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  • EN 13053:2006+A1:2011

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Ventilation for buildings - Air handling units - Rating and performance for units, components and sections

    Available format(s): 

    Superseded date:  19-12-2019

    Language(s): 

    Published date:  06-07-2011

    Publisher:  Comite Europeen de Normalisation

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Symbols and abbreviations
    5 Ratings and performance of the entire air handling unit
    6 Ratings and performance of the entire air handling unit
    7 Extended hygiene requirements for special applications
    8 Instructions for installation, operation and maintenance
    Annex A (informative) - Air handling units - Heat recovery
            - Defrosting - Requirements and testing
    Annex B (informative) - Air handling units - Heat recovery
            - Characteristics
    Bibliography

    Abstract - (Show below) - (Hide below)

    This European Standard specifies requirements and testing for ratings and performance of air handling units as a whole. It also specifies requirements, recommendations, classification, and testing of specific components and sections of air handling units. For many components and sections it refers to component standards, but it also specifies restrictions or applications of standards developed for stand alone components.This standard is applicable both to standardised designs, which may be in a range of sizes having common construction concepts, and also to custom-design units. It also applies both to air handling units, which are completely prefabricated, and to units which are built up on site. Generally the units within the scope of this standard include at least a fan, a heat exchanger and an air filter.This standard is not applicable to the following:a)air conditioning units serving a limited area in a building, such as fan coil units;b)units for residential buildings;c)units producing ventilation air mainly for a manufacturing process.

    General Product Information - (Show below) - (Hide below)

