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Abstract
Now a days air-conditioning has major energy consumption of commercial buildings. This system consuming almost 55% to 60% of total building energy load. This study presents how we can optimize the HVAC energy consumption of an IT building in Delhi region. The study has shown that in-spite of the cooling load variation, chillers are running continues without any feedback of cooling load ,the analysis shows that variation on AHU’s with the use of VFD as per heating load inside the building direct impact on AHU’s load and optimize the chiller preformation throughout the year. The analysis also shown that system efficiency improved by 10% to 11 % . It has been shown that building automation system will be helpful to conserve significant energy.