Abstract
The study suggests an automatic temperature control system for more than one industrial air conditioner since industrial equipment is much more complicated than household one and often requires working out individual projects. The mathematical modelling of a water cooler of an industrial air conditioner is based on transfer functions that allow an accurate description of the object of control. This mathematical model reflects the real nature of changes in air parameters and can be used in the development of other temperature control devices. The devised scheme simulates the behaviour of control systems for industrial air conditioners. The scheme of the control system is implemented in the Simulink package, MATLAB. It includes two air conditioners and operates in three modes that are determined by temperature ranges. The research reveals the operational features of the automatic control system for two industrial air conditioners, reflecting the nature of changes in the air temperature and experimental values of the system operation time. The versatile nature of the new system distinguishes it among other automatic control systems and makes it valuable for further research in this area. The possibility of adjustment to air conditioning peculiarities allows creating an improved control system that would resolve the problem and ensure an effective control of air conditioners. The research findings can be used in further individual projects of air conditioning of industrial buildings, which is likely to provide high-quality automatic air temperature control modes.
Highlights
It is difficult to find any modern industrial building or residential apartment without an organized system of air conditioning
The aim of the study is to create a mathematical software for temperature control by industrial air conditioners and devise a scheme that would simulate the behaviour of control systems for industrial air conditioners
The existing control systems that, for example, use fuzzy logic of the controller for unpredictable changes in air conditioning parameters or a fuzzy control system for air conditioning that is based on a PID controller can provide a better control law but can not change the range of constant temperatures by setting an allowable error, which is implemented in the new system as a special block to verify bringing temperature to a constant level
Summary
It is difficult to find any modern industrial building or residential apartment without an organized system of air conditioning. Given that industrial buildings may be of large sizes, it is necessary to equip each of them with two or more air conditioners. The study focuses on creating a control system for more than one air conditioner. The topic is relevant since brands such as Daikin, Panasonic and Мitsubishi Еlectric are interested in resolving the problem of air conditioning in buildings of any shape and size. Air conditioning is mainly improved via increasing the number of air conditioners and installing additional auxiliary appliances. The technology of air conditioning can be improved and developed via creating automatic control systems for more than one industrial air conditioning unit or separate blocks of air conditioning systems
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