Method for setting the volumetric flow of heating and/or cooling medium through space heat exchangers of a heating and/or cooling system

Abstract

In a method for setting the volumetric flow of heating and / or cooling medium through space heat exchangers of a heating and / or cooling system, in which the target spread of the feed and return temperatures of the individual space heat exchangers is respectively set by restricting the particular space heat exchanger valve in a manner which can be adjusted and / or fixed, space heat exchangers with different priorities are defined, wherein, starting from a system-specific target spread, a lower target spread is allowed with high-priority space heat exchangers and a higher target spread is ensured with low-priority space heat exchangers. During operation of a high-priority space heat exchanger with a lower spread, the volumetric flow through at least one low-priority space heat exchanger with a higher spread is changed in such a manner that a return temperature which is optimized for the heating device of the heating system is set by mixing the return medium from all space heat exchangers of the heating system.

Description

technical field [0001] The invention relates to a method for regulating the volume flow of a heating and / or cooling medium via a space heat exchanger (Raumwaermetauscher) of a heating or cooling plant, in which the adjustable and / or Alternatively, fixed limits can be used to regulate the target divergence (Zielspreizung) of the process temperature (Vorlauftemperatur) and return temperature (Ruecklauftemperatur) of the individual room heat exchangers. Background technique [0002] Usually such a method is used in order to limit the flow through the individual space heat exchangers which can be adjusted by the user by means of the space heat exchanger valves in the heating installation, so that then, when the valves are fully opened, all the space heat exchangers The heat exchangers are supplied with heating medium such that the same bifurcation (hydraulic balance) occurs at all space heat exchangers. The reason for the different supply of heating medium is that the hydraulic...

AI Technical Summary

Problems solved by technology

However, the particularly low temperatures in the spaces next to the high-temperature spaces lead to heat losses in the high-temperature spaces (especially when the doors are open), so that the space heat exchange must again be operated at a very high heating power in order to maintain the required temperature in these spaces heater, which generally increases the overall return temperature of the system and thus reduces the efficiency of the heating equipment

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