Method and device for controlling the flow of fluid in an air-conditioning and/or heating system and system using such a device and/or control method

Abstract

A method to control a carrier fluid through a service line () of a conditioning and/or heating system (). The service line includes a heat exchange unit (), a flow regulator (), temperature sensors () detecting a temperature difference (ΔT) between the carrier fluid in a first section () of the service line () upstream of said heat exchange unit () and carrier fluid in a second section () of the service line () downstream of the same heat exchange unit (). The method includes calculating a value assumed by a control parameter (Pc) which is a function of at least one or more values assumed by the temperature difference in the transition of the flow regulator from a first to a second operating condition, for then determining whether the value of the control parameter (Pc) is higher than a threshold (S).