Retrofitted listed buildings using vacuum insulation panels

Transcription

1 Retrofitted listed buildings using vacuum insulation panels Dr. Pär Johansson Chalmers University of Technology QUALICHeCK WORKSHOP Performance of thermal insulation in low energy buildings and advanced building renovation projects MODULE 3: Super insulation materials, Brussels, Belgium, 15 December, 2016 Pär Johansson, CHALMERS,

2 % of building stock U-value of exterior wall Field study building (1.1) Year of construction Year of construction Ref: Boverket. (2010). Energi i bebyggelsen - tekniska egenskaper och beräkningar - resultat från projektet BETSI. Karlskrona, Sweden: Boverket. Pär Johansson, CHALMERS,

3 Ref: Mangold, M. (2016) Challenges of renovating the Gothenburg multi-family building stock - An analysis of comprehensive buildingspecific information, including energy performance, ownership and affordability. (PhD dissertation). Göteborg, Sweden: Chalmers University of Technology. Pär Johansson, CHALMERS,

4 Välten 1930 Photo: Sören Nilssons vykortssamling, 1930 Pär Johansson, CHALMERS,

5 Välten 2006 Photo: Melica, 2006 Pär Johansson, CHALMERS,

6 Interior or exterior insulation Listed buildings: Protected facades? Exterior insulation: Limited additional wall thickness? Interior insulation: What happens with the old construction? Pär Johansson, CHALMERS,

7 Thermal conductivity (mw/(m K)) What is super insulation?! Superinsulation! <25 Pär Johansson, CHALMERS,

8 Thermal conductivity (mw/(m K)) What is super insulation?! Superinsulation! <25 Pär Johansson, CHALMERS,

9 Less thickness of insulation layer 20 mm Pär Johansson, 140 mmchalmers,

10 Thermal conducivity (mw/(m K)) Thermal transport mechanisms Conduction gas (air) Density (kg/m 3 ) Pär Johansson, CHALMERS,

11 FIELD STUDY IN GÖTEBORG: KVARTERET MALÖRTEN Pär Johansson, CHALMERS,

12 Kvarteret Malörten, external insulation Landshövdingehus from 1930, renovated late 1970s, VIPs installed 2010 Reference Wood Brick Test wall 110 m 2 Ref: Johansson, P., Sasic Kalagasidis, A., and Hagentoft, C.-E. (2014). Retrofitting of a listed brick and wood building using vacuum insulation panels on the exterior of the facade: Measurements and simulations. Energy and Buildings, 73(April 2014), Pär Johansson, CHALMERS,

13 Kvarteret Malörten, external insulation Landshövdingehus from 1930, renovated late 1970s, VIPs installed 2010 Reference Wood Brick Test wall 110 m 2 Ref: Johansson, P., Sasic Kalagasidis, A., and Hagentoft, C.-E. (2014). Retrofitting of a listed brick and wood building using vacuum insulation panels on the exterior of the facade: Measurements and simulations. Energy and Buildings, 73(April 2014), Pär Johansson, CHALMERS,

14 Special attention to details Ref: Johansson, P., Sasic Kalagasidis, A., and Hagentoft, C.-E. (2014). Retrofitting of a listed brick and wood building using vacuum insulation panels on the exterior of the facade: Measurements and simulations. Energy and Buildings, 73(April 2014), Pär Johansson, CHALMERS,

15 Case study building Mineral wool VIP Ref: Johansson, P., Sasic Kalagasidis, A., and Hagentoft, C.-E. (2014). Retrofitting of a listed brick and wood building using vacuum insulation panels on the exterior of the facade: Measurements and simulations. Energy and Buildings, 73(April 2014), Pär Johansson, CHALMERS,

16 Before Details: roof After Energy use 159 kwh/m 2 Energy use 128 kwh/m 2-20% (2,4 kg CO 2 /m 2 ) Ref: Johansson, P., Sasic Kalagasidis, A., and Hagentoft, C.-E. (2014). Retrofitting of a listed brick and wood building using vacuum insulation panels on the exterior of the facade: Measurements and simulations. Energy and Buildings, 73(April 2014), Pär Johansson, CHALMERS,

17 Laboratory study: interior insulation Ref: Johansson, P., Geving, S., Hagentoft, C.-E., Jelle, B. P., Rognvik, E., Kalagasidis, A. S., and Time, B. (2014). Interior insulation retrofit of a historical brick wall using vacuum insulation panels: Hygrothermal numerical simulations and laboratory investigations. Building and Environment, 79(September 2014), Pär Johansson, CHALMERS,

18 VIP 600 x x 1000 VIP 500 x x 600 Laboratory study: interior insulation W1 S1 W3 RH5 RH1 RH6 W2 RH2 S2 W4 b,c b,c a a Ref: Johansson, P., Geving, S., Hagentoft, C.-E., Jelle, B. P., Rognvik, E., Kalagasidis, A. S., and Time, B. (2014). Interior insulation retrofit of a historical brick wall using vacuum insulation panels: Hygrothermal numerical simulations and laboratory investigations. Building and Environment, 79(September 2014), S3 RH3 S4 RH4 b c 10 mm Pär Johansson, CHALMERS,

