Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 15:48
Purpose of the work
With the German Energy Savings Regulation EnEV 2014 the legislators have qualified the requirements for large apartment buildings (VL > 1.500 m³). In addition to the air change rate (n50 ≤ 3,0 h-1 or n50 ≤ 1,5 h-1 depending on the ventilation technology used) the envelope-based air permeability (q50 ≤ 2,5 m³h-1m-2) is now also required.
Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 15:02
Environmental control (heat, air and moisture flows and their effects) started 90 years ago on Prairies of Canada and USA. It has always been based on occupant’s interest in a better indoor environment and driven by builders. More recently, when energy efficiency and durability considerations became part of socio-economic requirements of the society this part of building physics was shifted to the interests of governments.
Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 13:08
Proposals for solutions in accordance with German standard DIN 4108 Teil 7 What does real life look like? What can actually be solved? Challenges, interface issues between the different trades and crafts, and possible suggestions for solutions.
Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 13:04
Purpose of the work
Can the minimum air change in naturally window-ventilated units be covered only through leakages?
Content of the presentation
In general, the infiltration airflow rate is dependent on meteorological conditions, especially wind pressure on the building / unit, and with regard to thermal effects, the temperature differential between the interior and the exterior, i.e. the infiltration airflow varies strongly.
Submitted by Maria.Kapsalaki on Thu, 01/28/2021 - 10:44
Purpose of the work
In Belgium, airtightness of buildings is taken into account in the regional Energy Performance of Buildings (EPB) regulations. When measured, it can be used in the calculation in place of a default unfavourable value and therefore improve the calculated performance.
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