Adaptive control method for refrigeration systems

• Main Authors: González Sánchez, Miguel Angel, Maldonado Jimenez, Jose Miguel, Cabeza Fabra, Luisa Fernanda, Albets Chico, Xavier, de Gracia Cuesta, Alvaro, Moreno Argiles, Pere, Zsembinszki, Gabriel
• Format: Patent
• Language: English
• Published: 27.07.2021
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; COLD ROOMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS; HEAT PUMP SYSTEMS; HEATING; ICE-BOXES; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; RANGES; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; REFRIGERATORS; VENTILATING; WEAPONS

Provided is a method for adaptive control of a refrigeration system, the method including calculating a Number of Transfer Units (NTU) rate or an indicator representing the ease of variation of temperature (FVT) of an evaporator of the refrigeration system, to detect a frost level in the evaporator, to define the most suitable defrosting time, the energization of the drainage resistors and the adaptive management of the evaporator fan combining different operating modes, including an ice-free mode that uses only the cooling capacity of the refrigerant, and different modes with ice, which take advantage of the latent heat stored in the ice to save energy, depending on the frost level in the evaporator.