algorithms for online demand controlled ventilation systemsand different methods of digital filtration of signals have been studied.

Air quality in Polish schools - pupils’ self-estimation

The system of education in Poland is affected by rapid and deep political, organizational,demographic and financial changes. Although requirements for indoor air quality aredescribed in detail in Polish building codes and standards, the real state of indoor environmentin classrooms is not well documented. However, published studies show that in schools withconventional stack ventilation indoor air quality is rather poor. Unintentionally, very oftenproblems are related to modernized buildings where energy conservation measures have beenapplied.

Wie viel und wie wird in der Zukunft gelüftet ? Combien et comment ventilera-t-on demain ? How much and how shall we ventilate in the future ?

The article compares the definitions and requirements in various standards (ASHRAE 62, DIN 1946, CEN CR 1752, CIBSE guide A, ISO TC 205) related to ventilation and indoor air quality in terms of health, comfort and productivity. It explains how standards, especially CEN CR 1752, define indoor air pollution (use of olf and decipol as well as carbon dioxyde and water vapour concentrations) and outdoor air pollution .