1 / 21

NEW APPROACH FOR UNDERFLOOR HEATING WITH THE USAGE OF PHASE CHANGING MATERIALS

‘Sustainergy’ 2 nd International Youth Competition 2-6 March 2013. NEW APPROACH FOR UNDERFLOOR HEATING WITH THE USAGE OF PHASE CHANGING MATERIALS. H erman Yu val (Israel) Sorrentino Elisa (Italy) Mordechai Lihen (Israel ). Why improve energy consumption in buildings ?.

adonai
Download Presentation

NEW APPROACH FOR UNDERFLOOR HEATING WITH THE USAGE OF PHASE CHANGING MATERIALS

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. ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013 NEW APPROACH FOR UNDERFLOOR HEATING WITH THE USAGE OF PHASE CHANGING MATERIALS Herman Yuval (Israel) Sorrentino Elisa (Italy) MordechaiLihen (Israel)

  2. Why improve energy consumption in buildings ? • Consumes about 40% of the world’s energy. • Are responsible for 50% of the CO2 emissions. ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  3. Figure 1: energy use for heating Infra - red under-floor heating ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  4. Radiant under-floor heating advantages - Heating uniformity - Energy consumption reduces by 20 - 40% • - Heat as sunrays -in term of health Figure 2: Comparison between conventional and radiant heating ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  5. Comparison of Radiant Heat Technologies

  6. Disadvantages of the best existing under-floor heating systems • Energy consumption remains high • Heating system coverage of the floor is only up to 30% • Heating uniformity is relatively bad • Safety issues (may develop flames) ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  7. Our Goals To improve the thermal comfort To improve energy efficiency To reduce the electricity bill ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  8. Our idea - PCM floor PCM Floor Heating Mat Insulation material Floor Slab Figure3: Structure of the new floor

  9. What are PCMs? Figure 4: Pcms action Figure 5: Pcms melting point graph

  10. Why use Paraffin as our PCM? Melting point: 18-22°C Heating fusion: 172 kj/kg Cost : 2.5- 3.5 $/Kg Figure 6: paraffin PCM

  11. Heating Estimations Calculations for 1m2 of the floor BASF ‘s Micronal P.C.M panel L= 330 kJ/m2 P = 100W = 0.1KJ/s S= 1 m2 L= latent heat capacity P= thermal power S= area t= time Q= thermal energy ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  12. Using Electricity differential tariff for our on the system benefit 23:00 to 6:00 – 0.7×normal tariff figure 7: Israel tariff The PCM floor allows to switch the system on only during night time ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  13. Heating Estimations Calculations for 1m2 of the floor ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  14. Cooling of the floor Cooling time: 18h Cooling power: P= Q/t p= 33.3 W/m2 Figure 8: Heating loss from a house ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  15. Advantages of new heater • Energy saving – till 15% • Floor temperature close to the room temperature • High covered area - till 90% • Long life time • High safety Figure 9: New approach for heating systems

  16. CONCLUSION We improved the thermal comfort by providing a heating uniformity inside the room through the whole day. We reduced the electricity bill by switching the system on for only 7 hours in cheapest time. We improved energy efficiency by using a new heating system that prevents energy lost by covering more surface. ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  17. How we see the future of PCM usage? • Heating panels with high Latent Heat • Panel weight reducing • High surface area of heating elements • Walls with PCM material • Roof with PCM material • Wind or solar panels provide electricity ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  18. References • http://www.apartmenttherapy.com/on-the-horizon-building-with-p-124682 • http://en.wikipedia.org/wiki/Economy_7 • http://www.micronal.de/portal/basf/ien/dt.jsp?setCursor=1_290798 • http://www.lowex.info/projekte/Importe/projekt08/Techn%20data%20PCM%20SmartBoard%20E.pdf • http://www.lowex.info/projekte/Importe/projekt08/FL_SmartBoard_e.pdf • http://www.cmsl.co.nz/assets/sm/5720/61/1635AliceHarland.pdf ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  19. THANK YOU! For every one who helped us during these past few months, days and hours. To Naama, our advisors, Eli , the judges and everyone else we forgot…

  20. Ribbonsversus Wires Carpet Normal tariff in UK 17, 85 kw/h Night tariff 0,7*17,85=12.49 kw/h • Faster warming • Energy saving • Cheap insulation layer • Uniform heat ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

  21. Calculations for the PCM floortaken from Micronal’s PCM panel Characteristics of the Micronal panel: • Thickness: 15 mm • Width: 1250 mm • Length: 2000 mm • Weight: 11,5 kg/m² • Operating temp. 23°C or 26°C • Latent heat capacity : 330 kJ/m² • Specific heat capacity: 1.20 kJ/kg K • Heat conductivity: 0.134 W/m K ‘Sustainergy’ 2nd International Youth Competition 2-6 March 2013

More Related