The Art of Variable- Speed Pumping to a (delta-) T

Vastyan, John
September 2010
Heating/Piping/Air Conditioning Engineering;Sep2010, Vol. 82 Issue 9, p38
The article offers tips on variable-speed hydronic circulation and the explores the best applications and key benefits of variable-speed pumping. It includes a discussion of a sample project with an applicable convection-heat-transfer equation, a pump-control concept which concerns pressure differential (delta-P), and the reduced delta-T's effect on a system. It also mentions that the system's actual operating point is where the system curve crosses the pump curve.


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