Circulators - Articles - Page 4 | Plumbing & Mechanical

The Glitch and Fix: Mixed mode

February 26, 2020

I recently had an inquiry from a designer who needed to combine some high temperature loads with low temperature loads.

John Siegenthaler: New in the neighborhood

John Siegenthaler, P.E.

December 5, 2019

This was quite a year for me on the home front. On fairly short notice, my wife and I found out that our daughter Heidi and her husband Andy would be building a house about 500 feet down the road from us.

Taco Comfort Solutions high efficiency circulator

November 11, 2019

The 0018e high-efficiency, Bluetooth-enabled circulator brings a new level of control to residential and light commercial hydronic systems.

ECM circulator myth-busting

Make the smart decision the first time.

John M. Barba

September 10, 2019

That prophetic little quote from “The Man Who Shot Liberty Valance” pretty much sums up where our industry is today with residential ECM circulators. So many myths, many of them downright crazy, make it nearly impossible to make clear-headed and smart decisions for your customers.

Armstrong introduces ECM Pump-Less-Volute Repair solution with energy-efficient permanent magnet motor

July 15, 2019

The new ECM Pump-Less-Volute uses a permanent magnet motor that is up to 40% more efficient than a standard induction motor.

John Siegenthaler: A synergistic system

True professionals look for synergistic opportunities when designing hydronic systems.

John Siegenthaler, P.E.

April 8, 2019

One of the “delights” of designing hydronic systems is looking for synergistic opportunities, where one device provides multiple functions or benefits that would otherwise require two or more separate devices.

New standard would mandate ECMs in circulators

The Circulator Pumps Negotiated Rulemaking Working Group submitted its negotiated standard to the DOE in late 2016.

Jen Anesi-Brombach

January 15, 2018

The DOE ruling is delayed indefinitely, but new energy efficiency labeling is already in the works.

John Siegenthaler: Renewable Heating Design

Flow rate, heat output and Delta-T

John Siegenthaler, P.E.

September 28, 2017

Some things don’t vary proportionally.

Properly sizing and operating circulators

Reducing head loss reduces the kWh of electrical energy required to operate them.

John Siegenthaler, P.E.

July 21, 2017

When designing hydronic circuits, most of us focus on what’s necessary for that circuit to absorb thermal energy at a heat source, carry it along like a conveyor belt and release that energy at one or more heat emitters.