Avaliação de funcionalidade e análise de eficiência de chillers

Abstract

This work analyzes the functionalities and the efficiency of the "chillers" that make up the Shopping air conditioning system. The use of air conditioning devices in closed environments is expected and charged in several establishments such as banks, supermarkets, schools, universities and mainly, in shopping malls. They are places visited by a large number of people daily. The machines indicated for acclimatizing large environments are "chillers". These equipments exist in several models and have the function of transforming mechanical energy into thermal energy. First, a comparison will be made of the performance of the “chillers” of their project values with the values acquired during a period of 18 months. The second stage consists of studying the methods of saving electricity consumption; use a certain number of chillers during the cold production process, place them at a capacity less than 100% and load the tank at a value less than its maximum capacity. With the calculation of the cooling capacity that was estimated using data collected in the field, it is possible to determine its performance coefficient (COP), which is the most common way of specifying the energy efficiency of a “Chiller”. Through the results obtained from this work, it is possible to draw conclusions about the strategies implemented. These results allow us to determine the most advantageous capacity for the operation of the shopping center and also which tank loading, complete or partial, which is more favorable as well as knowing whether the number of “chillers” triggered greatly influences the efficiency of the system.