ENERGY EFFICIENCY CONDITION-BASED MAINTENANCE METHODOLOGY FOR COMPUTER ROOM AIR CONDITIONERS

A Computer Room Air Conditioner (CRAC) system has been modeled and simulated to set up a Condition-based maintenance strategy oriented on the equipment's energy efficiency performance (MCEE). The modeling was performed using ASPEN HYSYS based on actual performance conditions of a CRAC system in the Caribbean Colombia area. The condition-based was simulated based on a fouling model increase in the evaporator and condenser, decreasing the heat transfer process and increasing the heat loss. A 2-year fouling increase model was performed to obtain an economic - technical cost-function parameter and develop a cost-effective cleaning schedule for the evaporator and condenser. The results show a 5% COP decrease due to a fouling increase. The maintenance schedule for cleaning this system is cost-effective on the 310th day. Furthermore, a Critical Matrix of the CRAC performance is developed based on energy efficiency and a cost function. Copyright © 2022 by ASME.

• Autores: Fajardo, Juan; Ramírez-León, Hermes; Barreto, Deibys; Rico, Carlos; Cardona, Camilo
• Fecha de publicación: 2022
• Institución: Universidad Tecnológica de Bolívar
• Repositorio: Repositorio Institucional UTB
• Idioma: eng
• OAI Identifier: oai:repositorio.utb.edu.co:20.500.12585/12191
• Acceso en línea: https://hdl.handle.net/20.500.12585/12191
• Palabra clave: Data Center; Economizers; Cooling; LEMB
• Rights: openAccess
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/