Metode og indretning til regulering af rumtemperaturer, hvor en referencetemperatur i fraluften styrer en differencetrykregulator til tilluften

Method and arrangement for regulating the temperature in a number of rooms which are provided with incoming air from a central incoming-air unit 7 via an incoming-air duct 6, branch lines 5 extending from the duct and adjustable incoming-air devices 3 arranged at the end of these. Outgoing air is removed from the rooms 2 via outgoing-air devices 4, branch lines 8 connected to these, and a collecting duct 9 which interconnects the branch lines, by means of and to an outgoing-air unit 10 with an outgoing-air fan. The desired room temperature is set on room thermostats 31 which act on the incoming-air quantity supplied to the respective room. According to the invention, the differential pressure between one or more rooms and a representative point in the incoming-air duct 6 is established and kept constant by means of a differential pressure regulator 19 at a level which is controlled by the temperature of the outgoing air from one or more rooms or in another place which gives a reference or average value for the temperatures of the rooms.