Flow control module and method for controlling flow in circulation system

Abstract

The present disclosure relates to a flow control module that controls one or more pumps in a circulation system. The circulation system includes: a primary side having a first port fluidly connected to an output of a source element, a second port fluidly connected to an input of the source element, and a controllable primary side flow actuator providing a primary side flow; a secondary side havinga third port fluidly connected to the input of the load element, a fourth port fluidly connected to the output of the load element, and a controllable secondary side flow actuator providing a secondary side flow; and an intermediate transfer element fluidly connected with the first to fourth ports between the primary side and the secondary side. In a first case, the flow control module calibratesa measured value of a first temperature difference between a temperature at a first port and a temperature at a third port when a primary side flow exceeds a secondary side flow; in a second case, ameasurement of a second temperature difference between the temperature at the fourth port and the temperature at the second port is calibrated when the secondary side flow rate exceeds the primary side flow rate.

Description

technical field [0001] The present disclosure relates to a flow control module and a method for controlling flow in a hydronic system, particularly in a heating, ventilation and air conditioning (HVAC) system of a building. Background technique [0002] Typically, a circulatory system is designed to operate at a design temperature differential (ΔT) between a primary loop (loop) that includes thermal power sources such as heaters, refrigeration, and a secondary loop. Heat exchangers, heat exchangers and / or utility couplings, the secondary loop includes thermal power consuming loads such as radiators and / or air handling units (AHU). It is well known that the circulatory system can suffer from an undesired effect known as "low ΔT syndrome". For a number of reasons, such as dirty chiller coils, or system components that were not designed for the same temperature differential, the actual temperature differential may drop below the design temperature differential, resulting in a ...

AI Technical Summary

Problems solved by technology

It is well known that the circulatory system can suffer from an undesired effect known as "low ΔT syndrome"

For a number of reasons, such as dirty chiller coils, or system components that were not designed for the same temperature differential, the actual temperature differential may drop below the design temperature differential, resulting in a less energy efficient cycle system. low operation

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