Air conditioning controller and method for controlling an air conditioning system

Abstract

The invention relates to a controller for controlling a first air conditioning system and a second air conditioning system having separate refrigerant circuits but arranged for conditioning a common space. The controller includes a multivariable regulator for determining the operation of the first component for controlling the first refrigerant circuit and the second refrigerant circuit to jointly and simultaneously reduce the difference between the set point and the measured value of the environment in the common space. The control signal for the environmental error between. The controller also includes at least two single variable regulators for receiving operational errors between set and measured values ​​of operation of the first refrigerant circuit and the second component of the second refrigerant circuit. The controllers respectively determine control signals for controlling operations of different refrigerant circuits and reducing operation errors. The controller also includes a look-up table that stores values ​​for other inputs to the system that improve its performance, and the controller selects specific input values ​​for both systems based on the output of the multivariable regulator and / or the single variable regulator . The controller includes an electric circuit for controlling the first air conditioning system and the second air conditioning system according to the determined control signal.

Description

technical field [0001] The present invention relates generally to air conditioning systems, and more particularly, to simultaneous control of the operation of multiple air conditioning systems. Background technique [0002] The comfort, health and safety of occupants in contemporary buildings depends on a variety of factors, such as the influence of space temperature, space humidity and fresh air ventilation rate and factors such as carbon dioxide (CO 2 ) or the accumulation of relevant pollutants such as volatile organic compounds (VOCs). Many different combinations of air conditioning systems are installed in modern buildings to meet this set of requirements. Unfortunately, many difficulties often arise when using different combinations of heating, cooling and ventilation systems to condition the same space. [0003] An example of such a combination of multiple space conditioning systems is a Dedicated Outdoor Air System (DOAS) to meet the latent heat load imposed by fre...

AI Technical Summary

Problems solved by technology

This control strategy makes it difficult to operate equipment in a reliable and energy-efficient manner

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