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2. Register (air and heating) - Wikipedia

   en.wikipedia.org/wiki/Register_(air_and_heating)

   If not properly installed and tightly connected to the ductwork, air will spill around the register and greatly reduce the HVAC system's efficiency. [5] Ideally, a room will have both heating and cooling registers. In practice, cost considerations usually require that heating and cooling be provided by the same register.

3. Forced-air - Wikipedia

   en.wikipedia.org/wiki/Forced-air

   A forced-air central heating system is one which uses air as its heat transfer medium. These systems rely on ductwork, vents, and plenums as means of air distribution, separate from the actual heating and air conditioning systems. The return plenum carries the air from several large return grills (vents) to a central air handler for re-heating ...

4. Air Movement and Control Association - Wikipedia

   en.wikipedia.org/wiki/Air_Movement_and_Control...

   The following publications provide specifications and guidelines for participants in the Certified Ratings Program. AMCA Publication 11 - Certified Ratings Program Operating Manual contains requirements common to all AMCA International's Certified Ratings Programs. Specific requirements that only pertain to a category of product will be found ...

5. HVAC control system - Wikipedia

   en.wikipedia.org/wiki/HVAC_control_system

   HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system. [1] Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken (e.g. start the ...

6. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. "Refrigeration" is sometimes added to the field's abbreviation as HVAC&R or HVACR, or "ventilation" is dropped, as in HACR (as in the designation of HACR-rated circuit breakers).

7. Duct (flow) - Wikipedia

   en.wikipedia.org/wiki/Duct_(flow)

   Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...

8. Process duct work - Wikipedia

   en.wikipedia.org/wiki/Process_Duct_Work

   The structural design of ductwork plate is based on buckling of the plate element. Round ductwork plate design is based on diameter to duct plate thickness ratios, and the allowable stresses are contained in multiple references such as US Steel Plate, ASME/ANSI STS-1,SMNACA, Tubular Steel Structures, and other references. In actuality round ...

9. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   A central heating system provides warmth to a number of spaces within a building from one main source of heat. It is a component of heating, ventilation, and air conditioning (short: HVAC) systems, which can both cool and warm interior spaces. A central heating system has a furnace that converts fuel or electricity to heat.