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ID:
168326
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| Summary/Abstract |
Building energy regulation, as part of an energy policy, is launched for governing energy-efficient building design with an ultimate goal to attain mitigation of climate change. In most of the current building energy regulations, there is no requirement for assessing the environmental effectiveness of the energy-efficient measures involved. Building professionals cannot ensure that the energy saving can offset the extra embodied energy consumed for compliance with a design regulation. This study investigates the environmental effectiveness of regulatory requirement on energy-efficient building design. A Code of Practice for Overall Thermal Transfer Value in Buildings implemented in Hong Kong was used as a case study. Through a survey and energy simulations, it revealed that implementation of this mandatory building design regulation in Hong Kong is successful in terms of both saving in building operating energy and recovering in embodied energy of the extra building materials used. Policy makers are advised to consider incorporating an assessment phase into the development of building energy regulation to examine the environmental effectiveness of regulatory requirement on energy-efficient building design. It is envisaged that the methodology developed in this study can be applied to other cities for evaluating the environmental effectiveness of implementing a building energy regulation.
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| 2 |
ID:
191181
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| Summary/Abstract |
Shifting from fossil fuel propelled vehicle to electrified transport becomes a growing trend and forms part of an energy and transportation policy in many modern cities. Due to improper design, management and operation, many mass transit companies are operating under a tough financial condition. This paper analyzes and discusses the strategy and policy for successful transition from fossil fuel dominant transportation to an electrified mass transit railway system, taking Hong Kong as a study case. The Hong Kong Mass Transit Railway (MTR) system has 98 stations along 10 domestic rail lines of 266.3 km route length, with an average daily passenger number of 4.189 million in this highly dense city with a population of 7.413 million. The Hong Kong MTR system shares 48% of the franchised transport boarding with the expense of only 4.9% of the annual energy consumption in the entire transport sector. In addition to the renowned business model: Rail plus Property model which has been quoted in many literatures, this study analyzes and discusses the design, operation, management, feeder bus service, and the government's policy and strategies on fossil fuel driven vehicle control. Moreover, suggestion on enhancing the existing contingency plan of the MTR operation is proposed.
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