Theoretical model of the operation parameters regulated by the MIMO and SISO system in a cooling chamber

• We model intermediary refrigeration cycle.
• We examine possibility to improve stability of the regulated temperature in cooling chamber.
• MIMO controller and the intermediary circuit can eliminate the periodic changes of the temperature in the cooling chamber.

Smart buildings technologies are more and more common in the refrigeration industry. From definition, smart buildings are the integrated monitoring and controlling systems that govern processes inside the rooms and react immediately on every change inside and outside of the building to minimize exploitation costs and maintain functionality. Smart rooms are functional while ensuring suitable conditions (accurate temperature, humidity and air velocity) for food or medicines temporary storage.The temperature, humidity level and an air velocity are regulated in such a way, to improve quality of food and reduce exploitations costs. Modern methods and technologies enable engineers to design and build up an installation of a cold room with integrated subsystems working accordingly to the data gathered by the sensors to maintain specified functions.The article presents:
• A transient model of the cooling chamber.
• Transient parameters of cooling processes in MIMO and SISO control.
• A refrigeration control system design.