SBEC technologiesThermoactive floor


Thermo active floor

A radiant floor deck reduces the need to heat water to high temperatures by utilising the floor area as the radiator. Instead of the usual 70°C water temperature needed for conventional radiator systems, the floor deck is hydronically fed with supply temperatures of 30 to 35°C, thereby operating at the most efficient phase of heat pumps. The room is heated evenly from floor level.

Underfloor heating influences the radiant exchange by thermally conditioning the interior surfaces with low temperature long wave radiation. The heating of the surfaces suppresses body heat loss resulting in a perception of heating comfort. This general sensation of comfort is further enhanced through conduction (feet on floor) and through convection by the surface's influence on air density.

Application on SBEC building

The radiant pre-finished steel floor deck has been installed in a first floor office. Cold or hot water can be circulated through the pipes and stored in the floor, to provide heating or cooling depending on the time of year.  The water in the pipes will be heated by an energy efficient heat pump primed by one of the transpired solar collectors. The floor deck is connected to the building management system that will manage the supply of heat from either one of these sources- using renewable solar heated air from the transpired solar collector on a sunny day and the energy efficient heat pump on a very dull day or at night time.

Additionally, this floor can be chilled by circulating cold water through the embedded pipes. In this mode the floor acts as a thermal sink absorbing thermal gains during the day and storing the captured heat so that it can be purged during night-time.

Retrofit under floor heating system

This system works by using a lightweight floor system with overlaid pipes running through insulation to provide heating or cooling. This is a retrofit overlay system.

A lightweight floor reduces the need to heat water to high temperatures by utilising the floor area as the radiator. This enables the heat pump to operate in the most efficient phase of its operating range. The floor is fed by supply temperatures of 30 to 35°C, reducing the heating load and increasing the level of occupant comfort as the room is heated evenly from floor level.

Application on SBEC building

The lightweight dry construction flooring in a second floor office has been overlaid with this system. Cold or hot water can be circulated through the pipes to provide a rapid heating and cooling system in the absence of significant thermal mass as a comparison against alternate methods. The water in the pipes will be heated by an energy efficient heat pump primed by one of the transpired solar collectors.





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