05/00845 Environmental impact and life cycle assessment of heating and air conditioning systems, a simplified case study

2005 ◽  
Vol 46 (2) ◽  
pp. 123
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Air Conditioning ◽  
Air Conditioning Systems

scholarly journals Life Cycle Assessment of LNG Fueled Vessel in Domestic Services

2019 ◽  
Vol 7 (10) ◽  
pp. 359 ◽  
Author(s):  
Hwang ◽  
Jeong ◽  
Jung ◽  
Kim ◽  
Zhou
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
South Korea ◽  
Point Of View ◽  
Marine Fuel ◽  
Pm 2.5 ◽  
Fuel Supply ◽  
Selection Of

This research was focused on a comparative analysis of using LNG as a marine fuel with a conventional marine gas oil (MGO) from an environmental point of view. A case study was performed using a 50K bulk carrier engaged in domestic services in South Korea. Considering the energy exporting market for South Korea, the fuel supply chain was designed with the two largest suppliers: Middle East (LNG-Qatar/MGO-Saudi Arabia) and U.S. The life cycle of each fuel type was categorized into three stages: Well-to-Tank (WtT), Tank-to-Wake (TtW), and Well-to-Wake (WtW). With the process modelling, the environmental impact of each stage was analyzed based on the five environmental impact categorizes: Global Warming Potential (GWP), Acidification Potential (AP), Photochemical Potential (POCP), Eutrophication Potential (EP) and Particulate Matter (PM). Analysis results reveal that emission levels for the LNG cases are significantly lower than the MGO cases in all potential impact categories. Particularly, Case 1 (LNG import to Korea from Qatar) is identified as the best option as producing the lowest emission levels per 1.0 × 107 MJ of fuel consumption: 977 tonnages of CO2 equivalent (for GWP), 1.76 tonnages of SO2 equivalent (for AP), 1.18 tonnages of N equivalent (for EP), 4.28 tonnages of NMVOC equivalent (for POCP) and 26 kg of PM 2.5 equivalent (for PM). On the other hand, the results also point out that the selection of the fuel supply routes could be an important factor contributing to emission levels since longer distances for freight transportation result in more emissions. It is worth noting that the life cycle assessment can offer us better understanding of holistic emission levels contributed by marine fuels from the cradle to the grave, which are highly believed to remedy the shortcomings of current marine emission indicators.

Assessing potential desertification environmental impact in life cycle assessment. Part 2: agricultural case study in Spain and Argentina

2013 ◽  
Vol 18 (7) ◽  
pp. 1302-1315 ◽  
Author(s):  
Bárbara María Civit ◽  
Alejandro Pablo Arena ◽  
Montserrat Núñez ◽  
Pere Muñoz ◽  
Assumpció Antón ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact

Effect of Material Selection on the Life Cycle Assessment of Environmental Impact

2011 ◽  
Vol 383-390 ◽  
pp. 3387-3394 ◽  
Author(s):  
C.Y. Ng ◽  
K.B. Chuah
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Material Selection ◽  
Assessment Method ◽  
Percentage Increase ◽  
Design Alternatives ◽  
Product Design Process ◽  
Impact Assessment Method

This paper discusses the significant percentage increase of environmental impact generated in the manufacturing phase as a result of changes in the key material selection during the product design process. The findings in this paper are important for product designers. They need to pay extra attention when choosing plastics or metals when assessing design alternatives that can reduce the environmental impact. Four products were analysed in this case study namely water pump, hot pot, plastic kettle and stainless steel kettle. The environmental impacts of these four products are assessed by Life Cycle Assessment (LCA) and the CML approach from Institute of Environmental Sciences is adopted as the Life Cycle Impact Assessment method.

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