The nexus among employment opportunities, life-cycle costs, and carbon emissions: a case study of sustainable building maintenance in Hong Kong

2015 ◽  
Vol 109 ◽  
pp. 326-335 ◽  
Author(s):  
Yat Hung Chiang ◽  
Jing Li ◽  
Lu Zhou ◽  
Francis K.W. Wong ◽  
Patrick T.I. Lam
Keyword(s):  
Hong Kong ◽  
Life Cycle ◽  
Carbon Emissions ◽  
Life Cycle Costs ◽  
Employment Opportunities ◽  
Sustainable Building ◽  
Building Maintenance

scholarly journals Incorporating an Asset Health Index into a Life Cycle Costing: A Proposition and Study Case

Mathematics ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1787
Author(s):  
Orlando Durán ◽  
Fabián Orellana ◽  
Pablo Perez ◽  
Tamara Hidalgo
Keyword(s):  
Life Cycle ◽  
Life Cycle Costing ◽  
Life Cycle Costs ◽  
Health Index ◽  
Central Chile ◽  
Proposal A ◽  
Sensitivity Studies ◽  
Useful Life ◽  
Physical Assets

A physical asset’s health is the consequence of a series of factors, ranging from the characteristics of the location where it operates to the care it is submitted to. These characteristics can influence the durability or the horizon of the useful life of any equipment, as well as determine its operational performance and its failure rates in the future. Therefore, the assessment of the influence of asset health on Life Cycle Costs is a compelling need. This paper proposes the incorporation of a factor that reflects the projected behavior of an asset’s health index into its corresponding Life Cycle Costing (LCC) model. This allows cost estimates to be made more realistic and LCC models to be operated more accurately. As a way of validating this proposal, a case study is shown. The methodology proposed in this case study was applied in a real case, considering an LNG facility located in central Chile. In addition, sensitivity studies and comparisons with the results obtained by a traditional Life Cycle Costing model are included. The results show the usefulness of incorporating asset health aspects into the Life Cycle Costing of physical assets.

Hong Kong Metro's Traction Equipment: The Drive for Efficiency

1992 ◽  
Vol 206 (1) ◽  
pp. 67-74
Author(s):  
A D Moyes
Keyword(s):  
Energy Efficiency ◽  
Hong Kong ◽  
Life Cycle ◽  
Energy Saving ◽  
Mass Transit ◽  
Life Cycle Costs ◽  
Design Features ◽  
Different Types ◽  
Multiple Unit ◽  
Traction Equipment

This paper describes the evolution of the electric multiple unit traction equipment of the Hong Kong Mass Transit Railway Corporation (MTRC). Traction energy efficiency is particularly important to the MTRC and has been improved by 46 per cent on the most recently supplied cars. The justification for the conversion of the existing camshaft cars to chopper control and the relative merits of different types of drives in MTRC's application are discussed. The utilization of energy, the method used to optimize coasting for energy saving, life-cycle costs and the design features of the gate turn-off thyristor chopper cars are described.

scholarly journals Comparing Three Building Life Cycle Assessment Tools for the Canadian Construction Industry

2021 ◽  
Author(s):  
Hayley Cormick
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Construction Industry ◽  
Carbon Emissions ◽  
Black Box ◽  
Assessment Tools ◽  
Life Cycle Assessments ◽  
Bill Of Materials ◽  
Building Life Cycle

This research aims to contribute to quantifying whole building life cycle assessment using various software tools to determine how they can aid the construction industry in reducing carbon emissions, and in particular embodied emissions, through analysis and reporting. The conducted research seeks to examine and compare three whole building life cycle assessment tools; Athena Impact Estimator, Tally and One-Click LCA to relate the input variability to the outputs of the three programs. The three whole building life-cycle assessments were conducted using a case study building with an identical bill of materials and compared to determine the applicability and strengths of one program over another. The research confirmed that the three programs output significantly different results given the variability in scope, allowable program inputs and generated “black-box” back-end calculations, where the outputted whole building life cycle carbon equivalents of One-Click LCA is less than half than of Tally meaning the programs outputs cannot be simply compared side-by-side.

scholarly journals Low-carbon design for product packaging: a case study on wineglass

2020 ◽  
Author(s):  
Feng Xu ◽  
Jiao-Jing Pan
Keyword(s):  
Material Processing ◽  
Life Cycle ◽  
Carbon Emissions ◽  
Raw Material ◽  
Low Carbon ◽  
Product Packaging ◽  
Packaging Industry ◽  
The Difference ◽  
Packaging Structure

Abstract The study on carbon emissions in packaging industry is a very important but easily overlooked field. In order to explore carbon emissions of the packaging life cycle, the wineglass is used as the packaging object to discuss the difference between carbon emissions and costs caused by two new packaging structures and a common packaging structure on the market. The measurement boundary includes raw material collection, raw material processing, packaging manufacturing, transportation and end of life. It was found that reasonable packaging structure instead the buffer function of expanded polyethylene can effectively reduce the carbon emissions and costs.

scholarly journals Prediction of Life Cycle Carbon Emissions of Sponge City Projects: A Case Study in Shanghai, China

2018 ◽  
Vol 10 (11) ◽  
pp. 3978 ◽  
Author(s):  
Xiaohu Lin ◽  
Jie Ren ◽  
Jingcheng Xu ◽  
Tao Zheng ◽  
Wei Cheng ◽  
...  
Keyword(s):  
Life Cycle ◽  
Carbon Emissions ◽  
Carbon Emission ◽  
Carbon Sink ◽  
Carbon Sinks ◽  
Sponge City ◽  
Study Results ◽  
Accounting Model ◽  
Whole Life Cycle

In recent years, China has been vigorously carrying out the planning and implementation of Sponge City. Since the implementation of Sponge City projects involves substantial materials and energy consumption, it is significant to account corresponding carbon emissions and sinks. The existed studies about carbon emission of stormwater management measures, however, are not able to take the whole life cycle and different facilities into consideration. Therefore, this study develops a comprehensive accounting model based on Intergovernmental Panel on Climate Change (IPCC) guidelines and life cycle assessment (LCA) method to predict carbon emissions and carbon sinks of Sponge City projects more comprehensively and accurately. The model is applied to an actual residential community in Shanghai as a case study. Results show that the total indirect carbon emission is estimated to be 774,277 kg CO2 eq during a 30-year lifespan, among which carbon emissions from operation and maintenance phases are 2570 kg CO2 eq/year and 7309 kg CO2 eq/year, respectively, both directly proportional to the service life of the facilities. Three kinds of achievable carbon sinks are carbon sequestration in green space (5450 kg CO2 eq/year), carbon sink from rainwater utilization (15,379 kg CO2 eq/year) and carbon sink from runoff pollutant removal (19,552 kg CO2 eq/year). Carbon neutrality is expected to be reached after approximately 19 years. The established carbon emission accounting model can contribute to better planning and construction of Sponge City in China and enhance further energy conservation and carbon emission reduction.

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