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Heating, Ventilating, and Air-Conditioning. TABLE OF CONTENTS Types of Systems Central Forced Air System –Air Handling Unit Hot Water System Zoned Control.

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Presentation on theme: "Heating, Ventilating, and Air-Conditioning. TABLE OF CONTENTS Types of Systems Central Forced Air System –Air Handling Unit Hot Water System Zoned Control."— Presentation transcript:

1 Heating, Ventilating, and Air-Conditioning

2 TABLE OF CONTENTS Types of Systems Central Forced Air System –Air Handling Unit Hot Water System Zoned Control System Radiant Heat Heat Pump HVAC Plans

3 Types of Systems Central Forced-Air Systems Hot Water Systems Zone Control Systems Radiant Heat

4 Central Forced Air System Most Common HVAC System Circulates air through or around heating and cooling devices. A fan forces air into ducts Supply ducts transport conditioned air into building through diffusers or supply registers Air is routed back to heating/cooling device through return ducts

5 Air Handling Unit (AHU) Device used to condition and circulate air as part of an HVAC system Large metal box containing a blower, heating or cooling elements, filter, and sound attenuators Connects to ductwork that distributes the conditioned air through the building and returns it to the AHU Courtesy Eric Fisher

6 Air Handling Unit (AHU) May need to supply heating, cooling, or both A furnace generates heat –Fuel oil or natural gas –Electric heating elements –Heat pump A refrigeration system absorbs heat –Air conditioner –Heat pump

7 Air Handling Unit (AHU) Smaller air handlers may contain a fuel-burning heater or a refrigeration evaporator placed directly in the air stream Large commercial air handling units contain coils that circulate water –Boiler provides hot water or steam –Chiller provides chilled water ©iStockphoto.com

8 Wikimedia 1. Supply duct 2. Fan compartment 3. Flexible connection 4. Heating and/or cooling coil 5. Filter compartment 6. Return and fresh air duct Typical AHU components: Air Handling Unit (AHU)

9 Hot Water System Water heated in boiler and circulated through pipes to radiators Requires plumbing rather than ductwork ©iStockphoto.com

10 Zone Control System One heater and one thermostat per room No ductwork Often used in hotel rooms

11 Radiant Heat Supply heat directly to the floor, wall, or ceiling Hot water pipes or electric heating element runs through building component Dependent on radiant heat –Heat transferred from hot surface to people and objects Wikimedia

12 Heat Pump (HP) A machine or device that moves heat from one location (the source) to another location (the mechanical work) Can produce heating or cooling by reversing the direction of heat flow Can be used in: –Forced Air System –Hot Water System –Radiant Heat System wikimedia

13 HVAC Plans Image Courtesy Novus Architects

14 HVAC (Mechanical) Plans Image Courtesy Novus Architects

15 HVAC Mechanical Plans Image Courtesy Novus Architects

16 TABLE OF CONTENTS Types of Systems Central Forced Air System –Air Handling Unit Hot Water System Zoned Control System Radiant Heat Heat Pump HVAC Plans

17 en.wikimedia.org. Images retrieved Dec. 8, Novus Architecture (formerly SGM Architects), Mt. Pleasant, SC Images retrieved Dec. 8, Image Sources

18 Heating, Ventilating, and Air-Conditioning


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