    Committee CEN/TC 156
    Development Note 2006 Edition Re-Issued in July 2011 & incorporates AMD 1 2011. (07/2011)
    Document Type Standard
    Publisher Comite Europeen de Normalisation
    Status Superseded
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    08/30162505 DC : DRAFT APR 2008 BS EN 15780 - VENTILATION FOR BUILDINGS - DUCTWORK - CLEANLINESS OF VENTILATION SYSTEMS
    05/30128645 DC : 0 EN 15241 - VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR ENERGY LOSSES DUE TO VENTILATION AND INFILTRATION IN COMMERCIAL BUILDINGS
    I.S. EN 13779:2007 VENTILATION FOR NON-RESIDENTIAL BUILDINGS - PERFORMANCE REQUIREMENTS FOR VENTILATION AND ROOM-CONDITIONING SYSTEMS
    14/30303741 DC : 0 BS EN 16282-1 - EQUIPMENT FOR COMMERCIAL KITCHENS - COMPONENTS FOR VENTILATION OF COMMERCIAL KITCHENS - PART 1: GENERAL REQUIREMENTS INCLUDING CALCULATION METHOD
    BS EN 15242:2007 Ventilation for buildings. Calculation methods for the determination of air flow rates in buildings including infiltration
    17/30356593 DC : 0 BS EN ISO 15138 - PETROLEUM AND NATURAL GAS INDUSTRIES - OFFSHORE PRODUCTION INSTALLATIONS - HEATING, VENTILATION AND AIR-CONDITIONING
    UNI EN 15780 : 2011 VENTILATION FOR BUILDINGS - DUCTWORK - CLEANLINESS OF VENTILATION SYSTEMS
    DIN EN 15780 E : 2012 VENTILATION FOR BUILDINGS - DUCTWORK - CLEANLINESS OF VENTILATION SYSTEMS
    S.R. CEN/TR 16798-4:2017 ENERGY PERFORMANCE OF BUILDINGS - VENTILATION FOR BUILDINGS - PART 4: INTERPRETATION OF THE REQUIREMENTS IN EN 16798-3 - FOR NON-RESIDENTIAL BUILDINGS - PERFORMANCE REQUIREMENTS FOR VENTILATION AND ROOM-CONDITIONING SYSTEMS (MODULES M5-1, M5-4)
    BS EN ISO 15138:2007 Petroleum and natural gas industries. Offshore production installations. Heating, ventilation and air-conditioning
    I.S. EN 16798-5-1:2017 ENERGY PERFORMANCE OF BUILDINGS - VENTILATION FOR BUILDINGS - PART 5-1: CALCULATION METHODS FOR ENERGY REQUIREMENTS OF VENTILATION AND AIR CONDITIONING SYSTEMS (MODULES M5-6, M5-8, M6-5, M6-8, M7-5, M7-8) - METHOD 1: DISTRIBUTION AND GENERATION
    PREN 16282-1 : DRAFT 2014 EQUIPMENT FOR COMMERCIAL KITCHENS - COMPONENTS FOR VENTILATION OF COMMERCIAL KITCHENS - PART 1: GENERAL REQUIREMENTS INCLUDING CALCULATION METHOD
    UNI EN ISO 15138 : 2008 PETROLEUM AND NATURAL GAS INDUSTRIES - OFFSHORE PRODUCTION INSTALLATIONS - HEATING, VENTILATION AND AIR-CONDITIONING
    ISO 15138:2007 Petroleum and natural gas industries Offshore production installations Heating, ventilation and air-conditioning
    EN 16798-3:2017 Energy performance of buildings - Ventilation for buildings - Part 3: For non-residential buildings - Performance requirements for ventilation and room-conditioning systems (Modules M5-1, M5-4)
    EN 16798-5-2:2017 Energy performance of buildings - Ventilation for buildings - Part 5-2: Calculation methods for energy requirements of ventilation systems (Modules M5-6, M5-8, M6-5, M6-8, M7-5, M7-8) - Method 2: Distribution and generation
    BS EN 12599:2012 Ventilation for buildings. Test procedures and measurement methods to hand over air conditioning and ventilation systems
    EN 12599:2012 Ventilation for buildings - Test procedures and measurement methods to hand over air conditioning and ventilation systems
    03/316890 DC : 0 EN 1886 - VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - MECHANICAL PERFORMANCE
