MEBS6008 Environmental Services II

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Fans and Pumps I

1.  Centrifugal Pumps

• Types and operation
• Pump characteristics
• Cavitation and net positive suction

2.  Pump Arrangements

• Pump design criteria and selection
• Pump arrangements and control
• Parallel and series pumping
• Variable speed and distributed pumping

3.  Matching Pumps to Systems

• Design considerations
• Plant loop and building loop
• Chiller plant operation and performance

[Download PowerPoint file]

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Video Presentation:

• How does a Centrifugal pump work ? (4:37) https://www.youtube.com/watch?v=BaEHVpKc-1Q
• http://www.learnengineering.org/2014/01/centrifugal-hydraulic-pumps.html
• Centrifugal Pump Working (5:54) https://www.youtube.com/watch?v=IiE8skW8btE
• http://www.learnengineering.org/2013/03/centrifugal-pump.html
  
• Centrifugal Pumps | Design Aspects (5:32) https://www.youtube.com/watch?v=pWSyrxFJmt4
• http://www.learnengineering.org/2013/03/centrifugal-pumps-design-aspects.html
  
• Critical Pump Selection - Three Major Issues (20:25) https://www.youtube.com/watch?v=qUONRrP-5pc
• Cavitation Causes and Effects (16:08) https://www.youtube.com/watch?v=oRYYP4F8LTU

References:

• ASHRAE, 2012. ASHRAE Systems and Equipment Handbook 2012, SI edition, Chp. 44 - Centrifugal Pumps, American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Atlanta, GA. [ASHRAE catalog via Techstreet]
• EDR, 2009. Chilled Water Plant Design Guide, Energy Design Resources (EDR), California. [website]
  
• Grundfos, The Centrifugal Pump, GRUNDFOS Management A/S, Denmark. [PDF] (available from www.grundfos.com)
  
• Hoffman, R. D., 1995. All About Pumps [electronic resource], Version 2.08, The Animated Software Company, Carlsbad, CA. [AVX 621.602855369 H69]
• Race, G. L. and Mitchell, S., 2003. A Practical Guide to HVAC Building Services Calculations, Building Services Research and Information Association, Bracknell, Berkshire, England, pp. 57-74. [697 R1 p]
• Trane Company, 2001. Chilled-water Systems, Trane Company, La Crosse, Wisconsin. [697.93 A29 T16]
• Wang, S. K., 2001. Handbook of Air Conditioning and Refrigeration, 2nd ed., Chp. 7, McGraw-Hill, New York. [697.93 W24 h][* available in eBook]
• Hegberg, R. A., 1999. Fundamentals of Water System Design, Chp. 4 & 8, American Society of Heating, Refrigerating and Air-Conditioning Engineers Inc., Atlanta, GA. [697 H46]

Web Links:

• Centrifugal pump -- Wikipedia
• Learning about Centrifugal Pumps
• Cavitation -- Wikipedia
• Water hammer -- Wikipedia
• Technical Visit to Water-Cooled Chillers Renovation Project at Mong Kok Witty Commercial Building (06-Jan-2006) [Photos]
• Technical visit to Taikoo Place (18-Mar-2006) [photos]
• Pump Sizing - Introduction [www.bsenotes.com]
• Pump Sizing - Example 1 [www.bsenotes.com]
• Design of chilled water systems and chiller plant:
  
• Chiller Plant Design (McQuay Application Guide AG 31-003) [PDF]
  
• Decoupler systems (Yaskawa) [PDF]
  
• Chilled water system optimization (by David A. Rogers and Harold A. Hougham) [PDF]
• Hartman, T., 2002. All-variable speed chilled water distribution system, AutomatedBuilding.com, April 2002. (http://www.automatedbuildings.com/news/apr02/art/htmn/htmn.htm)
  

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Additional References: (for those who are interested in variable-primary-flow chilled water system)

• Variable primary flow chilled water systems [videorecording, 90 min.], American Standard Inc. and Trane, La Crosse, Wiscosin, 2003. [AV 697.93 V29 A]
• Variable-primary-flow systems revisited, by Mick Schwedler PE, 2002. [Trane Engineers Newsletter][PDF]
• An idea for chilled-water plants whose time has come: Variable-primary-flow systems, by Mick Schwedler PE, 1999. [Trane Engineers Newsletter][PDF]

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| Created: Nov 2004 | Update: 2 Feb 2015 | By: cmhui@hku.hk |