Air Infiltration and Ventilation Centre

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Air Infiltration and Ventilation Centre
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AIVC
Formation1979 (1979)
PurposeProvide information on energy efficient ventilation of buildings
Membership
Australia, Belgium, China, Denmark, France, Greece, Ireland, Italy, Japan, Netherlands, New Zealand, Norway, Republic of Korea, Spain, Sweden, UK and USA
Official language
English

Air Infiltration and Ventilation Centre (AIVC) is the International Energy Agency information centre on energy efficient ventilation of buildings. [1] [2]

Contents

History

The AIVC started in 1979 [3] in the context of the first and second oil crisis in 1973 and 1979. The Centre was established as the 5th research project (Annex 5) in the context of the implementing agreement Energy in Buildings and Communities Programme (at that time called ECBCS) of the International Energy Agency. [4] [5] Since its inauguration, in 1979, the AIVC has been running without interruption. [6] In November, 2020 the executive committee of the International Energy Agency Technical Collaboration Programme Buildings and Communities, approved a 5-year extension period for the AIVC from 2022 till 2026. [7] In the first years, the AIVC's primary focus was understanding and finding ways to limit the energy impact of air infiltration in buildings. [8] [9] [10] This was reflected in its original name “Air Infiltration Centre”. Ventilation was introduced in the name in 1986 because of the strong interactions between ventilation and infiltration in buildings and increasing interest in indoor air quality concerns. [9] [10] The Centre has developed an expertise in ventilation and infiltration with a series of technical notes and guides [10]

In parallel, the scientific and professional community in this area has grown significantly as well as the amount of research and development. Therefore, since 2011, to encourage exchanges and collaboration between the various stakeholders in the field, AIVC has shifted its focus to networking activities including the use of advanced and innovative dissemination strategies. [11] The Centre is operated by the International Network for Information on Ventilation and Energy Performance, which is a registered European Economic Interest Grouping whose members include building research centres in Europe.

Today, AIVC serves as a source of information for scientists and professionals interested in building ventilation and infiltration issues. The Centre holds annual conferences and workshops, [12] publishes papers and reports, and maintains a large database of publications.

The AIVC also collaborates with the TightVent Europe and venticool platforms; both platforms are market oriented, created in 2011 and 2012 and focusing on building and ductwork airtightness and ventilative cooling strategies in buildings, respectively. In addition, the AIVC has collaborative activities with organizations such as the International Society of Indoor Air Quality and Climate, the Federation of European Heating, Ventilation and Air-conditioning Associations, the International Building Performance Simulation Association, the American Society of Heating, Refrigerating and Air Conditioning Engineers as well as the Indoor Environmental Quality Global Alliance.

AIVC countries

The following countries participate in the AIVC: Australia, Belgium, China, Denmark, France, Greece, Ireland, Italy, Japan, Netherlands, New Zealand, Norway, Republic of Korea, Spain, Sweden, UK and USA. [13] [14]

AIRBASE

AIRBASE is the Bibliographic Database of the AIVC. It contains abstracts of articles and publications related to energy efficient ventilation of buildings. Where possible, sufficient detail is supplied in the bibliographic details for users to trace and order the material via their own libraries. Topics covered by AIRBASE include ventilation strategies, design and retrofit methods, calculation techniques, standards and regulations, measurement methods, and indoor air quality and energy implications.

Entries are based on articles and reports published in journals, internal publications and research reports, produced both by university departments and by building research institutions throughout the world. AIRBASE also includes the AIVC publications and the presentations and proceedings of the AIVC conferences and workshops.

AIRBASE has grown and evolved since the AIVC was established from 1979 to present day, with over 22700 references and more than 16200 documents available online.

Publications

Since its creation in 1979 the AIVC has produced a series of publications grouped in themes.

Ventilation information papers are a series of short publications (6 to 8 pages) intended to give a basic knowledge on some aspects related to the air infiltration and/or the ventilation).

The AIVC's collection of technical reports offers detailed information on subjects including ventilation, infiltration, indoor air movement, and measurement techniques.

Guides and handbooks are a series of carefully researched and readily accessible publications gives detailed coverage on a range of important topics, and encapsulating the knowledge and experience derived from experts in all the AIVC Member Countries.

Annotated bibliographies is a series of bibliographies aimed at researchers, designers and engineers etc. who are seeking an overview of developments on subjects including ventilation, air infiltration and related fields. The references quoted in these documents are taken from the AIVC's bibliographic database (AIRBASE).

Contributed reports are reports produced by third parties but considered of relevance for the AIVC target audience and therefore also published under an AIVC cover.

The Air Information Review was a quarterly newsletter containing topical and informative articles on air infiltration and ventilation research and application. It was published from 1979 to 2010. Since 2011, the AIVC publishes twice a year a four-page newsletter with the aim to provide information on the progress of the various projects as well as to learn about initiatives (publications, events, etc.) of interest.

