Energy and Indoor Environmental Simulation

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Energy and Indoor Environmental Simulation
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Contents

• Introduction Vabi
• EPBD software
• Performance simulation
• Energy-gt Co2-gt PMV-gt Productivity

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Introduction Vabi

• Association 1972, 1800 unique customers
• Combination of software company, knowledge centre
  for calculations.
• Software for sizing installation equipment and
  assessing building performances
• Strategic alliances with Ministry of housing,
  ISSO, SenterNovem and TNO.

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Introduction Vabi

• Developed over 25 calculation engines together
  with TNO.
• Involvement in (inter)national standardisation
  and research projects (IEA,EU,Cen and ISO)

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EPBD SoftwareEnergy Performance Assessment

• Standard Certificate
• Custom-made Advice
• Residential
• Non residential
• 5.000 official certificates

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EPBD Software optimisation

• Single dwelling
• most efficient energysaving measures
• Housing corporations
• Database version
• Building stock
• Optimisation over the building stock
• Policy CO2 reduction / Label steps

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Performance Simulationand EPBD

• (9) The measures further to improve the energy
  performance of buildings should take into account
  climatic and local conditions as well as indoor
  climate environment and cost-effectiveness. They
  should not contravene other essential
  requirements concerning buildings such as
  accessibility, prudence and the intended use of
  the building.

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Performance Simulation

• Energy
• Energy Label
• kWh Electricity
• m3 Gas
• Peak capacity / Year duration loads
• CO2 emission
• Total cost of ownership
• Comfort
• PMV / Fanger
• Productivity
• ?????

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Performance Simulation
Typical EPBD softwareMonthly Building Output
Typical Building Performance Simulation Hourly
Zonal Output
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Performance PMV

• Predicted Mean Vote
• Air temperature
• Radiation
• Humidity
• Air velocity
• Metabolism (effort)
• Clothing

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Overheating risk assessment

• Comfort
• Translation of a feeling in an actual assessable
  performance
• Counting of hours above 25 / 28 C
• PMV / PPD EN ISO 7730
• CEN EPBD WI 31/EN 15251
• Adaptive thresholds values
• gt 90 of all office buildings are assessedin the
  Netherlands

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Thermal performance
CEN WI 31 Criteria for the Indoor Environment
including thermal, indoor air quality, light and
noise
EN 15251
ATG
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Productivity Performance
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Productivity
Minimum ventilation rate
Double ventilation rate
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Productivity
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Productivity

• Annual cost per m2 office
• 3000 Euro Personnel
• 300 Euro Rent
• 30 Euro Energy costs
• 3 Euro 10 Energy savings

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Productivity
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Concluding Remarks

• Rehva Guidebook 6Indoor Climate and
  Productivity in Offices is a big step towards
  Productivity as a performance indicator
• Integrating Productivity in Building Performance
  Simulation makes a balanced trade-off between
  Investment / Energy performance / Productivity
  possible