Abstract
The overall objective of the “Annex 68” Project, which belongs to the International Energy Agency’s “Energy in Buildings and Communities” Implementing Agreement, has been to develop the fundamental basis for optimal design and control strategies for good Indoor Air Quality (IAQ) in highly energy efficient residential buildings, and to disseminate this information in a practically applicable guide. The strategies shall facilitate the possibility to design and operate residential buildings with minimal energy use, while ensuring impeccable indoor climates.The project completes its working phase by the end of spring 2019. The work has gathered laboratory and field data and developed new knowledge on pollution sources in buildings and how the transport mechanisms for the pollutants interact with heat, air and moisture conditions in materials and indoor zones. Furthermore, the project has assembled a set of contemporary models to simulate the combined heat, air, moisture and pollution conditions of buildings and their assemblies. The purpose has been to identify and describe amenable ways to optimize the provision of ventilation and air-conditioning. The paper gives an account of the project highlights.
Highlights
IEA EBC Annex 68 was approved in Nov. 2014 to commence the preparation phase, and the working phase was commenced in Nov. 2015
The work has gathered laboratory and field data and developed new knowledge on pollution sources in buildings and how the transport mechanisms for the pollutants interact with heat, air and moisture conditions in materials and indoor zones
The overall objective is to provide a generic guideline for the design and operational strategy of residential buildings which have minimal energy consumption, and at the same time maintain a very high standard regarding Indoor Air Quality based on the control of sources, sinks and flows of heat, air, moisture, and pollutants under in-use conditions
Summary
IEA EBC Annex 68 was approved in Nov. 2014 to commence the preparation phase, and the working phase was commenced in Nov. 2015. The overall objective is to provide a generic guideline for the design and operational strategy of residential buildings which have minimal energy consumption, and at the same time maintain a very high standard regarding Indoor Air Quality based on the control of sources, sinks and flows of heat, air, moisture, and pollutants under in-use conditions. This is done by gathering the existing scientific knowledge and data on pollution sources in buildings, models on indoor hygrothermal and air quality as well as thermal systems, and looks to ways to optimize the provision of ventilation and air-conditioning. Gaps of knowledge are identified and filled, not least by establishing links between knowledge that exist in the field of indoor air chemistry, modelling, and HVAC technology and controls
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