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Energy modelling analysis of Heffron Hall

Karaliolios, E.C.J. (2017) Energy modelling analysis of Heffron Hall.

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Abstract:Background: The refurbishment of the Heffron Hall building in the community hub of East Sydney was found to be incomplete as the installment of insulation in the ground floor was omitted. Due to this lack of insulation and the presence of an underfloor heating system in the ground floor, large energy losses were forecasted by the owners and it was assumed to be non-compliant to Section J of the BCA of NSW. Results: Using a range of models, varying from Design Builder & EnergyPlus models to heat transfer models, the energy consumption of Heffron Hall is estimated. Using a DTS-model and a Proposed Fabric-model, it was obtained that the current construction still complies to Section J. In the energy modelling analysis, the resulting energy losses by the lack of insulation were estimated around 2,823 kWh/year, leading to additional costs of 295 $/year and 0.66 ton/year CO2 emission. To eliminate the additional costs, a solution is proposed consisting of three parts: first, the use of a battery storage system to us the solar PV generated electricity during peak hours to decrease electricity costs. Second, a daylight sensor system for the perimeter lighting to decrease the energy consumption and finally the addition of two solar PV panels to the current rooftop system to decrease the CO2 emissions. In total, the net financial savings are estimated to be 1,414 $/year and the environmental savings are 0.54 ton/year in CO2 emissions. Conclusions: A sustainable solution, consisting of battery storage, perimeter lighting and the addition of two solar PV panels, is created for Heffron Hall to eliminate the negative effects of the energy losses by the lack of insulation. It is recommended to install the whole solution to compensate and improve the sustainability of Heffron Hall. Further research is advisable in the use of domestic PV to reduce peak loads in urban areas.
Item Type:Internship Report (Master)
Blue Green Engineering, Australia
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Sustainable Energy Technology MSc (60443)
Keywords:Australia, battery storage, BIM, Blue Green Engineering, Design Builder, energy efficiency, energy reduction, energy modelling, Energyplus, heat transfer, renewable energy, SET, solar energy, solar PV system
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