Transcription of Ventilation for buildings — Calculation methods for the ...
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Document type: European Standard Document subtype: Document stage: Formal Vote Document language: E J:\Intcom\CEN\CEN 156\prEN 15242\prEN STD Version CEN/TC 156 Date: 2006 prEN 15242 CEN/TC 156 Secretariat: BSI Ventilation for buildings Calculation methods for the determination of air flow rates in buildings including infiltration ICS: Descriptors: prEN 15242:2006 (E) 2 Contents Page Foreword .. 4 Introduction .. 5 1 7 2 Normative references .. 7 3 Terms and 8 4 Symbols and abbreviations .. 10 5 General 11 6 Instantaneous Calculation (iterative method).. 14 Basis of the Calculation method .. 14 Mechanical air flow Calculation .. 15 Introduction .. 15 Required air flow qv-sup-req and qv-exh 15 Cuse 15 Ventilation effectiveness 15 Local air flow control Coefficient 16 Csyst coefficient.
15251 Specification of criteria for the internal environment (thermal, lighting, indoor air quality) The calculation of the airflows through the building envelope and the ventilation system for a given situation is first described (chapter 6). Applications depending on the entended uses are described in chapter 7.
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