Author: Lo, Wai Chung
Title: A technical feasibility analysis on the optimization of demand side management of a hybrid net-zero energy office building in Hong Kong integrated with net-zero energy electric cars
Advisors: Cao, Sunliang (BSE)
Degree: M.Eng.
Year: 2019
Subject: Hong Kong Polytechnic University -- Dissertations
Sustainable buildings
Electric automobiles
Sustainable development
Energy storage
Department: Department of Building Services Engineering
Pages: xi, 82 pages : color illustrations
Language: English
Abstract: The growing trend of constructing net-zero energy building and using electric vehicles in the world makes it interesting to investigate the possibility of integrating both of them into a hybrid system. This research presented a technical feasibility analysis on the integration between net-zero energy with net-zero energy electric vehicles with on-site renewable energy generation system and energy storage system. Using TRNSYS program as the simulation tool, a comprehensive hybrid integrated system with control logics and working principles is established under Hong Kong climate circumstance in an annual basis. In the beginning stage of the study, some demand side management strategies are implemented to check the impact of the strategies on the load of the building. Afterwards, various parametric analyses are carried out to see the influence of the size of the renewable energy system and the energy storage system on the energy performance, net-zero energy balance and matching capability of the designed building. Several indices proposed by other researchers are used in this study to evaluate the above factors, including the annual net primary energy consumption, annual net equivalent CO2 emissions, on-site energy matching factor etc. These indicators are applied in this study, and results show that under the configuration of 473.399 m2 rooftop photovoltaics panels with 220 kW wind turbine, plus 63 batteries with 400 kWh each and 24 electric vehicles, the aim of a net-zero site energy system, a net-zero source energy system as well as a net-zero energy emissions system can be successfully achieved. Moreover, the impact of the number of electric vehicles on the excess energy generated by the renewable system is discussed. Also, the matching properties of different seasons throughout a year are studied. Demand side management strategies are effective to mitigate the mismatch characteristics. Therefore, the results prove that in Hong Kong condition, it is technically feasible to construct such a system with the above parameters and configurations.
Rights: All rights reserved
Access: restricted access

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