Chairs
Pertti Pasanen pasanen@uku.fi
University of Kuopio, Finland
Francis Offerman ieesf@aol.com
Indoor Environmental Engineering, USA
Scientific Secretary
Rauno Holopainen rauno.holopainen@hut.fi
Helsinki University of Technology, Finland
Aim and scope
The aim is to gather the state of art information on HVAC hygiene. It will give the international opinion about the demand for the cleanliness level in different type of buildings (offices, schools, homes etc.) and also a suggestion to need for cleaning of the systems. The work will put emphasis on non-industrial HVAC systems. The following topics are included:
1. The possible harmful effects caused by impurities in HVAC systems
2. Evaluation of most important risks of contamination i.e. to find out origin of contamination and the critical phases for contamination in HVAC system history
3. The overview of the existing guidelines and regulations in various countries for cleanliness of HVAC systems or cleaning intervals or special demands for cleaners
4. The techniques used for contamination mitigation measures in new installations and existing buildings
The work is planned to be done in co-operation with the international specialists interested in the topic who have asked or will be asked to write down chapters of their own speciality; email and web pages will be used for communication. Hopefully, the utilisation of the knowledge of the international specialists gives a state of art information on the topic so that the Task Force report would be of great value for the other indoor air specialists. Conversation, based on the written draft, about the different demands of cleanliness, different cleaning methods and also the objectiveness of guidelines in different countries gives the best survey about the most important problems to be solved.
Status
The international discussion of this topic was started in Indoor Air '99 at Edinburgh and later continued at Healthy Buildings '2000 conference in Espoo (see their homepage at www.hb2000.org Workshop WS 18.
The preliminary contents of the report has been planned and evaluated by some specialists. The report includes the following main chapters.
1. Introduction (5%)
2. Contaminants in HVAC system and supply air quality (10%)
3. Sources of contamination in HVAC (30%)
4. Contamination mitigation in new HVAC installation (20%)
5. Evaluation techniques for cleanliness (15%)
6. Guidelines and regulations for cleanliness of HVAC systems in office buildings (15%)
7. Summary (5%)
Currently none of the chapters are ready. Literature review of some areas has been performed, but the those are not focused on the state of the art report yet.
It is hard to provide the date for the completion of final report. The discussions during HB2000 conference showed that opinions are far from each other (e.g., it is difficult to unambiguously define the cleanliness). The preliminary report for the discussions will nevertheless be ready during the year 2002.
Future activities
Preliminary draft of the report will be written and delivered for international discussions before the next Indoor Air Conference 2002.
Others
Active specialists (both in science and in practice) are asked to inform of their contact information to chair persons or secretary.
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