    BS EN 15241:2007 Ventilation for buildings. Calculation methods for energy losses due to ventilation and infiltration in buildings
    15/30297468 DC : 0 BS EN 16798-3 - ENERGY PERFORMANCE OF BUILDINGS - PART 3: VENTILATION FOR NON-RESIDENTIAL BUILDINGS - PERFORMANCE REQUIREMENTS FOR VENTILATION AND ROOM-CONDITIONING SYSTEMS
    UNI EN 15423 : 2008 VENTILATION FOR BUILDINGS - FIRE PRECAUTIONS FOR AIR DISTRIBUTION SYSTEMS IN BUILDINGS
    DIN EN 16798-5-2 E : 2017 ENERGY PERFORMANCE OF BUILDINGS - VENTILATION FOR BUILDINGS - PART 5-2: CALCULATION METHODS FOR ENERGY REQUIREMENTS OF VENTILATION SYSTEMS (MODULES M5-6, M5-8, M6-5, M6-8, M7-5, M7-8) - METHOD 2: DISTRIBUTION AND GENERATION
    DIN EN 15242 E : 2007 VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR THE DETERMINATION OF AIR FLOW RATES IN BUILDINGS INCLUDING INFILTRATION
    DIN EN 15241:2011-06 VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR ENERGY LOSSES DUE TO VENTILATION AND INFILTRATION IN BUILDINGS
    PD CEN/TR 16798-4:2017 Energy performance of buildings. Ventilation for buildings Interpretation of the requirements in EN 16798-3. For non-residential buildings. Performance requirements for ventilation and room-conditioning systems(Modules M5-1, M5-4)
    I.S. EN 16798-5-2:2017 ENERGY PERFORMANCE OF BUILDINGS - VENTILATION FOR BUILDINGS - PART 5-2: CALCULATION METHODS FOR ENERGY REQUIREMENTS OF VENTILATION SYSTEMS (MODULES M5-6, M5-8, M6-5, M6-8, M7-5, M7-8) - METHOD 2: DISTRIBUTION AND GENERATION
    DIN EN 15423 E : 2008 VENTILATION FOR BUILDINGS - FIRE PRECAUTIONS FOR AIR DISTRIBUTION SYSTEMS IN BUILDINGS
    PREN 12599 : DRAFT 2010 VENTILATION FOR BUILDINGS - TEST PROCEDURES AND MEASUREMENT METHODS TO HAND OVER AIR CONDITIONING AND VENTILATION SYSTEMS
    DIN EN 16798-5-2:2015-06 (Draft) ENERGY PERFORMANCE OF BUILDINGS - VENTILATION FOR BUILDINGS - PART 5-2: CALCULATION METHODS FOR ENERGY REQUIREMENTS OF VENTILATION SYSTEMS (MODULES M5-6, M5-8, M6-5, M6-8, M7-5, M7-8) - METHOD 2: DISTRIBUTION AND GENERATION
    PD CEN/TS 16244:2018 Ventilation in hospitals. Coherent hierarchic structure and common terms and definitions for a standard related to ventilation in hospitals
    I.S. EN 1886:2007 VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - MECHANICAL PERFORMANCE
    DIN EN 1886:2009-07 Ventilation for buildings - Air handling units - Mechanical performance
    I.S. EN 12599:2012 VENTILATION FOR BUILDINGS - TEST PROCEDURES AND MEASUREMENT METHODS TO HAND OVER AIR CONDITIONING AND VENTILATION SYSTEMS
    VDI 3803 Blatt 4:2012-09 Air-conditioning, system requirements - Air filter systems (VDI Ventilation Code of Practice)
    VDI 2050 Blatt 4:2011-11 Requirements for mechanical equipment rooms - Ventilation and air-conditioning
    VDI 3803-1 : 2010 COR 2010 AIR-CONDITIONING - CENTRAL AIR-CONDITIONING SYSTEMS - STRUCTURAL AND TECHNICAL PRINCIPLES (VDI VENTILATION CODE OF PRACTICE)
    VDI 3803 Blatt 5:2013-04 Air-conditioning, system requirements - Heat recovery systems (VDI Ventilation Code of Practice)
    I.S. EN ISO 15138:2007 PETROLEUM AND NATURAL GAS INDUSTRIES - OFFSHORE PRODUCTION INSTALLATIONS - HEATING, VENTILATION AND AIR-CONDITIONING
    15/30299483 DC : 0 BS EN 16798-5-1 - ENERGY PERFORMANCE OF BUILDINGS - MODULES M5-6, M5-8, M6-5, M6-8, M7-5, M7-8 - VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR ENERGY REQUIREMENTS OF VENTILATION AND AIR CONDITIONING SYSTEMS - PART 5-1: DISTRIBUTION AND GENERATION (REVISION OF EN 15241) - METHOD 1
