The National Research Council of
Canada's Institute for
Research in Construction is using robots to measure whether forced-air heating
or hydronic radiant heating is more effective for making occupants comfortable.
Researchers are using a special "ventilation and wall research
house" on the institute’s Ottawa campus. Two automated three-dimensional
robotic systems will measure and monitor thermal conditions in five directions.
The robots roam through two rooms, with sensors attached to pivoting booms: One
room is heated by forced air, the other by hydronic radiant heat.
The
evaluation involves comparing vertical air temperature, floor temperatures,
drafts and air velocity. The council will also compare energy savings.
In
the institute’s June 2007 Construction Innovation newsletter, it reports its
believes that radiant systems have the potential to provide more uniform
temperature conditions from floor to ceiling, and therefore provide more
comfort. "Due to the physical properties of water, a hydronic system can
transport a given amount of heating energy using less than 5% of the energy
required by a conventional motor paired with a fan-set. Combined with more
efficient forced-air systems, hydronic systems also have the potential to offer
improved comfort and substantial energy savings," the newsletter
states.
The current experiments will be on-going until the fall.