Title: +135.01=370.002-LC001T_04-SkyStar_UK_cat_99A4790100_Rev_N_02_17_s.pdf
Fresh air flow rates according to the performance approachUNI EN 13779:2008 and UNI 10339rev StandardsThe example reproduced at the bottom of the page shows how, with adequate air filtering, it is possible to decrease considerably the quantity of fresh air to be brought into the environment (up to 3-4 times less); the thermal energy dissipated due to ventilation is in fact in direct proportion to the number of air changes, as indicated in the following equation:Qv = ∆T · R · D · C · Vol. 3600 - Watt - °CQv = Thermal energy lost for ventilation ∆T = Indoor-Outdoor difference (T) R = A.C.H. D = Air density C = Specific air heat Vol = Room sizeKg/m3 - J/Kg-°C - m322CrystallConstruction features