1 / 22

Retrofitting

Retrofitting. Bioclimatic building-insulation Amit Erel, Hyoyoung Kim, Mateo Sbresso . Table of Contents. Introduction How can we retrofit house? -Roofs -Windows -Walls Further Application & Conclusion. What is Retrofit?.

hedda
Download Presentation

Retrofitting

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Retrofitting Bioclimatic building-insulation Amit Erel, Hyoyoung Kim, Mateo Sbresso

  2. Table of Contents • Introduction • How can we retrofit house? -Roofs -Windows -Walls • Further Application & Conclusion

  3. What is Retrofit? • Retrofitting is the improving of existing buildings with energy efficiency equipment. • In this presentation we will mainly focus on insulation efficiency

  4. Why Do we Retrofit? • Energy efficiency usage • Decreasing costs of energy

  5. Why Do we Retrofit?

  6. Why Do we Retrofit?

  7. How Can We Retrofit • Walls • Roofs • Windows

  8. Roofs Why? Big Percentage!!

  9. Roofs • Why there is so much heat exchange through roofs? -Convection: Hot air goes up and interacts with exterior air. -Sunlight directly hits the roof!

  10. Roofs It’s very IMPORTANT to insulate the roof!

  11. Roofs 1. Double Ceiling • Adding another layer of ceiling • Inside the layer, it’s vacuum →no convection and conduction

  12. Roofs 2. Add reflective materials (Aluminum foils) -Reflects over 90% of the light it receives -Acts best in hot countries (like Israel!)

  13. Windows Install Window Insulation film film which can be applied to glass windows to reduce heat transfer.

  14. Windows Air has very low thermal conductivity. Air: 0.024 W/mK Glass: 0.96 W/mK

  15. Windows • The film has to be… -High R-value -Low conductivity -Sturdy -Good air-sealing

  16. Windows Plastic -Low heat conductivity -Easy to airseal

  17. Windows • Window accounts 15~30% of total heat loss of the building. • Normal window film reduces heat transfer thorught window by maximum 40% • Average window film costs 10~20$ per one and the heating cost is about 300$ for a month.

  18. Walls Panels We can decide what to put inside the core -Polyurethane foam -Styrofoam -cotton batt..

  19. Walls Epoxy +Cement • Epoxy: Very high R-value, but too expensive… • Cement: relatively cheap high density→ big thermal mass

  20. Conclusion • We use lots of energy in heating&cooling the house • By retrofitting, we can save a lot of energy, and cost for it. • There’re many different kinds of retrofitting, and most of them are cost-effective and easy to install.

  21. Thank you for Listening!

  22. References http://en.wikipedia.org/wiki/builing_insulation_material http://en.wikipedia.org/wiki/Thermal_mass http://www.penny-world.com/technical.html http://www.bpa.gov/energy/n/energy_tips/weatherization/InsulateCeiling.cfm http://en.wikipedia.org/wiki/Window_insulation_film http://en.wikipedia.org/wiki/Insulating_concrete_form http://en.wikipedia.org/wiki/Insulating_concrete_form

More Related