    DIN EN 16798-3 E : 2017 ENERGY PERFORMANCE OF BUILDINGS - VENTILATION FOR BUILDINGS - PART 3: FOR NON-RESIDENTIAL BUILDINGS - PERFORMANCE REQUIREMENTS FOR VENTILATION AND ROOM-CONDITIONING SYSTEMS (MODULES M5-1, M5-4)
    10/30235574 DC : 0 BS EN 12599 - VENTILATION FOR BUILDINGS - TEST PROCEDURES AND MEASUREMENT METHODS TO HAND OVER AIR CONDITIONING AND VENTILATION SYSTEMS
    UNE-EN 15780:2012 Ventilation for buildings - Ductwork - Cleanliness of ventilation systems
    I.S. EN 15780:2011 VENTILATION FOR BUILDINGS - DUCTWORK - CLEANLINESS OF VENTILATION SYSTEMS
    I.S. EN 15241:2007 VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR ENERGY LOSSES DUE TO VENTILATION AND INFILTRATION IN BUILDINGS
    I.S. EN 15423:2008 VENTILATION FOR BUILDINGS - FIRE PRECAUTIONS FOR AIR DISTRIBUTION SYSTEMS IN BUILDINGS
    EN 15242:2007 Ventilation for buildings - Calculation methods for the determination of air flow rates in buildings including infiltration
    UNI EN 12599 : 2012 VENTILATION FOR BUILDINGS - TEST PROCEDURES AND MEASUREMENT METHODS TO HAND OVER AIR CONDITIONING AND VENTILATION SYSTEMS
    UNI EN 1886 : 2008 VENTILATION FOR BUILDINGS - AIR HANDLING UNITS - MECHANICAL PERFORMANCE
    UNI EN 13779 : 2008 VENTILATION FOR NON-RESIDENTIAL BUILDINGS - PERFORMANCE REQUIREMENTS FOR VENTILATION AND ROOM-CONDITIONING SYSTEMS
    CEN/TR 16798-4:2017 Energy performance of buildings - Ventilation for buildings - Part 4: Interpretation of the requirements in EN 16798- 3 - For non-residential buildings - Performance requirements for ventilation and room-conditioning systems(Modules M5-1, M5-4)
    BS EN 15780:2011 Ventilation for buildings. Ductwork. Cleanliness of ventilation systems
    BS EN 16798-5-2:2017 Energy performance of buildings. Ventilation for buildings Calculation methods for energy requirements of ventilation systems (Modules M5-6, M5-8, M6-5, M6-8, M7-5, M7-8). Method 2: Distribution and generation
    UNI EN 15242 : 2008 VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR THE DETERMINATION OF AIR FLOW RATES IN BUILDINGS INCLUDING INFILTRATION
    DIN EN 15241 E : 2011 VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR ENERGY LOSSES DUE TO VENTILATION AND INFILTRATION IN BUILDINGS
    DIN EN 15242:2007-09 VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR THE DETERMINATION OF AIR FLOW RATES IN BUILDINGS INCLUDING INFILTRATION
    BS EN 15423:2008 Ventilation for buildings. Fire precaution for air distribution systems in buildings
    DIN EN 16798-3:2017-11 ENERGY PERFORMANCE OF BUILDINGS - VENTILATION FOR BUILDINGS - PART 3: FOR NON-RESIDENTIAL BUILDINGS - PERFORMANCE REQUIREMENTS FOR VENTILATION AND ROOM-CONDITIONING SYSTEMS (MODULES M5-1, M5-4)
    15/30316978 DC : 0 BS EN 16798-5-2 - ENERGY PERFORMANCE OF BUILDINGS - MODULES M5-6, M5-8 - VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR ENERGY REQUIREMENTS OF VENTILATION SYSTEMS - PART 5-2: DISTRIBUTION AND GENERATION (REVISION OF EN 15241) - METHOD 2
    EN 16798-5-1:2017 Energy performance of buildings - Ventilation for buildings - Part 5-1: Calculation methods for energy requirements of ventilation and air conditioning systems (Modules M5-6, M5-8, M6-5, M6-8, M7-5, M7-8) - Method 1: Distribution and generation
