The current development in building energy efficiency towards nZEB buildings represents a number of new challenges to design and construction. One of these major challenges is the increased need for cooling in these highly insulated and airtight buildings, which is not only present in the summer period but also in the shoulder seasons and in offices even in midwinter. Resilient ventilative cooling can be an energy efficient solution to address this cooling challenge in buildings.
Mandatory or voluntary building airtightness testing has come gradually into force in many European countries mostly because of the increasing weight of building leakage energy impact on the overall energy performance of low-energy buildings. Therefore, airtightness levels of new buildings have significantly improved in the last decade, but a lot of questions remain regarding the durability of airtightness products.
Submitted by Maria.Kapsalaki on Tue, 10/05/2021 - 09:15
Building airtightness tests have become very common in many countries, either to comply with minimum requirements of regulations or programmes, or to justify input values in calculation methods. Thus, it has become very important to understand and quantify the reliability of these tests. According to the present ISO 9972 standard, the zero-flow pressure shall not exceed 5 Pa for the test to be valid. On one hand, in moderately windy conditions it may be impossible to perform a pressurisation test in accordance with the standard, even if an uncertainty analysis would show small test errors.
Submitted by Maria.Kapsalaki on Tue, 09/21/2021 - 10:58
This webinar, organized by the Air Infiltration and Ventilation Centre & the IEA EBC Annex 86 “Energy Efficient Indoor Air Quality Management in Residential Buildings” (https://annex86.iea-ebc.org/), addressed the opportunities to use novel materials (from advanced functional nano-materials to bio-based building materials) as building components to actively/passively manage the IAQ, for example, through active paint, wallboards, and textiles coated with advanced sorbents or catalysts and quantify their potential, based on the as
Submitted by Maria.Kapsalaki on Tue, 08/31/2021 - 16:03
An introduction to the analysis of metering data, the specification and limitations of the data and analysis techniques. Questions and Answer session. Feedback and questions from participants.
Submitted by Maria.Kapsalaki on Tue, 08/31/2021 - 16:01
Introduction to discrete time and continuous time methods (CTSM-R) and models together with statistical tools. Combining two disciplines; building physics and mathematical techniques. Application to exercise using PSA data series 16, 17. An overview was given of applied data and analysis with CTSM-R.
Submitted by Maria.Kapsalaki on Tue, 08/31/2021 - 15:59
Presenting the experimental set-up and measurement of the Plataforma Solar de Almeria data series 16, 17. An overview was given of available data and analysis topics, including brief examples. An exercise was proposed to study the analysis with and without solar radiation. Introduction to dynamic calculation methods and quick overview of the software tool LORD. The aim was to build confidence in analysis. As a training, an easy, conduction-only exercise with simulated data was proposed (result was given to the participants to gain confidence).
Submitted by Maria.Kapsalaki on Tue, 08/31/2021 - 15:55
Introduction to dynamic calculation methods and analysis techniques for thermal characterisation of building components and performance assessment of buildings. Introduction to measured data, instrumentation and sensors in relation to building physics and energy performance. What is important to know?
Submitted by Maria.Kapsalaki on Thu, 05/20/2021 - 10:43
Extensive research studies in many countries have found gaps between the design intent and real-world operation of buildings, which often lead to much higher energy use in practice than was estimated at design stage. While the reasons for such performance gaps are varied and complex, IEA Energy in Buildings and Communities (EBC) research projects have recently been making progress in resolving them.
Submitted by Maria.Kapsalaki on Tue, 03/30/2021 - 15:46
The current development in building energy efficiency towards nZEB buildings represents a number of new challenges to design and construction. One of these major challenges is the increased need for cooling in these highly insulated and airtight buildings, which is not only present in the summer period but also in the shoulder seasons and in offices even in midwinter. Resilient ventilative cooling can be an energy efficient solution to address this cooling challenge in buildings.
