Just because phpp accurately tells you that your heat loss through a slab with 14 inches of eps under the slab is very low doesn t mean that using 14 inches of foam is a good use of the earth s resources.
Floor slab heat loss.
I do think concrete floor heat is a great way to go.
This article describes heating and air conditioning ducts that have been placed in or beneath concrete floor slabs.
50 f ground at 4 insulation.
Hvac ductwork in floor slabs.
Away from perimeter i only lose heat to the soil.
The rate of heat loss from a building varies by the temperature differences between the heated and un heated space the colder climate and frozen ground gave more rapid heat transfer colder in building floor temperatures and thus provided an opportunity to test and measure different floor slab and foundation perimeter insulation schemes.
It s possible that phpp accurately models heat loss through slabs.
The r value is calculated from the heat loss from the slab.
Hvac air ducts located inside concrete slab floors invite a surprisingly broad range of building problems that fall into two broad categories.
Learn why radiant heat in your concrete floor may or may not best for you.
The first thing to consider when looking into different types of concrete floors is why it s so important to insulate the floor slab.
Up to 80 of heat loss in a floor slab occurs around the edges.
Concrete floor heating has many advantages over other types of heating systems.
Learn how to do simplified heat loss calculations for basements slab on grade and walkout basement foundations.
He uses an integrated systems design approach to help people create.
Learn how to estimate design heat loss through an insulated floor to a basement below.
Notice the styrofoam going up the edge of the slab to reduce heat loss.
Functional troubles such as lack of air flow or collapsed ductwork and environmental problems such as.
Slab on ground heat loss floor heating summary the main objective of this research is to determine the effect of a low temperature floor heating system on the total heat loss via the slab on ground structures in nordic climate.
If your house is built on a concrete slab and that slab was poured directly on the ground without a barrier or insulation you ve got the ultimate heat sink.
If i didn t have in floor radiant this would not be much 55 f space vs.
This is one step i see left out of a lot of radiant installations.
Both ground temperature and oat are important.
Crawlspaces can be effective in lowering the average heat loss in a house when compared to an uninsulated slab floor as long as vents are well closed in the winter and allowed to breath.
But remember phpp provides absolutely no cost effectiveness feedback.
Near perimeter oat is dominant.
Marc rosenbaum is the director of engineering south mountain company.
The research is based on long term field test measurements of two new row houses in southern finland.
