HVAC and BEMS

In HVAC, a thin, reflective foil sheet that exhibits low radiant energy transmission and under certain conditions can block radiant heat transfer; installed in attics to reduce heat flow through a roof assembly into the living space.

Ceiling panels that contain electric resistance heating elements embedded within them to provide radiant heat to a room.

Energy that transmits away from its source in all directions.

A type of radiant heating system where the building floor contains channels or tubes through which hot fluids such as air or water are circulated.  The whole floor is evenly heated.  Thus, the room heats from the bottom up.  Radiant floor heating eliminates the draft and dust problems associated with forced air heating systems.

Radiant heat transfer occurs when there is a large difference between the temperatures of two (2) surfaces that are exposed to each other but are not touching.

HVAC term for a heating system where heat is supplied (radiated) into a room by means of heated surfaces, such as electric resistance elements, hot water (hydronic) radiators, etc.

A room heat delivery (or exchanger) component of a hydronic (hot water or steam) heating system; hot water or steam is delivered to it by natural convection or by pump from a boiler.

A device that releases pressure within a radiator when the pressure inside exceeds the operating limits of the vent.

Situation that occurs when the air being exhausted from a building is immediately brought back into the system through the air intake and other openings in the building envelope.

Air removed from the conditioned space and used for ventilation, heating, cooling, humidification, or dehumidification.