**List of abbreviations**


**131**

*Energy Efficiency Management: State of the Art and Improvement Potential Analysis…*

joules)

joules)

UNFCCC United Nations Framework Convention on Climate Change

*DOI: http://dx.doi.org/10.5772/intechopen.86552*

FTK freight tonne kilometer

GDP gross domestic product

GWP global warming potential

IEA International Energy Agency

LPDI low-pressure direct injection LPG liquefied petroleum gases

NAZCA non-state actor for climate action

RESS rechargeable energy storage system SCR selective catalytic reduction

HVAC heat, ventilation, and air conditioning IATA International Air Transport Association

HFC hydrofluorocarbon HSR high-speed rail

LED light-emitting diode LNG liquefied natural gas

m<sup>2</sup> square meter MJ megajoule (106

N2O nitrous oxide

NF3 nitrogen trifluoride PFC perfluorocarbon PJ petajoule (1015 joules) pkm person kilometers PRS progress rail service

SF6 sulfur hexafluoride tkm tonne kilometers

VA value added

**Author details**

TREMOD transport emission model

WEO World Energy Outlook

provided the original work is properly cited.

WESS wayside energy storage system

Corinna Cermak, Erich Markl\* and Maximilian Lackner

University of Applied Sciences FH Technikum Wien, Vienna, Austria

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,

\*Address all correspondence to: erich.markl@technikum-wien.at

gas natural gas

H2 hydrogen

GE general electric GHG greenhouse gas GJ gigajoule (109

*Energy Efficiency Management: State of the Art and Improvement Potential Analysis… DOI: http://dx.doi.org/10.5772/intechopen.86552*

