5. Calculation of extracted and blown air flows

5.1 Principle

This section describes the calculation of temperatures, supply and extract air humidity and auxiliary power ratings. It also describes the energy impact of fans and their management modes.

The calculation method is based on the simplified modelling of a constant flow or hygienic double flow ventilation system described and based on the European standard NF EN 15241.

5.1.1 Duct-mouth system

It is used to model all air intake and supply devices.

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