Annual AIVC conferences

The AIVC holds a conference each year in September/October in one of the AIVC participating countries, with around 50 to 150 presentations on a variety of topics in the air infiltration and ventilation fields. Since 1980, these annual conferences have been an international meeting point for presenting and discussing major developments and results regarding infiltration and ventilation in buildings. The proceedings of each conference are made available by the time of the next year's conference.

AIVC workshops

The AIVC also organizes workshops, covering a wide range of topics in the field of infiltration and ventilation in buildings.

Related Research Articles

International Energy Agency Autonomous intergovernmental organisation

The International Energy Agency is a Paris-based autonomous intergovernmental organisation established in the framework of the Organisation for Economic Co-operation and Development (OECD) in 1974 in the wake of the 1973 oil crisis. The IEA was initially dedicated to responding to physical disruptions in the supply of oil, as well as serving as an information source on statistics about the international oil market and other energy sectors. It is best known for the publication of its annual World Energy Outlook.

Ventilation (architecture) Intentional introduction of outside air into a space

Ventilation is the intentional introduction of outdoor air into a space. Ventilation is mainly used to control indoor air quality by diluting and displacing indoor pollutants; it can also be used to control indoor temperature, humidity, and air motion to benefit thermal comfort, satisfaction with other aspects of indoor environment, or other objectives.

Building science

Building science is the collection of scientific knowledge that focuses on the analysis of the physical phenomena affecting buildings. Building physics, architectural science and applied physics are terms used for the knowledge domain that overlaps with building science.

Seasonal thermal energy storage (STES), also known as inter-seasonal thermal energy storage, is the storage of heat or cold for periods of up to several months. The thermal energy can be collected whenever it is available and be used whenever needed, such as in the opposing season. For example, heat from solar collectors or waste heat from air conditioning equipment can be gathered in hot months for space heating use when needed, including during winter months. Waste heat from industrial process can similarly be stored and be used much later or the natural cold of winter air can be stored for summertime air conditioning.

Passive ventilation

Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems. It refers to the flow of external air to an indoor space as a result of pressure differences arising from natural forces.

Infiltration is the unintentional or accidental introduction of outside air into a building, typically through cracks in the building envelope and through use of doors for passage. Infiltration is sometimes called air leakage. The leakage of room air out of a building, intentionally or not, is called exfiltration. Infiltration is caused by wind, negative pressurization of the building, and by air buoyancy forces known commonly as the stack effect.

Building services engineering is a professional engineering discipline that strives to achieve a safe and comfortable indoor environment whilst minimizing the environmental impact of a building.

IEA Solar Heating and Cooling Programme

The International Energy Agency Solar Heating and Cooling Technology Collaboration Programme is one of over 40 multilateral Technology Collaboration Programmes of the International Energy Agency. It was one of the first of such programmes, founded in 1977. Its current mission is to "advance international collaborative efforts for solar energy to reach the goal set in the vision of contributing 50% of the low temperature heating and cooling demand by 2030.". Its international solar collector statistics Solar Heat Worldwide serve as a reference document for governments, financial institutions, consulting firms and non-profit organizations.

Building airtightness can be defined as the resistance to inward or outward air leakage through unintentional leakage points or areas in the building envelope. This air leakage is driven by differential pressures across the building envelope due to the combined effects of stack, external wind and mechanical ventilation systems.

ASHRAE American HVAC professional association

The American Society of Heating, Refrigerating and Air-Conditioning Engineers is an American professional association seeking to advance heating, ventilation, air conditioning and refrigeration (HVAC&R) systems design and construction. ASHRAE has more than 57,000 members in more than 132 countries worldwide. Its members are composed of building services engineers, architects, mechanical contractors, building owners, equipment manufacturers' employees, and others concerned with the design and construction of HVAC&R systems in buildings. The society funds research projects, offers continuing education programs, and develops and publishes technical standards to improve building services engineering, energy efficiency, indoor air quality, and sustainable development.

TightVent Europe

TightVent Europe is a platform, formed in 2011, with a focus on building and ductwork airtightness issues. The creation of the platform was triggered by the need for a strong and concerted initiative to meet the Directive on the energy performance of buildings ambitious targets for the year 2020 and overcome the challenges in relation to the envelope and ductwork leakage towards the generalization of nearly zero-energy buildings. The platform’s main activities, among others, include the production and dissemination of policy oriented publications, networking among local or national airtightness associations, as well as the organization of conferences, workshops and webinars.

International Building Performance Simulation Association

The International Building Performance Simulation Association (IBPSA), is a non-profit international society of building performance simulation researchers, developers and practitioners, dedicated to improving the built environment. IBPSA aims to provide a forum for researchers, developers and practitioners to review building model developments, encourage the use of software programs, address standardization, accelerate integration and technology transfer, via exchange of knowledge and organization of (inter)national conferences.

