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Application Guide Ag 162002 Variableflow Water Systems Design Installation And Commissioning Guidance Arnold Teekaram

  • SKU: BELL-57775620
Application Guide Ag 162002 Variableflow Water Systems Design Installation And Commissioning Guidance Arnold Teekaram
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Application Guide Ag 162002 Variableflow Water Systems Design Installation And Commissioning Guidance Arnold Teekaram instant download after payment.

Publisher: BSRIA (Building Services Research and Information Association)
File Extension: PDF
File size: 2.18 MB
Pages: 92
Author: Arnold Teekaram, Anu Palmer
ISBN: 9780860226079, 0860226077
Language: English
Year: 2002

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Application Guide Ag 162002 Variableflow Water Systems Design Installation And Commissioning Guidance Arnold Teekaram by Arnold Teekaram, Anu Palmer 9780860226079, 0860226077 instant download after payment.

There are significant benefits to variable speed pumping in terms of both energy cost and capital cost. The main energy savings derive from the pump law relationship which indicates that (for a system with fixed resistance) halving the flow rate would reduce the pump power to roughly one eighth its previous value. This theoretical saving is however unlikely to be achieved on an actual variable flow installation because of the following:

• Changes in the system resistance as valves close

• Reduction in the pump efficiency as the system characteristics change

• Variable speed drive losses.

Capital cost saving opportunities are likely to arise from the potential diversity of load during pipe and pump sizing. Constant flow heating and chilled water systems are generally well understood by designers and commissioning specialists. The commissioning procedure involves setting up systems to achieve fixed flow rate parameters. Most of the valves used for commissioning are manually adjusted during commissioning, and three-port valves are used to modulate flow rate and hence heat transfer across coils.

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