According to Dalhoff, the on-board intelligence of VFDs and ECMs has improved to the point that system engineers and pump manufacturers can optimally meet the needs of either control scheme required: delta-T or delta-P. Delta-T. John Barba, one of Taco’s variable-speed experts, is a proponent of pump or circulator application based on delta-T, the difference between supply and return temperatures. For variable-speed circulators, delta-T relates directly to the amount of British ...

Register For Free or Sign In to Access

"Variable-Speed Pumping" is FREE to access as a registered user on HPAC.com. Why register for HPAC.com? It's simple and free, and provides:

  • Access to exclusive articles and news coverage
  • The full version of all monthly digital editions dating back to 2010
  • Allows you to comment on articles and discuss news with HPAC's editors
  • Gain valuable media content and more!

Already registered? here.