Ir. Wim Plokker (Scientific research manager Vabi Software)
Vabi Software Introduction Performance Assessment Dutch design practice Projects Vision Demonstration
Vabi Software Vabi. Kennis vertaald in software. De kracht van Vabi: Het vertalen van onze kennis in software voor gebruikers die optimaal presterende gebouwen willen combineren met optimale bedrijfsresultaten.
History of Vabi 1972 Association +10 Large consultancy firms
History of Vabi 1977 first overheating risk assessment program Together with air duct programs.
History of Vabi 1984 First PC version
History of Vabi 1999 Integrated Environment Berekeningen
History of Vabi 1972 Association 1977 first overheating risk assessment program running Together with piping programs. 1984 First PC version 1999 Integrated Environment 2005 Association to LTD 2006 EPBD software on a PDA 2011 Intelligente 3D design environment Vabi Elements 2011 Label data survey on tablet PC
Introduction Vabi From 1 application and 1 staff to: 28 staff 30 applications 2000 unique customers Installer round the corner Large engineering companies Housing corporations / EPBD Energy label consultants
Introduction Vabi Involvement in (inter)national standardisation and research projects (IEA,EU,CEN and ISO) Strategic alliances with Ministry of housing, ISSO, SenterNovem and TNO. Stimulate and fund research at TU/e
Introduction Vabi Calculation modules Residential / non-residential Buildings and Systems Pipes and Ducts Electrical Systems Solar Energy Labeling software
Different design stages D PoR PD FD C Use
Vabi als softwarebedrijf Gebouw Stroming Gebouw Stroming EPA-U EPA-W Energie Beleidssimulatie
Warmteverlies schil Warmteverlies detail Koellast schil Koellast detail Temperatuur Overschrijding Betonkernactivering Optimale stooklijnen Productiviteit Gebouw Gebouwsimulatie Elements Stroming Energie Leidingnet Tapwater Luchtkanalen Gasleiding Hemel- en vuilwaterafvoer.. EPG bestaande woning EPG nieuwbouw woning EPG bestaande utiliteitsbouw EPG nieuwbouw utiliteitsbouw..
Introduction Vabi Calculation modules Physics / first principle International Standards National Standards BESTEST / ASHRAE 140
Performances Requirements / role principal (cost/quality) Requirements /role architect System consultant (image, technique) Equipment design-process systems and building (dimensioning, control-strategy)
Performances Energy Energy Label kwh Electricity m 3 Gas Peak capacity / Year duration loads Balance between heating and cooling demand CO 2 emission [kg] Comfort????? Productivity?????
Performance Comfort Translation of a feeling in an actual testable performance Counting of hours above 25 / 28 C PMV / PPD EN ISO 7730 CEN EPBD WI 31/EN 15251 Adaptive thresholds values...
Performance PMV ISO 7730 PMV = (0,303e-2,100*M + 0,028)*[58,15*(M-W) Predicted Mean Vote Air temperature Radiation Humidity Air velocity Metabolism (effort) Clothing -3,05*10-3*[5733-406,7*(M-W)-pa]- 24,21*[(M-W)-1] -10-3*M*(5867-pa)-0,0814*M*(34-ta) -3,96*10-8*fcl*[(tcl+273)4 - (teq+273) 4] - fcl*hc,eq*(tcl-teq)]
Thermal performance CEN WI 31 Criteria for the Indoor Environment including thermal, indoor air quality, light and noise ATG 30 27 Ti (ºC) 24 21 18 15-5 0 5 10 15 20 25 30 Te,ref (ºC) Period: Utilization period only Temperature: Comfort temperature Type of building: Alpha Undercooling: Class A: 90% 1331 Class B: 80% 59 Class C: 65% 20 Overheating: 873 4 0 EN 15251
Simulation of performances Simulation For comfort assessment the (computer)model has to provide the following information: For every hour Air temperature Surface temperatures Humidity (air velocity)
Evolution of thermal performance in the Netherlands 1972 Start of Vabi 80 s Count hours > 25 C, 28 C» Limit 100 and 15 hours 90 s PMV > 0.5 weighting» Limit 150 hours 05 Adaptive thresholds» Function of running mean outdoor temperature» Function of the possibility of the user to control the climate 30 27 Ti (ºC) 24 21 18 15-5 0 5 10 15 20 25 30 Te,ref (ºC) Period: Utilization period only Temperature: Comfort temperature Type of building: Alpha Undercooling: Class A: 90% 1331 Class B: 80% 59 Class C: 65% 20 Overheating: 873 4 0
Thermal performance in the Netherlands Current situation 150 copies of the building simulation program. +/- 600 users use it in daily practice For almost all new office overheating risk is assessed. High quality residential building are also assessed
Productivity Performance Short sick leave versus ventilation rate per person (Rehva guideline no 6 fig 12) 1.0 Sick Leave relative to with no ventilation 0.8 0.6 0.4 0.2 0.0 0 20 40 60 80 100 Ventilation rate (l/s per person) Milton-offices Relative Productivity versus indoor air temperature (rehva guidebook no 6 fig 20) Relative Productivity (%) 100.0 95.0 90.0 85.0 80.0 75.0 15.0 20.0 25.0 30.0 35.0 Indoor air temperature ( C)
Productivity 20 18 Productivity loss over a day Annual cost per m 2 office 16 Productivity loss (%) 14 12 10 8 6 4 2 0 0 2 4 6 8 10 12 14 16 18 20 22 24 Hour of the day (h) short seak leave Productivity Ventilation Productivity Temperature Productivity - Total 3000 Euro Personnel 300 Euro Rent 30 Euro Energy costs 3 Euro 10% Energy savings
Results
Results Temperature ºC 50 40 30 3000 2400 1800 Energy (W) Outside temperature Air temperature Comfort temperature Air supply temperature Local cooling Cooling centraal Local heating Heating central Insolation Internal heating load 20 1200 10 600 0 0-10 -600 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours)
Results 30 27 Ti (ºC) 24 21 18 15-5 0 5 10 15 20 25 30 Te,ref (ºC) Period: Utilization period only Temperature: Comfort temperature Type of building: Alpha Overheating: Class A: 90% 244 Class B: 80% 27 Class C: 65% 4 Undercooling: 3 1 0
Results 2500 2000 Total heating: Total cooling: Total waste of energy: 105 kwh 566 kwh 34 kwh 1500 Energy (W) 1000 500 0-500 -1000-1500 -2000-2500 -15-10 -5 0 5 10 15 20 25 30 35 Heating Cooling Simultaneous heating and cooling Toutside (ºC)
Demonstration
Hoftoren Projects Hoftoren The Hague
Projects SHELL New Technology Centre Amsterdam
Vision Use Modern Simple Overview Navigation Visualisation Feedback Level of detail Optimisation Process Sketch-, Final-, Specification-and maintenance-phase Integration with CAD/BIM/Revit Integration with MS Office Integration with ERP, DMS, CRM Themes Energy and CO 2 Comfort Health Investment Maintenance costs Energy costs (Total cost of ownership)
Opbouw Vabi Elements
Opbouw Vabi Elements
Installatieconcept Hulpmiddelen Ruimtesjabloon Geometrie
Systeemconcept
Toewijzen sjablonen aan gebouwen
Toewijzen sjablonen aan ruimten
Begrenzingen Overschrijven
Dashboard
Resultaten Warmteverlies
Gebouwsimulatie: ATG-grafiek
Gebouwsimulatie: Temperaturen
Gebouwsimulatie: Behoefteprofiel
Gebouwsimulatie: Productiviteit
Vabi Software