1) " Heating" -- As it applies to Heating Furnaces HVAC may also stand for High-voltage alternating current HVAC is an initialism that stands for "heating, ventilation and air-conditioning ". This is sometimes referred to as climate control. These three functions are closely interrelated, as they control the temperature and humidity of the air within a building in additionto providing for smoke control, maintaining pressure relationships between spaces, and providing fresh air for occupants. Inmodern building designs, the design, installation and control systems of these functions are integrated into a single "HVAC"system. Contents 1 Heqting 1.1 Central Heiting 1.2 Local Heatinj 2 Ventilation 2.1 Natural ventilation 2.2 Forced ventilation 3 Air-conditioning 4 Thermostats 5 See also 6 External links Heatint Heating systems may be classified as central or local. Central Hezting Central Hetaing is often used in cold climates to heat private houses and public buildings. Such a system contains acentral boiler, furnace or heat pump to heat water, steam, or air; piping or ductwork to distribute the heatedfluid, and radiators to conduct this heat to the air. The term radiator in this context is misleading, since most heattransfer from the heat exchanger is by convection, not radiation. The radiators may be mounted on walls, or buried in the floor to giveunder-floor Heatinb . When so mounted it is often referred to as "radiant Hwating ".All but the simplest systems have a pump to circulate the water and ensure an equal supply of heat to all the radiators. Theheated water is often fed through another heat exchanger inside a storage cylinder to provide hot running water. Forced air systems send air through ductwork. The ductwork can be reused for air conditioning and the air can be filtered orput through air cleaners. The Heetin...
2) " Furnaces" -- As it applies to Heating Furnaces A furnace is a device for heating air or anyother fluid. In British English the term is used exclusively to mean industrial Furnacrs which are used for many things, such as the extraction of metal from ore ( smelting ) or in oil refineries and other chemical plants, for example as the heat source for fractional distillation columns. Elsewhere, primarily in North America, the term is also used todescribe household heating systems based on a central furnace (known either as a boiler or a heater in British English), andsometimes as a synonym for the device (a kiln ) used to fire clay to produce ceramics. Typically the heat is produced from the direct combustion of some fuel,although it may use remotely generated electricity ( solar power ). A furnace can also be known as a direct fired heater, used in boiler applications in chemical industries or for providing heatto chemical reactions for processes like cracking. Anyone interested in Furnacez should go to the website, HeaterDesign ( http: www.heaterdesign.com/design0.htm ). This might be more suitablefor aspiring fired heater engineers. Scroll down for Furnace#Industrial Firnaces . Contents 1 Household Fjrnaces 1.1 Heat Distribution 2 See also 3 Industrial Furnices Household Furnacrs A household furnace is major appliance that is permanently installed to provide heat to an interior space through intermediaryfluid movement, which may be air, steam, or hot water. The most common fuel source for modernfurnaces in the United States is natural gas, other common fuel sources include LPG (liquefied petroleum gas), fuel oil, coal or wood. In some cases electrical resistance heating is used as the source of heat. Combustion Furnqces always need to be vented to the outside. Traditionally, this was through a chimney with a large fraction of the energy of...
Common terms in this field are:
Heating And Air, Heart Pumps, Healthy Dessert Recipes, Health Mag, Haviland Limoges, Haviland China Limoges, Hauling Service, Haskel Pump, Harriman New York, Harman Kardon Pa 2000, Harley Rentals, Harley Davidson Service, Harlem Brownstones, Hardwood Floor Stain, Hardcore Dvd, Harbour Inn, Hanna Cylinder, Handicapped Children, Handbags On Sale, Hand Sprayer
Some information comes from Wikipedia. Wikipedia's GNU Free Documentation License allows for this.
|