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Posted By: fostertom(and inner plasterboard too) carried on the flatstrap noggings
Posted By: fostertompuncture the pbd for electrics etc as much as you like.
Posted By: djhI thought that the rule of thumb for breathing construction was that the inner barrier should be five times less permeable than the outer barrier?
Posted By: spoonandforkwhat happens where the OSB and EWI (EPS?) meets the ground Tom?
Posted By: spoonandforkViking, the first drawing you posted - just to make sure I understand - comprises from top to bottom:internal floor with UFH pipes buried at the lowest part100mm polystyreneSolar slab with a dpm in the middle and heating pipes running through the lowest part300mm polystyrenefoundationsheat exchanger below ground (to dump excess heat and to raise temperature of earth to reduce loss from solar slab). Is this backfilled with earth?
Posted By: Viking HouseThe Solar Slab is used as a buffer! The heat exchanger in the ground is back-filled with earth!
Posted By: spoonandfork Do you have any info on using the walls of a building as an equivalent to the solar slab described above?
Posted By: Viking HouseThe 16-18 degree water pumped through the pipes on non sunny winter days will come from the heat store beneath the house, where excess summer heat is dumped all summer long
Posted By: fostertomBest thing is to input heat at the extg wall/EWI interface
Posted By: spoonandfork So you're able to pull warm water from underneath the ground when you like, so it's not passive like the solar slab?
Posted By: spoonandforkPosted By: fostertomBest thing is to input heat at the extg wall/EWI interface(i assume extg = external)why's that better than lower temperatures closer to the exterior in the wall?
Posted By: spoonandforkgood stuff, can you process it via google docs and try again?
Posted By: spoonandforki assume extg = external
Posted By: spoonandforkwhy's that better than lower temperatures closer to the exterior in the wall?
Posted By: MarkBennettif the heat input layer is put at the interface of the super-structure and external insulation then it will effectively be at the same temperature as the internal air temperature
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