Definition of Convection

Convection

convection is the transfer of heat in fluid or air, caused by the movement of the heated air or fluid itself. In a building space, warm air rises and cold air settles to create a convection loop and is termed free convection. convection can also be caused mechanically by a fan and is termed forced convection.

Air Space

The area between insulation facing and interior of exterior wall coverings. Normally a 1" air gap.

Building Code

A comprehensive set of laws that controls the construction or remodeling of a home or other structure.

Central Air Conditioning

A system which uses ducts to distribute cooling and/or dehumidified air to more than one room or uses pipes to distribute chilled water to heat exchangers in more than one room, and which is not plugged into an electrical convenience outlet.

Closed Loop

A system in which each component is connected to the next component with the last component being connected to the original device. Forms a complete circle.

Crawlspace Foundation

The space between the ground and the first floor of a home, usually no higher than four feet.

Crawlspace Vent

An opening to allow the passage of air through the unexcavated area under a first floor. Ideally there should be at least two vents per crawlspace.

Forced Air Heating

A common form of heating with natural gas, propane, oil or electricity as a fuel. air is heated in the furnace and distributed through a set of metal ducts to various areas of the house.

Heat Pump

A device which uses compression and decompression of gas to heat and/or cool a house.

Radiant Heat

A heating system which uses hot water, steam pipes or electric resistance coils to heat the floors, walls or the ceilings of a room.

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