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| Heating
For Your Business |
Furnaces: How
Does it Work?
The
furnace is the most important component of a central
heating system. It houses all the working parts. So
when you replace the furnace, you replace the vital
operating parts of your heating system. It is by choosing
from among the different models and brands of furnaces
available that you determine the quality and cost of
your business’s heating for years to come.
The furnace is
part of a forced-air system. Warm air is forced, or
blown, through a system of air ducts to each of the
rooms in the office. Office air drawn into the furnace
passes through a filter, where dust and other small
particles are trapped. A blower unit blows the filtered
air through the furnace, and the air absorbs heat.
Gas Heat. If it is a gas furnace, the heat is
supplied by the burning of natural gas. A mixture of
gas and air flows into the burner and is ignited by
the pilot. Combustion occurs, and warm air from the
burner flame rises to fill a chamber known as a heat
exchanger.
The heat exchanger becomes hot. Office air passing around the heat exchanger
absorbs that warmth, continues into the air ducts and the heat is distributed
through the business.
The by-products of combustion pass upward through a venting system and escape
through a vent in the roof.
Electric Heat. If the furnace is electric, heat is
generated by an electric heating element. Electric current
traveling through the element creates heat. By the heat transfer
processes called conduction and convection, heat is transferred
into the air stream and flows through the air ducts into
the rooms of the business.
The Thermostat. Whether you heat your office
with gas or electricity, a wall thermostat will be
installed. This measures room temperature and turns
the central heating system off or on as the temperature
rises or falls to designated levels. Careful location
of the thermostat is an essential consideration in
maintaining maximum comfort levels in your business. |
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