Ventilation for buildings Energy performance of buildings Guidelines for inspection of air-conditioning systems- EN 15240

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Ventilation for buildingsEnergy performance of
buildingsGuidelines for inspection of
air-conditioning systems- EN 15240

• Jorma RAILIO
• FAMBSI, Finland
• jorma.railio_at_techind.fi

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Outline

• The EU CENSE project
• Inspections of air conditioning and ventilation
  systems - Background
• Scope of the Standard
• Principle of the method
• Reporting
• Annexes
• Feedback and future perspectives

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The EU CENSE project (Oct. 2007 - March 2010)

• Aim of the project
• To accelerate adoption and improved effectiveness
  of the EPBD related CEN- standards in the EU
  Member States
• These standards were successively published in
  the years 2007-2008 and are being implemented or
  planned to be implemented in many EU Member
  States. However, the full implementation is not a
  trivial task
• Main project activities
• To widely communicate role, status and content of
  these standards to provide guidance on the
  implementation
• To collect comments and good practice examples
  from Member States aiming to remove obstacles
• To prepare recommendations to CEN for a second
  generation of standards on the integrated energy
  performance of buildings

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Brief introduction

• A brief introduction to the CENSE project and the
  CEN-EPBD standards is provided in a separate
  presentation

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More information

• More information and downloads www.iee-cense.eu

Disclaimer CENSE has received funding from the
Communitys Intelligent Energy Europe programme
under the contract EIE/07/069/SI2.466698. The
content of this presentation reflects the authors
view. The author(s) and the European Commission
are not liable for any use that may be made of
the information contained therein. Moreover,
because this is an interim result of the project
any conclusions are only preliminary and may
change in the course of the project based on
further feedback from the contributors,
additional collected information and/or increased
insight.
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Inspections of air conditioning and ventilation
systems - Background Article 9 of the EPBD
requires measures to establish a regular
inspection of air-conditioning systems of an
effective rated output of more than 12 kW.
According to Article 10, these inspections
shall be carried out by qualified experts in an
independent manner.
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Background

• Why guidelines for the inspection of air
  conditioning systems ?
• Considering the impact of ventilation on the
  energy consumption of the buildings, CEN has
  decided to develop a methodology concerning the
  inspection of air conditioning systems.
• Why a European standard?
• Make possible to harmonise the various inspection
  principles, methods and practices in buildings
  between the Member States
• Increase the accessibility, transparency and
  objectivity of the assessment

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AIR CONDITIONING SYSTEM (EPBD Article 2)

• a combination of all components required to
  provide a form of air treatment in which
  temperature is controlled, possibly in
  combination with the control of ventilation,
  humidity and air cleanliness
• ventilation and its controls, if integrated in
  the system, are included

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• ARTICLE 9 INSPECTION OF AIR-CONDITIONING
  SYSTEMS
• With regard to reducing energy consumption and
  limiting carbon dioxide emissions, Member States
  shall lay down the necessary measures to
  establish a regular inspection of airconditioning
  systems of an effective rated output of more than
  12 kW.
• This inspection shall include an assessment of
  the air-conditioning efficiency and the sizing
  compared to the cooling requirements of the
  building. Appropriate advice shall be provided to
  the users on possible improvement or replacement
  of the air-conditioning system and on alternative
  solutions.

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EN 15240 main issues

• 4 INSPECTION PROCEDURE
• Pre-inspection and document collection
• Documents
• Building and system survey
• Advice in case of outdated, incomplete or
  missing documentation
• Methodology
• Inspection of the refrigeration equipment
• Inspection of pumps and chilled water pipe
  work
• Inspection of effectiveness of outdoor heat
  rejection
• Insp. of the effectiveness of heat exchange to
  the refrigeration system
• Inspection of air delivery systems in treated
  spaces
• Inspection of air delivery systems at air
  handling units and ductwork
• Inspection of air inlets to the system
• Inspection of the building system controls and
  control parameters Metering
• Reporting

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EN 15240 main issues (2)
5 ADVICE ON ALTERNATIVE SOLUTIONS AND
IMPROVEMENTS (adaptation to use load reduction
maintenance improvement -. Correcting functions
replacement more details in annex H annex
F gives examples of checklists observations,
advice)
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inspection report(just an extract from Annex G)

• ---
• Overall energy use and energy efficiency of the
  system -conclusive parameters to be presented
  when applicable
• specific fan power (SFP) and hours of operation
• heat or cooling load
• energy use for heating of supply air (including
  control)
• energy use for cooling of supply air (including
  control)
• performance of heat recovery devices and the
  performance of the system regarding desired and
  achieved indoor air quality by parameters such
  as airflow rates, draught, CO2 concentration in
  occupied zones and noise levels .
• energy use for pumps
• energy use for other cooling loads (chilled
  beams)
• heat or cooling capacity ---

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EN 15240, Annexes

• Examples of subsystems of air conditioning
  systems
• Examples of inspection classes of air
  conditioning systems
• Features affecting the frequency and duration of
  inspection
• Checklist of preinspection information
• Recommendations for the extent of the inspection
  (example inspection classes applied)
• Examples of checklists indicating observations
  and appropriate actions or advice
• Inspection report, example of contents
• Energy impacts(not yet quantified, only
  addressed)

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Experiences

• legislation new further guidance still in
  preparation (with just a few exceptions)
• frequency 5 or 10 years typical, may depend on
  size
• existing buildings the big question
• good maintenance to be encouraged
• systematic approach needed for systems where
  knowledge or documents lacking

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Inspections further developments

• Definition of air conditioning system
  rewording proposed, also to include ventilation
• More emphasis on inspection reports
• -recommendations for improvements
• -independent control for inspection reports

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More information

• More information and downloads www.iee-cense.eu

Disclaimer CENSE has received funding from the
Communitys Intelligent Energy Europe programme
under the contract EIE/07/069/SI2.466698. The
content of this presentation reflects the authors
view. The author(s) and the European Commission
are not liable for any use that may be made of
the information contained therein. Moreover,
because this is an interim result of the project
any conclusions are only preliminary and may
change in the course of the project based on
further feedback from the contributors,
additional collected information and/or increased
insight.