Wilo Se

Wilo Ag

Stephan Schmied

Xavier Pottier

Edgar Große Westhoff

Thorsten Kettner

Felix GLÜCK

Frank Albers

The invention relates to a method for controlling at least one first circulation pump () of a heating or cooling system () having a primary circuit () and a secondary circuit () coupled therewith at a transfer point (). The first circulation pump (') conveys a heating or cooling medium in the primary circuit (), and in the second secondary circuit (), at least one second circulation pump () is located that conveys a heating or cooling medium in at least one partial area of the secondary circuit (). The volume flow rate (formula I) of the first circulation pump (&#x2032;) is controlled in functional dependence on the volume flow rate (formula II) of the secondary circuit () behind the transfer point (). In this way, a demand based, and thus an energy-efficient control of the primary-side circulation pump is achieved. The invention further relates to a pump system, comprising the at least one first and the at least one second circulation pump for carrying out the method.

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Dortmund, Germany

Stephan Schmied