|
|
|
Sort Order |
|
|
|
Items / Page
|
|
|
|
|
|
|
| Srl | Item |
| 1 |
ID:
121365
|
|
|
|
|
| Publication |
2013.
|
| Summary/Abstract |
Industrial parks have become the effective strategies for government to promote sustainable economic development due to the following advantages: shared infrastructure and concentrated industrial activities within planned areas. However, due to intensive energy consumption and dependence on fossil fuels, industrial parks have become the main areas for greenhouse gas emissions. Therefore, it is critical to quantify their carbon footprints so that appropriate emission reduction policies can be raised. The objective of this paper is to seek an appropriate method on evaluating the carbon footprint of one industrial park. The tiered hybrid LCA method was selected due to its advantages over other methods. Shenyang Economic and Technological Development Zone (SETDZ), a typical comprehensive industrial park in China, was chosen as a case study park. The results show that the total life cycle carbon footprint of SETDZ was 15.29 Mt, including 6.81 Mt onsite (direct) carbon footprint, 8.47 Mt upstream carbon footprint, and only 3201 t downstream carbon footprint. Analysis from industrial sector perspectives shows that chemical industry and manufacture of general purpose machinery and special purposes machinery sector were the two largest sectors for life cycle carbon footprint. Such a sector analysis may be useful for investigation of appropriate emission reduction policies.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 2 |
ID:
111415
|
|
|
|
|
| Publication |
2012.
|
| Summary/Abstract |
The growing concerns of global warming and climate change have forced water providers to scrutinize the energy for water production and the greenhouse gas (GHG) emissions associated with it. A system dynamics model is developed to estimate the energy requirements to move water from the water source to the distribution laterals of the Las Vegas Valley and to analyze the carbon footprint associated with it. The results show that at present nearly 0.85 million megawatt hours per year (MWh/y) energy is required for conveyance of water in distribution laterals of the Valley from Lake Mead resulting in approximately 0.53 million metric tons of CO2 emissions per year. Considering the current mix of fuel source, the energy and CO2 emissions will increase to 1.34 million MWh/y and 0.84 million metric tons per year, respectively, by the year 2035. Various scenarios including change in population growth rate, water conservation, increase in water reuse, change in the Lake level, change in fuel sources, change in emission rates, and combination of multiple scenarios are analyzed to study their impact on energy requirements and associated CO2 emissions.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 3 |
ID:
149998
|
|
|
|
|
| Summary/Abstract |
Based on the national greenhouse gas emission reduction target for 2030 (“GHG target for 2030″) and the 2nd Energy Master Plan (“2nd EMP”), several power mix configuration scenarios were tested to estimate the sensitivity of the carbon dioxide emissions and the ‘overshoot ratio’, which is the ratio of ecological footprint to biocapacity. It would be only possible to achieve the GHG target for 2030 if the fraction of non-emission energy be more than 70% of the total input primary energy for power generation with the current conversion efficiency (40%). Even the conversion efficiency is changed to 50%, still the carbon dioxide emissions are larger than the targeted carbon dioxide emissions from the energy sector. The overshoot ratio would still increase from 5.9 in 2009 to 7.6 in 2035 even with the successful implementation of the 2nd EMP. Thus, additional efforts to reduce the carbon dioxide emissions and the overshoot ratio from the energy sector are required beyond adjusting the supply mix configuration for power generation and the conversion efficiency. Policies and programs encouraging the changes in consumer behavior toward reduction of goods consumption and energy savings are expected to impact on reducing the carbon dioxide emissions and the overshoot ratio.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 4 |
ID:
125551
|
|
|
|
|
| Publication |
2013.
|
| Summary/Abstract |
Climate change is the issue of the century and, according to Agenda 21, local actions are essential to impact global mitigation of greenhouse gases (GHG) emissions ("think globally, act locally"). However, in order to plan and implement effective, sustainable actions, local authorities need detailed information on their GHG emissions and their sources. This paper presents the work that led to the development of a GIS-based tool for local GHG accounting, which provides data for local decision-makers in an innovative manner different from traditional GHG inventories. The original aspects of the study are the geo-referencing of all results and the possibility of calculating all emissions (carbon sources) and removals (carbon sinks) with input data of different accuracy.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 5 |
ID:
096728
|
|
|
|
|
| Publication |
2010.
