pumps - MEBS6008 Environmental Services II...

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MEBS6008 Environmental Services II http://www.hku.hk/bse/MEBS6008/ Fans and Pumps I Dr. Sam C M Hui epartment of Mechanical Engineering Department of Mechanical Engineering The University of Hong Kong - ail: cmhui@hku hk E mail: cmhui@hku.hk Sep 2010
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Contents entrifugal Pumps Centrifugal Pumps Pump Arrangements atching Pumps to Systems Matching Pumps to Systems
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Centrifugal Pumps Centrifugal pump gp p Most widely used in HVAC applications, e .g. ot water systems Hot water systems Chilled water systems Condenser water systems Boiler feed and condensate return pumps Operation Electric motor’s output torque => impeller’s rotation Coupling to the pump shaft Centrifugal force & tip speed force
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(Source: Fundamentals of Water System Design ) Chilled water pumping system
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(Source: Fundamentals of Water System Design ) Cooling tower pumping system
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Pump motor Centrifugal pump body ump Shaft Pump Shaft A double-suction, horizontal split-case, single-stage centrifugal pump (Source: Wang, S. K., 2001. Handbook of Air Conditioning and Refrigeration )
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(Source: ASHRAE HVAC Systems and Equipment Handbook 2004 ) Typical overhung-impeller end-suction pump
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(Source: Fundamentals of Water System Design ) Centrifugal pump, impeller and volute
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(Source: Fundamentals of Water System Design ) Impeller action on fluid
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(Source: Fundamentals of Water System Design ) Flow pattern of impeller/volute action
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Centrifugal Pumps ypes of centrifugal pumps Types of centrifugal pumps Circulator pump Closed-couple end suction pump rame- ounted end suction pump Frame mounted end suction pump Base-mounted horizontal split case pump Vertical inline pump ertical turbine single or multistage pump Vertical turbine single or multistage pump
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(Source: Fundamentals of Water System Design ) Circulation pump
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(Source: Fundamentals of Water System Design ) Close-coupled end suction pump
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(Source: Fundamentals of Water System Design ) Frame-mounted end suction pump
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(Source: Fundamentals of Water System Design ) Base-mounted horizontal split case pump
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(Source: Fundamentals of Water System Design ) Vertical inline pump
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(Source: Fundamentals of Water System Design ) Vertical turbine pump, wet sump arrangement
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