Armstrong In The Media

Pump Types

Posted by Armstrong Fluid Technology on Nov 7, 2023 4:20:12 PM

A Review of Pump Types for HVAC Systems

Pumps can be grouped according to the method of displacement, the direction of fluid flow, orientation, and control capabilities. Major types of pumps include positive-displacement pumps, centrifugal pumps, and axial flow pumps.

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Topics: Commercial Pumps, Fire Pumps, HVAC System, In The Media, Tango, Vertical, Twin Pumps, Fire Safety, Pumps, Variable Speed Drives

Circulator Basics - Answers To The Most Common Questions

Posted by Steven Lane on Jun 7, 2023 11:48:06 AM

What is the purpose of circulator? What is a circulator pump used for?

In a hydronic heating system, hot water is moved from the heat source (the boiler), through a pipe to a radiator, where the convective qualities of the radiator allow the heat to rise from the hotter radiator to the colder air in the room.

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Topics: In The Media, Circulators, ECM, Variable Speed Drives

Motor & Variable Speed Controller Technology

Posted by Peter Wolff on Jun 20, 2022 10:44:51 AM

As Seen On: June 21, 2022

Over the last 150 years, development of the electric motor has gone in fits and starts. Initially, all electric motors used direct current (DC). But with the advent of alternating current (AC) and amid the “battle of the currents” between industrial development giants George Westinghouse and Thomas Edison, Nikola Tesla unveiled
his induction motor, a new design that converted the power of alternating electrical current into rotational torque.

It was a game changer. As well as helping Westinghouse win the battle of the currents, it was relatively easy to make, efficient and, crucially, needed no slip rings or brushes to transmit electrical current to the shaft. These parts were the Achilles’ heel of the DC and slip-ring type AC motor, requiring regular maintenance to replace them as they wore out.

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Topics: In The Media, Variable Speed Drives, Pump Motors, Electric Motor

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