|
| Summary/Abstract |
Analysis of lower carbon power systems has tended to focus on the operational carbon dioxide (CO2) emissions from power stations. However, to achieve the large cuts required it is necessary to understand the whole-life contribution of all sectors of the electricity industry. Here, a preliminary assessment of the life cycle carbon emissions of the transmission network in Great Britain is presented. Using a 40-year period and assuming a static generation mix it shows that the carbon equivalent emissions (or global warming potential) of the transmission network are around 11 gCO2-eq/kWh of electricity transmitted and that almost 19 times more energy is transmitted by the network than is used in its construction and operation. Operational emissions account for 96% of this with transmission losses alone totalling 85% and sulphur hexafluoride (SF6) emissions featuring significantly. However, the CO2 embodied within the raw materials of the network infrastructure itself represents a modest 3%. Transmission investment decisions informed by whole-life cycle carbon assessments of network design could balance higher financial and carbon 'capital' costs of larger conductors with lower transmission losses and CO2 emissions over the network lifetime. This will, however, necessitate new regulatory approaches to properly incentivise transmission companies.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 6 |
ID:
097528
|
|
|
|
|
| Publication |
2010.
|
| Summary/Abstract |
Analysis of lower carbon power systems has tended to focus on the operational carbon dioxide (CO2) emissions from power stations. However, to achieve the large cuts required it is necessary to understand the whole-life contribution of all sectors of the electricity industry. Here, a preliminary assessment of the life cycle carbon emissions of the transmission network in Great Britain is presented. Using a 40-year period and assuming a static generation mix it shows that the carbon equivalent emissions (or global warming potential) of the transmission network are around 11 gCO2-eq/kWh of electricity transmitted and that almost 19 times more energy is transmitted by the network than is used in its construction and operation. Operational emissions account for 96% of this with transmission losses alone totalling 85% and sulphur hexafluoride (SF6) emissions featuring significantly. However, the CO2 embodied within the raw materials of the network infrastructure itself represents a modest 3%. Transmission investment decisions informed by whole-life cycle carbon assessments of network design could balance higher financial and carbon 'capital' costs of larger conductors with lower transmission losses and CO2 emissions over the network lifetime. This will, however, necessitate new regulatory approaches to properly incentivise transmission companies.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 7 |
ID:
125847
|
|
|
|
|
| Publication |
2013.
|
| Summary/Abstract |
Like cities, many large national parks in the United States often include "urban" visitor and residential areas that mostly demand (rather than produce) energy and key urban materials. The U.S. National Park Service has committed to quantifying and reducing scopes 1 and 2 emissions by 35% and scope 3 emissions by 10% by 2020 for all parks. Current inventories however do not provide the specificity or granularity to evaluate solutions that address fundamental inefficiencies in these inventories. By quantifying and comparing the importance of different inventory sectors as well as upstream and downstream emissions in Yosemite National Park (YNP), this carbon footprint provides a case study and potential template for quantifying future emissions reductions, and for evaluating tradeoffs between them. Results indicate that visitor-related emissions comprise the largest fraction of the Yosemite carbon footprint, and that increases in annual visitation (3.43-3.90 million) coincide with and likely drive interannual increases in the magnitude of Yosemite's extended inventory (126,000-130,000 t CO2e). Given this, it is recommended that "per visitor" efficiency be used as a metric to track progress. In this respect, YNP has annually decreased kilograms of GHG emissions per visitor from 36.58 (2008) to 32.90 (2011). We discuss opportunities for reducing this measure further.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 8 |
ID:
162965
|
|
|
|
|
| Summary/Abstract |
Non-renewable technologies still play a significant role in the electricity generation mix of most countries. Thus, relevant up-to-date environmental data are needed to provide a good understanding of the environmental consequences of the fossil fuel electricity generation technologies. The focus of this work is to examine the fossil-based electricity generation technologies used in Ecuador, providing a compelling insight into the revision of existent international databases. The main combinations of fossil fuel and thermal generation technologies have been studied: fuel oil in steam power plants (FO-SP), fuel oil in internal combustion engine power plants (FO-ICE), natural gas in gas turbine power plants (NG-GT), and diesel in gas turbine power plants (D-GT). ISO standards and CML 2000 methodology were further considered to quantify the potential environmental impact associated with the systems. Results show that NG-GT has the lowest environmental burdens, while FO-SP represents the highest impacts in 5 of the 6 studied impact categories. It is remarkable that for the same type of fuel (fuel oil), the ICE power plants have a lower environmental impact than FO-SP plants. Finally, lights and shadows of fossil-based electricity are discussed to provide a general picture of the current debate concerning transition pathways.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 9 |
ID:
125740
|
|
|
|
|
| Publication |
2013.
