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Preliminary Study of Energy and GHG Footprint of CFRP Recycling Method using Korea Database
Pruitichaiwiboon Phirada(프티차이위본 피라다),Lee Cheul-Kyu(이철규),Kim Young-Ki(김용기) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월
Awareness of resource conservation and pollution prevention has been continually increasing. The proven benefits from CFRP's unique combination of light weight and high strength compare to conventional material is well suited for minimizing fuel consumption during vehicle in particular rail operation. Responding the awareness, this work intends to study CFRP's recycling method that is not only technical performance but also environmental view point. According to prior work of technical performance test, this work aims at quantifying the footprint of energy and GHG derived from the two appreciated performance of pyrolysis and acids recycling methods. The streamline LCA is the concept for systematic assessment. The boundary is scoped at the recycling activity, consequently, the data in and out from the specific target activity are obtained under the gate to gate data collection. Its function is recovery carbon fiber. To count and compare function, functional unit is set at 60% of recycling rate. Korea database is mainly source for acquiring the footprint of both. The numerical results presented that the energy footprint of acids and pyrolysis is 164.95 and 1,199.88 MJ-eq., respectively. Meantime, the GHG footprint of is 1,196.22 and 5,916.08 g CO2 eq. for acids and pyrolysis. In summary, the acids recycling method is, in regarding the environmental performance, better than pyrolysis recycling method.
A Study on Eco-Efficiency for Recycling Method of CFRP
Pruitichaiwiboon Phirada(프티차이위본 피라다),Kim Young-Ki(김용기),Lee Cheul-Kyu(이철규),Kim Cho-Young(김초영) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
Eco-efficiecy, in general term, means creating more value of product with less impact to environment. It is expressed by the ratio of economic value created and environmental burden that relevance in a specific management. Is this article, the waste management of CFRP at the end of life stage through the two recycling methods is studied. The scope of work is at recycling system, so the value of economy and environmental performance are evaluated only the activities involved the system. The economic value derives from the cost of materials and utilities consumption, called operating cost, while the revenue comes from the sale of recovered carbon fiber and credit avoid landfill. Because the energy dependence and global warming are increasing concern, it is selected as th environmental factor for this study. The functional unit of comparison is 102 g of CFRP flow into the system. The main material and utility used for nitric acid method are nitric solution and electricity. There is only electricity used for processing the pyrolysis method. Eco-effiency through global warming impact of pyrolysis in atmosphere and nitric acid are 0.99 and 26.04 respectively. Meantime, eco-efficiency using cumulative energy of pyrolysis and nitric acid are 24.06 and 12578.97 respectively. So, the results of this study indicate that pyrolysis recycling method is more environmental friendly due to its eco-efficiency indicator is lower than nitric acid recycling method.
Embodied Energy and CO2 Emissions Evaluation for Freight Transport
프티차이위본 피라다(Pruitichaiwiboon Phirada),이철규(Lee Cheul-Kyu),김용기(Kim Young-Ki) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
This study aim at demonstrating the environmental performance of freight transport of the rail and road mode through an indicator of embodied energy and CO2 emissions. Using the concept of LCA the scope of evaluation includes energy production supply chain activity and operation. The results of embodied energy and CO2 emissions are normalized by means of traffic volume. The results shown that embodied CO2 emissions road mode is 607.07 gCO2-eq./ tkm and 284.67 g CO2-eq./tkm for road and rail mode respectively. This number reveals that road mode is 2.1 times larger than rail mode. The results also indicate that the main contribution of CO2 emission from road mode is in the operation stage which accounts for 70%; however it is the construction and supply chain stage that accounts for over 50% of the emission of rail mode.
여객부문 도로-철도 Modal shift에 따른 CO2 발생량 예측 연구
김초영(Cho-young Kim),이철규(Cheul-kyu Lee),김용기(Yong-ki Kim),피라다 푸티차이위본(Phirada Pruitichaiwiboon) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
2020 Korea GHG reduction goal is decreasing 4% compared with that of 2005. Effective counterplan of GHG redection goal needs to set for inductrial allocation and various reduction GHG technologies and policies for transportation have been developed. Modal shifr is one of these main policy and it focused on shifting as much freight as economically meaningful under current market conditions. It improves energy efficiency, consequently reduces GHG effect. This study is proposed as a preliminary studay of analyzing Modal shift effect. modal shift of car travelers to train is concerned in Seoul-Busan section, This study is based on a scenario which can maximize passenger occupancy rate to get the GHG reduction effect and the effect of modal shift of car to train is identified. According to this result, we can get GHG reduction effect through dealing with maximizing passenger occupancy rate on train. Therefore, in order to enhance this modal shift effect, train using rate need to increased and also improvement of policies and cost system are need to be considered to promote increasing use of train.
도시철도차량 설계단계에서 운행전력 소비량 예측기법 연구
이철규(Lee Cheul-Kyu),김용기(Kim Yong-Ki),피라다(Pruitichaiwiboon-Phirada) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
It is predicted that various types of urban railway vehicles will be running according to the characteristics of line and operation. Although heavy railway vehicle had been running in and around Seoul from the initial stage, lighter railway vehicle is running due to the operation cost and profit of the operation Company. Moreover, recent global warming problem forces railway industry to develop lighter railway vehicle and higher energy efficiency but railway vehicle and designer is difficult to predict energy consumption of railway vehicle at developing stage. In this study, proper energy consumption prediction method is suggested with the statistics of current energy consumption of each operation company.
환경성을 고려한 폐 복합재료(CFRP)의 재활용기법에 대한 연구
이철규(Lee Cheul-Kyu),김용기(Kim Yong-Ki),피라다(Pruitichaiwiboon-Phirada),김정석(Kim jung-Suck),주창식(Ju Chang-Sik) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
Various efforts of reducing the green house gas in the whole industrial fields including railway industry have been implemented. Tilting train is the key example because it can run more faster on the existing rail than others due to its composite body. The system has an advantage of light weight but also a task to solve, recycling of composite material. To recycle the CFRP(Carbon Fiber Reinforced Plastic), there are two typical methods; chemical and thermal method. In this study, more environmentally friendly recycling method was recommended through the environmental function through comparing both recycling methods.
김용기(Kim Yong-Ki),이철규(Lee Cheul-Gyu),피라다(Pruitichaiwiboon Phirada) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
Environmental declarations for products is one of the international standard (ISO 14020) out of 3 types Eco Labeling enacted by ISO(International standard organization). This application of LCA for researching harmful material emissions and quantifying their impacts on environment throughout the entire life cycle. Therefore, in this study the Environmental Declarations for products in domestic certification system and its technical aspects such as environmental assessment technique was to review.