• ENE-PS-8
  • 泵浦系統
  • 操作與維護-常態性保養,如果非計畫性的維修過多,則須檢查:氣蝕現象、磨損、泵浦機型錯誤
  • Excessive pump maintenance can indicate:
    ●pumps are cavitating
    ●badly worn pumps
    ●pumps that are not suitable for the operation.
    ●Pumps throttled at a constant head and flow indicate excess capacity. The pressure drop across a control valve represents wasted energy, which is proportional to the pressure drop and flow.
    A noisy pump generally indicates cavitation from heavy throttling or excess flow. Noisy control valves or bypass valves usually mean a high pressure drop with a correspondingly high energy loss.
    Pump performance and efficiency deteriorates over time. Pump capacity and efficiency are reduced as internal leakage increases due to excessive clearances between worn p ump components: backplate; impeller; throat bushings; rings; sleeve bearings. A monitoring test can detect this condition and help size a smaller impeller, either new, or by machining the initial one, t o achieve a huge reduction in energy. Internal clearances should be restored if performance changes significantly.
    Applying coatings to the pump, will reduce friction losses.


  • None reported.

  • The applicability of particular measures, and the extent of cost savings depend upon the size and specific nature of the installation and system. Only an assessment of a system and the installation needs can determine which measures provide the correct cost-benefit. This could be done by a qualified pumping system service provider or by qualified in-house engineering staff.
    The assessment conclusions will identify the measures that are applicable to a system, and will include an estimate of the savings, the cost of the measure, as well as the payback time.


  • Pumping systems often have a lifespan of 15 to 20 years, so a consideration of lifetime costs against initial (purchase) costs are important.
    Pumps are typically purchased as individual components, although they provide a service only when operating as part of the system, so a consideration of the system is important to enable a proper assessment of the cost-benefit.


  • Energy Efficiency (2009) 3.8.4