Floor Radiant Cooling System

Radiant cooling slabs use similar design and sizing principles as a hydronic radiant floor system using the same types of pex pipes manifolds and pumps as in heating.

Floor radiant cooling system.

While this makes sense in some cases delivering cooling from the ceiling has several advantages. Under optimal design conditions capacities of a floor system up to 16 btu h ft can be achieved with more typical capacities in the 8 to 12 btu h ft range. The house will be well insulated and well sealed walls insulated to r 30 the roof insulated to r 60 and airtightness at 1 5 ach50. A radiant floor cooling system will not solve humidity issues but installing a large or whole house dehumidifier can do this job very easily at about the cost of an ac.

But mackay writes that he is building in climate zone 6a where humidity ranges between 20 and 35. Aprilaire makes a complete line of whole home dehumidifiers for under 1000 usd. Chilled water between 55f to 58f is circulated through the pipes which are embedded in either floor or ceiling. Homes built on concrete slabs are prime candidates for radiant heating systems and radiant floor cooling takes advantage of the same principle using chilled water.

The capacity of a radiant cooling system depends on factors such as insulation pipe spacing floor construction and indoor air temperatures. Radiant cooling from a slab can be delivered to a space from the floor or ceiling.