Standard in calculation Energy and Indoor Environmental Simulation

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

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

Introduction Vabi Standard in calculation • 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, Senter. Novem and TNO. Wim Plokker rehva 2009

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

EPBD Software Energy Performance Assessment Standard in calculation • Standard Certificate • Custom-made Advice • Residential • Non residential – 5. 000 official certificates Wim Plokker rehva 2009

EPBD Software optimisation € 52, 500, 000 • Single dwelling € 47, 500, 000 – most efficient energy € 42, 500, 000 saving measures € 37, 500, 000 • Housing corporations € 32, 500, 000 € 27, 500, 000 – Database version € 22, 500, 000 0. 5 – Building stock – Optimisation over the building stock Standard in calculation 1 1. 5 2 • Policy : CO 2 reduction / Label steps Wim Plokker rehva 2009

Performance Simulation and EPBD Standard in calculation • (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. Wim Plokker rehva 2009

Performance Simulation Standard in calculation • Energy – Energy Label – k. Wh Electricity – m 3 Gas – Peak capacity / Year duration loads • CO 2 emission • Total cost of ownership • Comfort – PMV / Fanger • Productivity – ? ? ? Wim Plokker rehva 2009

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

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

Overheating risk assessment Standard in calculation • 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 Wim Plokker rehva 2009

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

Productivity Performance Wim Plokker Standard in calculation rehva 2009

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

Productivity Wim Plokker Standard in calculation rehva 2009

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

Productivity Wim Plokker Standard in calculation rehva 2009

Concluding Remarks Standard in calculation • 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 Wim Plokker rehva 2009