Danfoss A/s

Niels Gregersen

Bjarne Frederiksen

Arne Markvart

Joergen Seerup

Lars Munch

Gaia Balzarini

Peter Gammeljord Nielsen

Martin Manscher

Arne Børge Larsen

A method is provided for adjusting several parallel connected heat exchangers supplied with a coolant medium. The aim of the invention is to simplify the adjustment. For this purpose, the method consists in a) determining a specific value of heat requirement for each heat exchanger in a predetermined time period; b) comparing the specific values of all heat exchangers therebetween and c) in modifying the adjustment of the heat exchanger having the lowest specific value of heat requirement in such a way that the heat requirement thereof is increased.

Method for adjusting several parallel connected heat exchangers

A valve arrangement is provided, () comprising: a valve () for controlling a flow of heating or cooling fluid through a heat exchanger, an actuator () for actuating said valve (), control means () for controlling said actuator (), a first temperature sensor () connected to said control means (), a thermal resistance between the first temperature sensor () and the valve () being greater than a thermal resistance between the second temperature sensor () and the valve (). It is intended to improve control of the valve. To this end the first temperature sensor () and the second temperature sensor () are part of detector means detecting a closing condition of the valve ().

Valve arrangement and method for operating a valve

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Galten, Denmark

Niels Gregersen