Comparative analysis of energy performance between VRF and conventional chillers air to water systems in a commercial building Systems

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Orabi Sawalmeh
Mahmoud Abdel-latif
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Air conditioning systems use the most electricity in West Bank, and with a limited and expansive supply of energy available, energy conservation is essential. In this study, two air conditioning systems were discussed: the Variable Refrigerant Flow (VRF) system and the Air to Water Chiller system, in order to determine which system was the most feasible alternative. Hardee's Restaurant (HR) was chosen as the case study. Initially, the cooling load for HR was determined to be 124 kw Based on accurate architecture, energy usage and economic analyses were conducted for the two systems. The specification of an air conditioning system involves choosing system components such as indoor units, outdoor units, tubing, and pumps depending on the cooling load and building configuration. Actual price was determined based on component quotes from production and procurement firms. The economic analysis was focused on determining the current value of all air conditioning systems. The current value of the VRF method was discovered to be $50828, although it was equivalent to $60608 For use of the Chiller machine. The VRF scheme has a lower negative value, indicating that it is more practical and can save more resources and electricity.