TY - JOUR
T1 - Comparative Life Cycle Assessment of remanufactured liquefied natural gas and diesel engines in China
AU - Shi, Junli
AU - Peng, Shitong
AU - Liu, Zhichao
AU - Zhang, Hong-Chao
AU - Jiang, Qiuhong
AU - Li, Tao
N1 - Funding Information:
The authors gratefully acknowledge the support of Jinan Fuqiang power Co., LTD , Zhangjiagang Furui Special Equipment CO., LTD and the National Basic Research Program of China (Grant No. 2011CB013406).
Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/8/15
Y1 - 2015/8/15
N2 - Abstract Life cycle assessment (LCA) is a useful analysis tool to estimate the energy consumption and environmental emissions resulting from economic activities. This study provides a comparative LCA of remanufactured liquefied natural gas (LNG) and diesel engines. Furthermore, the paper identifies the processes that contribute most to energy consumption and environmental impacts during the life cycles of the two engines. Six environmental impacts were considered in this study: global warming potential (GWP); acidification potential (AP); eutrophication potential (EP); photochemical ozone creation potential (POCP); ozone depletion potential (ODP); and primary energy demand (PED). The results show that remanufacturing LNG engines reduces energy consumption by 41.91% compared with remanufacturing diesel engines. The greatest benefit related to the environmental impacts is EP, which is reduced by 73.69%, followed by AP, GWP and POCP, which are reduced by 71.49%, 47.14% and 43.90%, respectively. In addition, the cost benefit of the entire life cycle is also significant for LNG engines. In the life cycle of the two types of remanufactured engines, engine usage causes larger environmental impacts, especially with regard to PED and POCP, and component remanufacturing contributes most to ODP. However, it should be noted that in the remanufacturing stage, because more materials and energy are consumed for the LNG engine, the environmental impacts and costs are higher than those for the diesel engine. Nevertheless, the advantages of remanufacturing end-of-life diesel engines into LNG engines are obvious because of the significant benefits during LNG engine use.
AB - Abstract Life cycle assessment (LCA) is a useful analysis tool to estimate the energy consumption and environmental emissions resulting from economic activities. This study provides a comparative LCA of remanufactured liquefied natural gas (LNG) and diesel engines. Furthermore, the paper identifies the processes that contribute most to energy consumption and environmental impacts during the life cycles of the two engines. Six environmental impacts were considered in this study: global warming potential (GWP); acidification potential (AP); eutrophication potential (EP); photochemical ozone creation potential (POCP); ozone depletion potential (ODP); and primary energy demand (PED). The results show that remanufacturing LNG engines reduces energy consumption by 41.91% compared with remanufacturing diesel engines. The greatest benefit related to the environmental impacts is EP, which is reduced by 73.69%, followed by AP, GWP and POCP, which are reduced by 71.49%, 47.14% and 43.90%, respectively. In addition, the cost benefit of the entire life cycle is also significant for LNG engines. In the life cycle of the two types of remanufactured engines, engine usage causes larger environmental impacts, especially with regard to PED and POCP, and component remanufacturing contributes most to ODP. However, it should be noted that in the remanufacturing stage, because more materials and energy are consumed for the LNG engine, the environmental impacts and costs are higher than those for the diesel engine. Nevertheless, the advantages of remanufacturing end-of-life diesel engines into LNG engines are obvious because of the significant benefits during LNG engine use.
KW - Diesel engine
KW - Environmental impact
KW - LNG engine
KW - Life cycle assessment (LCA)
KW - Remanufacturing
UR - http://www.scopus.com/inward/record.url?scp=84930375446&partnerID=8YFLogxK
U2 - 10.1016/j.jclepro.2015.03.080
DO - 10.1016/j.jclepro.2015.03.080
M3 - Article
VL - 101
SP - 129
EP - 136
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
M1 - 5348
ER -