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Variable Speed Pump Motors and Drives

RL Deppmann February 12, 2024Hydronic System Design, Selection and Specification, Curves, Efficiency, Speed, Affinity Laws, Affinity Laws, Monday Morning Minutes, Pumps

  Danfoss VFD Motor Efficiency Terms Bell & Gossett ECM Pump   Variable speed centrifugal pumps in building heating, cooling, and plumbing systems use a …

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variable speed pump motorsVariable Speed Drivehydronic system designaffinity laws
heat or cool variable flow system chart
heat or cool variable flow system chart

Developing Variable Speed Pump Curves

RL Deppmann February 5, 2024Selection and Specification, Curves, Efficiency, Speed, Affinity Laws, Monday Morning Minutes, Affinity Laws, Pumps, Hydronic System Design

Most heating and cooling pumps in commercial buildings operate in a variable speed mode. Today, we take your Monday Morning Minutes to explore the variable …

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pumpspump curvesvariable speedaffinity lawsselection and specificationhydronic system design
American Flag
American Flag

The Department of Energy (DOE) Pump Standards – Now is the Time to Choose

Norm Hall October 21, 2019Pumps, U.S. DOE Standards, Selection and Specification, Codes and Standards, Efficiency, Monday Morning Minutes

The Department of Energy (DOE) pump standards goes into effect on January 27, 2020. This affects projects you are sending out to bid right now! …

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How to Use the Part Load Efficiency Value
How to Use the Part Load Efficiency Value

Bell and Gossett Part Load Efficiency Value Part 2: How to use PLEV

RL Deppmann June 27, 2016U.S. DOE Standards, Selection and Specification, Codes and Standards, Efficiency, Pump Efficiency, Monday Morning Minutes, Pumps

In the last Monday Morning Minutes post, we introduced the PLEV, or Part Load Efficiency Value from Bell and Gossett. This week we look at some …

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DOEdepartment of energystandardsBell and GossettUS DOEpumps
Pump
Pump

Bell and Gossett Part Load Efficiency Value

RL Deppmann June 20, 2016Selection and Specification, Codes and Standards, Efficiency, Pump Efficiency, Monday Morning Minutes, Pumps, U.S. DOE Standards

The last three Monday Morning Minutes have introduced the U.S. Department of Energy 2020 pump standards. The Standard looks at efficiency of pumps equally at …

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DOEPart Load Efficiency Valuecodes and standardsBell and Gossettpumps
Curve for MMM 06-06-200px
Curve for MMM 06-06-200px

New Pump Efficiency Standards Part 3: Calculating PER Values

RL Deppmann June 13, 2016Efficiency, Pump Efficiency, Monday Morning Minutes, Pumps, U.S. DOE Standards, Selection and Specification, Codes and Standards

Under the DOE’s new efficiency standards for pumps, all Pump Efficiency Rating (PER) values use a full size or maximum impeller for a given pump …

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DOEpump standardsPER Valuespump efficiency
RLD Pump Efficiency Standard
RLD Pump Efficiency Standard

New Pump Efficiency Standard Part 2: The Pump Energy Index (PEI)

RL Deppmann June 6, 2016Monday Morning Minutes, Pumps, U.S. DOE Standards, Selection and Specification, Codes and Standards, Efficiency, Pump Efficiency

Now that the U.S. Department of Energy (DOE) has published the first ever Energy Conservation Standards for Pumps, let’s take a look at some of …

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department of energypump efficiencyUS DOEpumpspeidoe standardsDOE
RLD Pump Efficiency Standard
RLD Pump Efficiency Standard

New Pump Efficiency Standards Part 1: They’re Here, Now What?

RL Deppmann May 30, 2016Monday Morning Minutes, Pumps, U.S. DOE Standards, Selection and Specification, Codes and Standards, Efficiency, Pump Efficiency

Heat pumps have them. Air conditioners have them. Even light bulbs have them. And now, for the first time in history, clean water pumps have …

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department of energypump efficiencypumpsNew pump efficiency standardsDOE

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  • Products
    • Overview
    • Pumps and Accessories
    • Boilers and Water Heaters
      • Water Heater Stock
      • Boiler Stock
    • Hydronic Systems
    • Plumbing Systems
    • Steam and Condensate
    • Variable Frequency Drives (VFDs)
    • Glycol Solutions
    • Snowmelt Designs
  • System Design
    • Overview
    • Project Gallery
    • Selection and Design Tools
  • Water Solutions
  • Contractors
  • Service & Parts
    • Overview
    • Startup and Warranty
    • Parts
    • Service and Maintenance
  • Education
    • Overview
    • Basic Hydronic Blog Articles
    • Training Opportunities
    • Factory Classes
  • About RLD
    • Overview
    • Team Deppmann
    • R.L. Deppmann Locations
    • Careers
    • Community Engagement
    • Press and News