1. Standard in calculation Wim Plokker rehva 2009 Energy and Indoor Environmental Simulation

2. Standard in calculation Wim Plokker rehva 2009 Contents Introduction Vabi EPBD software Performance simulation Energy-> Co2-> PMV-> Productivity

3. Standard in calculation Wim Plokker rehva 2009 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.

4. Standard in calculation Wim Plokker rehva 2009 Introduction Vabi Developed over 25 calculation engines together with TNO. Involvement in (inter)national standardisation and research projects (IEA,EU,Cen and ISO)

5. Standard in calculation Wim Plokker rehva 2009 EPBD Software Energy Performance Assessment Standard Certificate Custom-made Advice Residential Non residential –5.000 official certificates

6. Standard in calculation Wim Plokker rehva 2009 EPBD Software optimisation Single dwelling –most efficient energy saving measures Housing corporations –Database version –Building stock –Optimisation over the building stock Policy : CO 2 reduction / Label steps

7. Standard in calculation Wim Plokker rehva 2009 Performance Simulation and 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.

8. Standard in calculation Wim Plokker rehva 2009 Performance Simulation Energy –Energy Label –kWh Electricity –m 3 Gas –Peak capacity / Year duration loads CO2 emission Total cost of ownership Comfort –PMV / Fanger Productivity –?????

9. Standard in calculation Wim Plokker rehva 2009 Performance Simulation Typical EPBD software Monthly Building Output Typical Building Performance Simulation Hourly Zonal Output

10. Standard in calculation Wim Plokker rehva 2009 Predicted Mean Vote Air temperature Radiation Humidity Air velocity Metabolism (effort) Clothing Performance PMV

11. Standard in calculation Wim Plokker rehva 2009 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 > 90% of all office buildings are assessed in the Netherlands

12. Standard in calculation Wim Plokker rehva 2009 Thermal performance CEN WI 31 Criteria for the Indoor Environment including thermal, indoor air quality, light and noise EN 15251ATG

13. Standard in calculation Wim Plokker rehva 2009 Productivity Performance

14. Standard in calculation Wim Plokker rehva 2009 Productivity Minimum ventilation rate Double ventilation rate

15. Standard in calculation Wim Plokker rehva 2009 Productivity

16. Standard in calculation Wim Plokker rehva 2009 Productivity Annual cost per m 2 office 3000 Euro Personnel 300 Euro Rent 30 Euro Energy costs 3 Euro 10% Energy savings

17. Standard in calculation Wim Plokker rehva 2009 Productivity

18. Standard in calculation Wim Plokker rehva 2009 Concluding Remarks Rehva Guidebook 6 “Indoor 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