How much energy savings, if any can be derived from replacing a 40 hp 1200 rpm motor with a VFD motor-this is to run a hydraulic pump-system pressure is 2000 PSI and most of the time only about 15-18 gpm makeup fluid is needed. The original system keeps the 1200 rpm constant and loads/unloads the pumps on demand(45 gallons of accumulators, fixed displacement pumps, piggyback arrangement, amp draw is about 23 amps when the 5 gpm pump is loaded and about 50 amps when both the 5 and 35 gpm pumps load). The proposed new pump would require approx. 500-600 rpm to produce the needed 15-18 gpm of makeup fluid. I'm having a little trouble seeing any savings as the load remains the same-only the pump control method and the rpm change. Thanks for any direction, advice, Maytag
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
More and more manufacturers are getting into the Industrial Internet of things (IIoT). Those that succeed early in the IIoT arena can be leaders in their market, or solidify their position. Download Now