Venticool

Venticool is an international platform formed in 2012 focusing on ventilative cooling issues, with the overall goal to "boost awareness, communication, networking and steering research and development efforts in the field" . In 2020, venticool's focus was broadened towards resilient ventilative cooling.

Ductwork airtightness can be defined as the resistance to inward or outward air leakage through the ductwork envelope. This air leakage is driven by differential pressures across the ductwork envelope due to the combined effects of stack and fan operation.

In December 2013, the International Energy Agency (IEA) Energy in Buildings and Communities Programme Executive Committee decided to launch the three-year working phase of the Annex 66 on Definition and Simulation of Occupant Behavior in Buildings::. Annex 66 was officially closed on June 21, 2018.

Indoor Environmental Quality Global Alliance

The Indoor Environmental Quality Global Alliance (IEQ-GA) was initiated in 2014 aiming to improve the actual, delivered indoor environmental quality in buildings through coordination, education, outreach and advocacy. The alliance works to supply information, guidelines and knowledge on the indoor environmental quality (IEQ) in buildings and workplaces, and to provide occupants in buildings and workplaces with an acceptable indoor environmental quality and help promote implementation in practice of knowledge from research on the field.

International Energy Agency Energy in Buildings and Communities Programme

The International Energy Agency Energy in Buildings and Communities Programme, formerly known as the Energy in Buildings and Community Systems Programme (ECBCS), is one of the International Energy Agency’s Technology Collaboration Programmes (TCPs). The Programme "carries out research and development activities toward near-zero energy and carbon emissions in the built environment".

Ventilative cooling

Ventilative cooling is the use of natural or mechanical ventilation to cool indoor spaces. The use of outside air reduces the cooling load and the energy consumption of these systems, while maintaining high quality indoor conditions; passive ventilative cooling may eliminate energy consumption. Ventilative cooling strategies are applied in a wide range of buildings and may even be critical to realize renovated or new high efficient buildings and zero-energy buildings (ZEBs). Ventilation is present in buildings mainly for air quality reasons. It can be used additionally to remove both excess heat gains, as well as increase the velocity of the air and thereby widen the thermal comfort range. Ventilative cooling is assessed by long-term evaluation indices. Ventilative cooling is dependent on the availability of appropriate external conditions and on the thermal physical characteristics of the building.

Fariborz Haghighat

Fariborz Haghighat is an Iranian-Canadian academic, engineer and Distinguished Professor of Building, Civil & Environmental Engineering at Concordia University. Haghighat has a Concordia University Research Chair in Energy and Environment and he was Inducted into the Provost's Circle of Distinction in 2009.

Occupant-centric building controls or Occupant-centric controls (OCC) is a control strategy for the indoor environment, that specifically focuses on meeting the current needs of building occupants while decreasing building energy consumption. OCC can be used to control lighting and appliances, but is most commonly used to control heating, ventilation, and air conditioning (HVAC). OCC use real-time data collected on indoor environmental conditions, occupant presence and occupant preferences as inputs to energy system control strategies. By responding to real-time inputs, OCC is able to flexibly provide the proper level of energy services, such as heating and cooling, when and where it is needed by occupants. Ensuring that building energy services are provided in the right quantity is intended to improve occupant comfort while providing these services only at the right time and in the right location is intended to reduce overall energy use.

References

  1. BUILD UP energy solutions for better buildings, "AIVC: Air Infiltration and Ventilation Centre", 2009
  2. M.W. Liddament, “A Guide to Energy Efficient Ventilation”, AIVC, Guide GV, 1996
  3. IEA, "EBC Annex 05 Air Infiltration and Ventilation Centre", 2018, Retrieved August 2014
  4. R. Scott, "History of the IEA: The First 20 Years. Volume I: Origins and Structure.", IEA 1994
  5. Western Cooling Efficiency Center (WCEC), "WCEC Director to Present at International Workshop in Washington, DC", 2013
  6. International Energy Agency "EBC Annual Report 2012, Energy in Buildings and Communities Programme", IEA, 2012
  7. Energy in Buildings and Communities Programme: “EBC Annual report 2020”, 2020
  8. AIVC, "Air Information Review, Vol. 25, No.4, September 2004", AIVC 2004
  9. 1 2 P. Wouters, "The new AIVC - your companion in the ventilation world", 22nd AIVC Conference "Market Opportunities for Advanced Ventilation Technology", Bath, UK, 11–14 September 2001
  10. 1 2 3 W. de Gids, "A perspective on the AIVC", 10th AIVC Conference "Progress and trends in air infiltration and ventilation research" Espoo, Finland, 25–28 September 1989
  11. BUILD UP energy solutions for better buildings, "AIVC Newsletter No1", 2011
  12. Building Ecology, "AIVC - Air Infiltration and Ventilation Centre", Retrieved May 2014
  13. BUILD UP energy solutions for better buildings,"AIVC Newsletter No2", 2012
  14. BUILD UP energy solutions for better buildings,"AIVC Newsletter No4", 2013