Energy Audit of an Existing Chiller Plant Followed by Implementation and Measurement of Savings

  • Nouf Alzaabi

Student thesis: Master's Thesis


Energy consumption is the use of energy in a system by the exploitation of resources to meet the demand. The current struggle in supplying energy due to the excessive upsurge in demand is raising concerns in regards to the sustainability of energy use. The Built environment is a major consumer of energy—especially in the UAE where buildings consumes more than 80% of the energy production. This energy use is also a major contributor to climate change. This research focuses on energy conservation in existing buildings through modelling the baseline electricity use and assessing retrofit strategies (energy efficiency measures) as part of the solution. Design Builder software, based on the EnergyPlus engine, was used to model an existing governmental office building. The calibration of the model was achieved by comparing the model to actual building electricity consumption data from the utility meter. We then implemented the most effective retrofit strategies described in the literature. The impact of the retrofits was estimated along with detailed comparison of the results among the competing strategies. Life cycle cost-energy analysis was performed to compute the IRR and payback period for each strategy. The results indicated that remarkable savings of up to 32% in energy cost can be realized by the system when simulated with reasonable IRR. Future work includes the validation of retrofit savings via a measurement & verification campaign
Date of AwardDec 2016
Original languageAmerican English
SupervisorAfshin Afshari (Supervisor)


  • Energy Audit
  • Energy Consumption
  • Energy Conservation
  • Energy Efficiency Measures
  • Design Builder Software
  • Building Energy Consumption
  • Chilled water System
  • Mechanical Cooling Cycle
  • UAE Towards Sustainability
  • Calibration
  • Retrofits Strategies
  • Energy Model.

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