Sustainable TermoBuild Principles

The effects of using the heat storage capacity of hollow core slabs varies between summer and winter conditions. Surplus heat, generated from body heat, lighting, computers, sun radiation, etc, can be stored in the slabs increasing their temperature by 3 to 6 Deg. F during the day without affecting the comfort of the occupants. In the summer this excess heat is dissipated from the slabs by cooling the slabs with cool night air in temperate climates, or using conventional chillers, but with up to a 50% reduction in capacity when compared to conventional technologies, in hot climates.

During the winter, in cold climates we retain the heat stored in the slabs overnight, to maintain comfortable internal conditions for the occupants the next day. In some hot climates just using the cool night air, without the need for chillers, can cool the structure to provide comfortable conditions by the following morning.

Cooling Season

With Night Pre Cooling

Using concrete floor as thermal energy storage leads to Dynamic Demand Response (DDR) and seamless shifting of prime time peak electricity to off-peak hours.

During occupied hours, heat from internal loads is absorbed by the concrete slab through radiation. Ventilation air is routed through the slab, absorbing heat or being cooled, depending on the temperature of the slab.

During unoccupied hours, cool nighttime air, when available, is circulated through the slab to remove heat and pre-cooling the slab for the following day.

After a night cooling cycle, when stored energy in the thermal mass of the slab is sufficient to handle the space cooling load, the building will operate in a natural ventilation mode or supplementary cooling with operable windows.

Heating Season

During occupied hours, heat from internal loads is transferred to the hollow core slabs through radiation. The heat is either transferred to the supply air or stored in the slab.

During unoccupied hours, if the hollow core slab cools down below the setpoint, the air handling system is started in full re-circulated mode providing warm air to raise the slab temperature and heat the space. No one can deny the power of thermal storage. Contact Termobuild Green Team and ask how best to integrate your building structure with mechanical systems of your choice.