    S.R. CEN/TS 16244:2018 VENTILATION IN HOSPITALS - COHERENT HIERARCHIC STRUCTURE AND COMMON TERMS AND DEFINITIONS FOR A STANDARD RELATED TO VENTILATION IN HOSPITALS
    EN ISO 15138:2007 Petroleum and natural gas industries - Offshore production installations - Heating, ventilation and air-conditioning (ISO 15138:2007)
    DIN EN 12599:2013-01 VENTILATION FOR BUILDINGS - TEST PROCEDURES AND MEASUREMENT METHODS TO HAND OVER AIR CONDITIONING AND VENTILATION SYSTEMS
    BS ISO 16814:2008 Building environment design. Indoor air quality. Methods of expressing the quality of indoor air for human occupancy
    BS EN 1886:2007 Ventilation for buildings. Air handling units. Mechanical performance
    ISO 16814:2008 Building environment design Indoor air quality Methods of expressing the quality of indoor air for human occupancy
    BS EN 13779:2007 Ventilation for non-residential buildings. Performance requirements for ventilation and room-conditioning systems
    EN 15423:2008 Ventilation for buildings - Fire precautions for air distribution systems in buildings
    EN 13779:2007 Ventilation for non-residential buildings - Performance requirements for ventilation and room-conditioning systems
    EN 15241:2007/AC:2011 VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR ENERGY LOSSES DUE TO VENTILATION AND INFILTRATION IN BUILDINGS
    EN 1886:2007 Ventilation for buildings - Air handling units - Mechanical performance
    EN 15780:2011 Ventilation for buildings - Ductwork - Cleanliness of ventilation systems
    05/30128661 DC : 0 EN 13779 - VENTILATION FOR NON RESIDENTIAL BUILDINGS - PERFORMANCE REQUIREMENTS FOR VENTILATION AND ROOM-CONDITIONING SYSTEMS
    DIN EN 15423:2008-09 VENTILATION FOR BUILDINGS - FIRE PRECAUTIONS FOR AIR DISTRIBUTION SYSTEMS IN BUILDINGS
    DIN EN 15780:2012-01 Ventilation for buildings - Ductwork - Cleanliness of ventilation systems
    15/30297495 DC : 0 BS EN 16798-7 - ENERGY PERFORMANCE OF BUILDINGS - PART 7: VENTILATION FOR BUILDINGS - MODULES M5-1, M5-5, M5-6, M5-8 - CALCULATION METHODS FOR THE DETERMINATION OF AIR FLOW RATES IN BUILDINGS INCLUDING INFILTRATION
    BS EN 16798-5-1:2017 Energy performance of buildings. Ventilation for buildings Calculation methods for energy requirements of ventilation and air conditioning systems (Modules M5-6, M5-8, M6-5, M6-8, M7-5, M7-8). Method 1: Distribution and generation
    05/30128642 DC : 0 PREN 15242 - VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR THE DETERMINATION OF AIR FLOW RATES IN BUILDINGS INCLUDING INFILTRATION
    I.S. EN 15242:2007 VENTILATION FOR BUILDINGS - CALCULATION METHODS FOR THE DETERMINATION OF AIR FLOW RATES IN BUILDINGS INCLUDING INFILTRATION
    CEN/TS 16244:2018 Ventilation in hospitals - Coherent hierarchic structure and common terms and definitions for a standard related to ventilation in hospitals
    I.S. EN 16798-3:2017 ENERGY PERFORMANCE OF BUILDINGS - VENTILATION FOR BUILDINGS - PART 3: FOR NON-RESIDENTIAL BUILDINGS - PERFORMANCE REQUIREMENTS FOR VENTILATION AND ROOM-CONDITIONING SYSTEMS (MODULES M5-1, M5-4)
    DIN EN 16798-5-2:2017-11 ENERGY PERFORMANCE OF BUILDINGS - VENTILATION FOR BUILDINGS - PART 5-2: CALCULATION METHODS FOR ENERGY REQUIREMENTS OF VENTILATION SYSTEMS (MODULES M5-6, M5-8, M6-5, M6-8, M7-5, M7-8) - METHOD 2: DISTRIBUTION AND GENERATION
    DIN EN 13779:2007-09 VENTILATION FOR NON-RESIDENTIAL BUILDINGS - PERFORMANCE REQUIREMENTS FOR VENTILATION AND ROOM-CONDITIONING SYSTEMS

