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TWO STEPS FORWARD ONE STEP BACK

TWO STEPS FORWARD ONE STEP BACK Structural impediments for households to reduce carbon dioxide emissions and energy use for heating The new building regulations and the effect on the new built houses Tomas Persson, Tekn. dr Centrum för solenergiforskning SERC, Högskolan Dalarna

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TWO STEPS FORWARD ONE STEP BACK

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  1. TWO STEPS FORWARD ONE STEP BACK Structural impediments for households to reduce carbon dioxide emissions and energy use for heating The new building regulations and the effect on the new built houses Tomas Persson, Tekn. dr Centrum för solenergiforskning SERC, Högskolan Dalarna www.serc.se, tpe@du.se Programkonferens för Allmänna Energisystemstudier AES Katrineholm 6 – 7 maj 2009

  2. Focus of my presentation • New building regulations from 1:st of January 2010 • How do they affect the design of new single family houses? • What types of systems are possible and the most cost effective?

  3. New BBR (Boverkets byggregler) from 1:a jan 2010Does this open up for solar and pellet in new houses? Solar heating can help fulfilling the limit values Classified as electrically heated house if: there is no biomass heating boiler for permanent operation that covers heating and hot water demand The energy demand shall be followed up by measurements!

  4. The simulated house A = 143 m2 Well insulated/Passive Windows Uvalue = 1.0/0.9 W/m2K Floor insulation = 30 cm Walls = 26/41cm Ceiling = 50/57cm Floor heating

  5. Different heating systems and ventilation systems Solar heating system Exhaust HP (heat pump) 2 versions Exhaust air Exhaust/earth HP Ground coil Exhaust air HRV (Heat Recovery Ventialtion) Heat exchanger Pellet stoveExtended room heater Ground HP Outdoor air Exhaust air Supply air

  6. Exhaust HP, Pellet District heating needs HRV and maybe solar • Harder to meet the demands in Kiruna • Passive houses are close to the limit • Ordinary exhaust HP difficult in all climates.Condensing exhaust heat pumps possible

  7. SP have already made an investigation • Exhaust HP not possible without passive houses • Biofuel needs solar, HRV or passive house in Kiruna • With ground HP the houses need no improvement ENERGI&MILJÖ APRIL2009

  8. Economic evaluation (annual instalment method)

  9. How will the house builders adapt to the new regulations? • More condensing exhaust HP and ground HP and maybe not better insulation standard. • Wood/pellets+solar+HRV reasonable economical. • In Kiruna only ground heat pumps are possible in poorly insulated houses. • Using pellet/wood/district heating requires HRV (heat recovery ventilation or passive houses). • Passive houses almost not possible in Kiruna.

  10. Tack! Tomas Persson www.serc.se ahe@du.se http://users.du.se/~ahe/

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