|
| Summary/Abstract |
Malaysia envisages becoming a developed nation by 2020. To sustain industrial expansion and attract investments Malaysia must introduce new energy strategies. These strategies should also moderate carbon footprint. The new energy strategies introduced by the government are (i) installation of nuclear power plant by 2021, (ii) import of Sarawak hydropower from 2015 and (iii) enhancement of use of renewable energy from 2015. In this paper we analyze the cost and resulting carbon footprint of energy expansion for 12 energy scenes (inclusive of new strategies) to produce electricity for Peninsular Malaysia for the period 2009-2030. We use a computer model MESSAGE to provide optimization. The best strategy is for the following accumulated percentage of energy resource in the fuel mix: 49.3% (natural gas), 28.4% (coal), 4.06% (nuclear), 2.98% (hydropower), 4.45% (renewable), 10.82% (import hydropower). The minimum cost of expanding this strategy from 2009 until 2030 is USD6.090B. The CO2 emission index of this strategy is 0.329 t/MWh. The accumulated carbon dioxide emission for this period is 1825.96 Mton CO2 eq.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 10 |
ID:
098254
|
|
|
|
|
| Publication |
2010.
|
| Summary/Abstract |
A dearth of available data on carbon emissions and comparative analysis between metropolitan areas make it difficult to confirm or refute best practices and policies. To help provide benchmarks and expand our understanding of urban centers and climate change, this article offers a preliminary comparison of the carbon footprints of 12 metropolitan areas. It does this by examining emissions related to vehicles, energy used in buildings, industry, agriculture, and waste. The carbon emissions from these sources-discussed here as the metro area's partial carbon footprint-provide a foundation for identifying the pricing, land use, help metropolitan areas throughout the world respond to climate change. The article begins by exploring a sample of the existing literature on urban morphology and climate change and explaining the methodology used to calculate each area's carbon footprint. The article then depicts the specific carbon footprints for Beijing, Jakarta, London, Los Angeles, Manila, Mexico City, New Delhi, New York, São Paulo, Seoul, Singapore, and Tokyo and compares these to respective national averages. It concludes by offering suggestions for how city planners and policymakers can reduce the carbon footprint of these and possibly other large urban areas.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 11 |
ID:
098550
|
|
|
|
|
| Publication |
2010.
|
| Summary/Abstract |
A dearth of available data on carbon emissions and comparative analysis between metropolitan areas make it difficult to confirm or refute best practices and policies. To help provide benchmarks and expand our understanding of urban centers and climate change, this article offers a preliminary comparison of the carbon footprints of 12 metropolitan areas. It does this by examining emissions related to vehicles, energy used in buildings, industry, agriculture, and waste. The carbon emissions from these sources-discussed here as the metro area's partial carbon footprint-provide a foundation for identifying the pricing, land use, help metropolitan areas throughout the world respond to climate change. The article begins by exploring a sample of the existing literature on urban morphology and climate change and explaining the methodology used to calculate each area's carbon footprint. The article then depicts the specific carbon footprints for Beijing, Jakarta, London, Los Angeles, Manila, Mexico City, New Delhi, New York, São Paulo, Seoul, Singapore, and Tokyo and compares these to respective national averages. It concludes by offering suggestions for how city planners and policymakers can reduce the carbon footprint of these and possibly other large urban areas.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 12 |
ID:
122730
|
|
|
|
|
| Publication |
2013.
|
| Summary/Abstract |
For more holistic inventory estimation, this paper uses a hybrid approach to access the carbon footprint of Xiamen City in 2009. Besides carbon emissions from the end-use sector activities (called Scope 1+2 by WRI/WBCSD) in normal research, carbon emissions from the cross-boundary traffic and the embodied energy of key urban imported materials (namely Scope 3) were also included. The results are as follow: (1) Carbon emissions within Scope 1+2 only take up 66.14% of total carbon footprint, while emissions within Scope 3 which have usually been ignored account for 33.84%. (2) Industry is the most carbon-intensive end use sector which contributes 32.74% of the total carbon footprint and 55.13% of energy use emissions in Scope 1+2. (3) The per capita carbon footprint of Xiamen is just about one-third of that in Denver. (4) Comparing with Denver, the proportion of embodied emissions in Xiamen was 10.60% higher than Denver. Overall, Xiamen is relatively a low-carbon city with characters of industrial carbon-intensive and high embodied emissions. Further analysis indicates that the urbanization and industrialization in Xiamen might cause more material consumption and industrial emissions. These highlight the importance of management for Scope 3 emissions in the developing cities.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|