    Standards Referencing This Book - (Show below) - (Hide below)

    EN 1886:2007 Ventilation for buildings - Air handling units - Mechanical performance
    ISO 13348:2007 Industrial fans — Tolerances, methods of conversion and technical data presentation
    EN ISO 5136:2009 Acoustics - Determination of sound power radiated into a duct by fans and other air-moving devices - In-duct method (ISO 5136:2003)
    ISO 3744:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane
    EN 305:1997 Heat exchangers - Definitions of performance of heat exchangers and the general test procedure for establishing performance of all heat exchangers
    ISO 5168:2005 Measurement of fluid flow — Procedures for the evaluation of uncertainties
    ISO 9614-1:1993 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points
    EN 12792:2003 Ventilation for buildings - Symbols, terminology and graphical symbols
    EN ISO 3741:2010 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for reverberation test rooms (ISO 3741:2010)
    ISO 9614-2:1996 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 2: Measurement by scanning
    EN 10088-2:2014 STAINLESS STEELS - PART 2: TECHNICAL DELIVERY CONDITIONS FOR SHEET/PLATE AND STRIP OF CORROSION RESISTING STEELS FOR GENERAL PURPOSES
    EN 779:2012 Particulate air filters for general ventilation - Determination of the filtration performance
    EN ISO 7235:2009 Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss (ISO 7235:2003)
    ISO 5801:2017 Fans — Performance testing using standardized airways
    EN ISO 5167-1:2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 1: General principles and requirements (ISO 5167-1:2003)
    ISO 3746:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Survey method using an enveloping measurement surface over a reflecting plane
    EN ISO 3746:2010 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane (ISO 3746:2010)
    EN 308:1997 Heat exchangers - Test procedures for establishing performance of air to air and flue gases heat recovery devices
    EN ISO 3744:2010 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO 3744:2010)
    ISO 5167-1:2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements
    ISO 9614-3:2002 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 3: Precision method for measurement by scanning
    EN ISO 9614-2 : 1996 ACOUSTICS - DETERMINATION OF SOUND POWER LEVELS OF NOISE SOURCES USING SOUND INTENSITY - PART 2: MEASUREMENT BY SCANNING
    IEC 60034-2:1972 Rotating electrical machines. Part 2: Methods for determining losses and efficiency of rotating electrical machinery from tests (excluding machines for traction vehicles)
    EN 1751:2014 Ventilation for buildings - Air terminal devices - Aerodynamic testing of damper and valves
    EN ISO 9614-3:2009 Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 3: Precision method for measurement by scanning (ISO 9614-3:2002)
    ISO 3741:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms
    EN 60034-2:1996/A2:1996 ROTATING ELECTRICAL MACHINES - PART 2: METHODS FOR DETERMINING LOSSES AND EFFICIENCY OF ROTATING ELECTRICAL MACHINERY FROM TESTS (EXCLUDING MACHINES FOR TRACTION VEHICLES)
    ISO 7235:2003 Acoustics — Laboratory measurement procedures for ducted silencers and air-terminal units — Insertion loss, flow noise and total pressure loss
    EN 1216:1998/A1:2002 HEAT EXCHANGERS - FORCED CIRCULATION AIR-COOLING AND AIR-HEATING COILS - TEST PROCEDURES FOR ESTABLISHING THE PERFORMANCE
    ISO 5221:1984 Air distribution and air diffusion Rules to methods of measuring air flow rate in an air handling duct
    EN 13779:2007 Ventilation for non-residential buildings - Performance requirements for ventilation and room-conditioning systems
    ISO 3966:2008 Measurement of fluid flow in closed conduits Velocity area method using Pitot static tubes
    ISO 5136:2003 Acoustics — Determination of sound power radiated into a duct by fans and other air-moving devices — In-duct method
    EN ISO 9614-1:2009 Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1: Measurement at discrete points (ISO 9614-1:1993)
    EN 13030:2001 Ventilation for buildings - Terminals - Performance testing of louvres subjected to simulated rain
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