Improving Energy Efficiency in Buildings (IEEB) Energy Quarter, Ritaharju Monitoring

Transcription

1 Improving Energy Efficiency in Buildings (IEEB) Energy Quarter, Ritaharju Monitoring Kimmo Illikainen Oulu University of Applied Sciences Nordic Symposium on Energy Efficiency in Buildings Oulu, Finland, 27 September, 2013 Contents 1. Idea of Energy Quarter in Ritaharju 2. Building Physical simulation & monitoring, HAM (Heat And Moisture Analyses) 3. Energy simulation & monitoring 1

2 Energy Quarter, Ritaharju, Oulu Energy Quarter, Ritaharju, Oulu 2

3 Energy Quarter Lammi-House Concrete block Energy Quarter Kastelli House Wooden frame, Pre-cut Sensors 3

4 Energy Quarter JT Tuomela Wooden frame Wall element, On-site Roof element, On-site Energy Quarter Kontio House Log House Roof & 2nd Floor Elemnt On-site 12 minutes operation

5 Energy Quarter, Ritaharju, Oulu Why to monitor HAM? Most of new single family houses are build as low energy level in Oulu area Well insulated envelope; Wall, Floor and Roof Q: Do we have any risk for condensation? Q: Do we have any risk for mould grow? Q: Do we have any risk for ground freezing? Q: Do we have safety structures and solutions in low energy buildings? Energy Quarter, Ritaharju, Oulu Why to monitor Energy? Energy consumption in standard houses is well known Q: How do we use energy in low energy or passive houses? A: For heating? A: For hot water? A: For house electricity? A: For lightning? Q: How to reduce energy consumption in low energy buildings in the future? 5

6 Building Physics, Thermal Bridges L 2 D U l 1 l1 U2 2 T House U (W/m 2 K) l 1=l 2 (m 2 ) L 2D (W/mK) Ψ (W/mK) Wooden Concrete Building Physics, Thermal Bridges Simulation according new calculation guide based on EN Standard Comparisation to Finnish Building Code values 6

7 Building Physics, Thermal Bridges Several optimization to improve thermal bridges Good solutions: Detail Design Optimization improved detail Optimization chain necessary Low heat flux via thermal bridges can be achieved by optimazing, not by accident Building Physics, Sensor Installation T and RH sensors are individually designed and set up on each building Typically monitoring point per house with T and RH sensor installed 7

8 Building Physics, Monitoring devices Logger, (Mini PC/ Linux serv.) Internet Internet, 3G Server & Database (Web-hotel) A/D converter Sensor installation Temp & RH sensor Building Physics, Monitoring devices Each house has it s own individual monitoring. Measured data is saved lolaclly to the logger => send via 3G to the server => BuildMeOn.Com works as User Interface. User accounts are password protected. BuildMeOn Measured Data and Analysis tools Measured Data in the database Analysis 8

9 Building Physics, BuildMeOn.Com Generic platform for collecting measuring data Weather station database Boundary condion for simulation (Temp) Solar Radiation [W/m 2 ] Building Physics, BuildMeOn.Com Online database Dynamic User Interface Real time scaling and zoom for graph Dynamic sensor selection Temperature Relative Humidity 9

10 Building Physics, BuildMeOn.Com, Mould analyze Building Physics, BuildMeOn.Com, Mould analyze, Moisture Content Vaporized (RH 100%) Critical moisture (RH 80%) Real Moisture content [g/m 3 ] 10

11 Building Physics, BuildMeOn.Com, Mould analyze MoldIndexAnalyses.xls Excel-based application (Visual Basic app) Calculate based on measured or simulated data: Points amount in the critical area Critical time period for mould grow Total Mold Index Building Physics, BuildMeOn.Com, Mould analyze Plenty of mould (Index 4,6) Monitoring point behind elevation cladding, ventilated air space! 11

12 Building Physics, BuildMeOn.Com, Mould analyze Building Physics, Ground Temperature Q: Risk of ground freezing? 12

13 Energy Monitoring, IDA-ICE, Dynamic Simulation Energy consumption, simulation IDA-ICE Simulation Simulation results will be compared to measured values 13

14 Space Heat Demand, Simulation IDA ICE vs. PHPP simulation Envelope, Thermal Bridges Indoor heat capacity IDA-ICE [kwh] PHPP [kwh] n/a Sun radiation Incoming air heating indoor space Leaking Air -626 n/a Equipment Area An=131,5 m2 Atfa=142,2 m2 Total kwh/m2 102,8 107,8 Energy consumption, monitoring Fireplace with water envelope & Solar collectors Tekijä, pvm 14

15 Energy consumption, monitoring Solar Collector 30 days power [W] Complete history Trends etc from the database Energy consumption, monitoring Ventilation pre-heating & Floor Heating pictures by Fidelix Ltd.) 15

16 Energy consumption, monitoring Ventilation Energy consumption, monitoring Electricity 16