Weighted Return Temperature Limitation
AssigneeSiemens Schweiz AG
InventorsKarl-Heinz Petry, Kuno Marbach
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Abstract
Various embodiments of the present disclosure optimize energy usage of an HVAC system. For example, some embodiments include a method comprising: generating a flow through a heat exchanger; determining a return temperature of fluid having passed through heat exchanger; determining a current flow of the fluid through the heat exchanger; and controlling the flow of the fluid based on a comparison of the determined return temperature with a threshold temperature, wherein the threshold temperature is dependent on the current flow.
Claims14
Method for operating a HVAC system, the method comprising:
- (a) generating a flow of a fluid through a thermal energy exchange system of the HVAC system resulting in an exchange of thermal energy between a primary side of the thermal energy exchange system and a secondary side of the thermal energy exchange system;
- (b) determining a return temperature of fluid having passed through thermal energy exchange system;
- (c) determining a current flow of the fluid through the thermal energy exchange system;
- and
- (d) controlling the flow of the fluid based on a comparison of the determined return temperature with a threshold temperature, wherein the threshold temperature is dependent on the current flow.
A control system for controlling a flow of a fluid through a thermal energy exchange system, the control system comprising:
- an interface to receive a temperature signal comprising a return temperature of fluid having passed through the thermal energy exchange system and a signal comprising a current flow of fluid through the thermal energy exchange system;
- and
- a processing system to determine a threshold temperature dependent on the current flow, and control a flow device to adjust the flow of a fluid through the thermal energy exchange system based on a comparison of the determined return temperature with the threshold temperature.
Dependencies are inferred from the claim text.