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By Graham Brooks. What is HVAC? Heating Ventilating Air Conditioning Cycle: Refrigeration Ductwork in buildings Units on roofs The refrigeration cycle.

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Presentation on theme: "By Graham Brooks. What is HVAC? Heating Ventilating Air Conditioning Cycle: Refrigeration Ductwork in buildings Units on roofs The refrigeration cycle."— Presentation transcript:

1 By Graham Brooks

2 What is HVAC? Heating Ventilating Air Conditioning Cycle: Refrigeration Ductwork in buildings Units on roofs The refrigeration cycle

3 Datacenter HVAC vs. HVAC Unique design problem High electrical loads Specific Conditions -Humidity -Temperature Specialized Equipment Above ceiling ductwork

4 Design Conditions Temperature - Typically between degrees F Prevent equipment overheating Humidity (Relative) - optimal between 40-55% at all times Humidity Low -> Electrostatic Discharge Humidity High -> Affects equipment (moisture)

5 Design Process &Considerations Load calculation -Determines necessary cooling Redundancy -Add backup unit -Uninterruptible power supply Ductwork -Ceiling diffuser(s) -Supply plenum with perforated floor -Cold air hits front of servers; hot air returned Air blowing directly out of unit

6 Closing Servers are critical -Internet -Business use -Commerce Specialized Units -expensive -ex: Liebert Questions? Liebert datacenter air handler

7 Photo Credits telecom.jpg telecom.jpg alogManager/images/Liebert_AP648T-trans-340.gif alogManager/images/Liebert_AP648T-trans-340.gif


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