19 Large-scale building envelope climate simulator Exterior side Control Interior side Ref: Johansson, P., Geving, S., Hagentoft, C.-E., Jelle, B. P., Rognvik, E., Kalagasidis, A. S., and Time, B. (2014). Interior insulation retrofit of a historical brick wall using vacuum insulation panels: Hygrothermal numerical simulations and laboratory investigations. Building and Environment, 79(September 2014), Wall Pär Johansson, CHALMERS,

20 Relative humidity (%) VIP 600 x 1000 VIP 500 x 600 RH in wooden beam surface RH W3c W4c Number of weeks Pär Johansson, CHALMERS, W1 S1 W3 S3 RH1 RH6 RH3 W2 RH2 Ref: Johansson, S2 P., Geving, S., Hagentoft, C.-E., W4 Jelle, B. P., Rognvik, E., RH4 Kalagasidis, A. S., S4 and Time, B. (2014). Interior insulation retrofit of a historical brick wall using vacuum insulation panels: Hygrothermal numerical simulations and laboratory investigations. Building and Environment, 79(September 2014),

21 Relative humidity (%) VIP 600 x 1000 VIP 500 x 600 RH in wooden beam surface RH W3c W4c W3c VIP W4c VIP Number of weeks Pär Johansson, CHALMERS, W1 S1 W3 S3 RH1 RH6 RH3 W2 RH2 Ref: Johansson, S2 P., Geving, S., Hagentoft, C.-E., W4 Jelle, B. P., Rognvik, E., RH4 Kalagasidis, A. S., S4 and Time, B. (2014). Interior insulation retrofit of a historical brick wall using vacuum insulation panels: Hygrothermal numerical simulations and laboratory investigations. Building and Environment, 79(September 2014),

22 Relative humidity (%) VIP 600 x 1000 VIP 500 x 600 RH in wooden beam center RH5 W1 W W3b W4b Number of weeks Pär Johansson, CHALMERS, S1 W3 S3 RH1 RH6 RH3 RH2 Ref: Johansson, S2 P., Geving, S., Hagentoft, C.-E., W4 Jelle, B. P., Rognvik, E., RH4 Kalagasidis, A. S., S4 and Time, B. (2014). Interior insulation retrofit of a historical brick wall using vacuum insulation panels: Hygrothermal numerical simulations and laboratory investigations. Building and Environment, 79(September 2014),

23 Relative humidity (%) VIP 600 x 1000 VIP 500 x 600 RH in wooden beam center RH5 W1 W W4b VIP W3b W4b Number of weeks W3b VIP Pär Johansson, CHALMERS, S1 W3 S3 RH1 RH6 RH3 RH2 Ref: Johansson, S2 P., Geving, S., Hagentoft, C.-E., W4 Jelle, B. P., Rognvik, E., RH4 Kalagasidis, A. S., S4 and Time, B. (2014). Interior insulation retrofit of a historical brick wall using vacuum insulation panels: Hygrothermal numerical simulations and laboratory investigations. Building and Environment, 79(September 2014),

24 Copenhagen, partial interior insulation Ref: Morelli, M., Rønby, L., Mikkelsen, S. E., Minzari, M. G., Kildemoes, T., and Tommerup, H. M. (2012). Energy retrofitting of a typical old Danish multi-family building to a nearly-zero energy building based on experiences from a test apartment. Energy and Buildings, 54(0), Pär Johansson, CHALMERS,

25 Conclusions VIPs in retrofitting can reduce the energy use substantially Field study: exterior insulation 20% energy use reduction (-31 kwh/m 2, year) Improved hygrothermal performance compared to reference Laboratory study: interior insulation Important with knowledge of brick and mortar properties Moisture content in the wooden beams increased slightly Pär Johansson, CHALMERS,

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27 VIP in external wall (plaster) Pilot site in Ebnat-Kappel, Switzerland Pär Johansson, CHALMERS,

28 VIP in external wall (plaster) VIP between protective boards Pär Johansson, CHALMERS,

29 Pär Johansson, CHALMERS,

30 Karlsruhe, external insulation Ref: Bauphysik. (2011). Aktuell. Bauphysik, 33(1), 73. Pär Johansson, CHALMERS,

31 Munich, external insulation Ref: Kubina, L. (2011). LockPlate System ETICS with Integrated VIP - Experience from Building Practice. Proceedings of the 10th International Vacuum Insulation Symposium, September 15-16, 2011, Ottawa, Canada. Pär Johansson, CHALMERS,

32 The sole responsibility for the content of this presentation lies with the authors. It does not necessarily reflect the opinion of the European Union. Neither the EASME nor the European Commission are responsible for any use that may be made of the information contained therein.