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Parallel Curve - Featured
Parallel Curve - Featured

Parallel Pumping in Condenser Applications (Part 1)

RL Deppmann August 1, 2016Hydronic System Design, Selection and Specification, Cooling Towers, Piping and Pumps, Cooling, Parallel Pumping, Monday Morning Minutes, Parallel Pumping, Pumps, Pumps

Applying a single constant-speed pump for each condenser in a chilled water application is a normal design for the HVAC engineer. The chiller manufacturers suggest …

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Parallel Pumpinghydronic system designpumps
Control Curve of 30% of Design Head and Variable Speed
Control Curve of 30% of Design Head and Variable Speed

Bell & Gossett Part Load Efficiency Value Part 4: End-of-Curve Selections

RL Deppmann July 18, 2016Pumps, Selection and Specification, Curves, Operation, End of Curve, Monday Morning Minutes

When looking at Bell and Gossett pump selections, we often find higher part load efficiency (PLEV) pump choices are to the right of the BEP, or best …

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

Bell & Gossett Part Load Efficiency Value Part 3: HVAC Pump Selection

RL Deppmann July 11, 2016Motors, Pumps, Selection and Specification, Selection and Specification, Speed, Speed, Monday Morning Minutes

In the last two Monday Morning Minutes, we introduced the PLEV, or Part Load Efficiency Value, from Bell and Gossett. When we use part load …

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Motorspumpspump selection
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, 2016Pumps, U.S. DOE Standards, Selection and Specification, Codes and Standards, Efficiency, Pump Efficiency, Monday Morning Minutes

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

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
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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DOEdepartment of energypump efficiencyUS DOEpumpspeidoe standards
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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DOEdepartment of energypump efficiencypumpsNew pump efficiency standards
Pressure Booster Project
Pressure Booster Project

The Day Hunter’s Curve Didn’t Look Safe: A Pressure Booster Story

Norm Hall November 30, 2015Pressure Boosters, Monday Morning Minutes, Pumps, Pressure Boosters, Plumbing System Design

The R. L. Deppmann Startup and Warranty Team team receives a lot of interesting calls about systems that aren’t working properly.  In this case, our …

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pressure boosterspumpsplumbing
Water Removed From System - Hydropneumatic Tanks for Variable-Speed Pressure Boosters
Water Removed From System - Hydropneumatic Tanks for Variable-Speed Pressure Boosters

Hydropneumatic Tanks for Variable-Speed Pressure Boosters, Part 3

Norm Hall November 9, 2015Pressure Boosters, Tanks, Tanks, Monday Morning Minutes, Pumps, Tanks, Pressure Boosters, Hydropneumatic Plumbing, Plumbing System Design

In the last RLD Monday Morning Minute I described the pre-pressurized tank sizing for constant-speed booster systems. There are those who say, “My pressure booster system is …

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pressure boostersTankspumps
Selections that satisfy both accepatnce and tank volume
Selections that satisfy both accepatnce and tank volume

Hydropneumatic Tanks for Variable-Speed Pressure Boosters, Part 2

Norm Hall November 2, 2015Tanks, Monday Morning Minutes, Pumps, Tanks, Pressure Boosters, Hydropneumatic Plumbing, Plumbing System Design, Pressure Boosters, Tanks

In last week’s RLD Monday Morning Minute, I described a brief history of pressure-boosting systems and the introduction of the pre-pressurized tank. This week we continue …

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pressure boostersTanksHydropneumaticpumps
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  • Products
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      • Water Heater Stock
      • Boiler Stock
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    • Glycol Solutions
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