@article{ref1,
title="Exergetic analysis, optimization and comparison of LNG cold exergy recovery systems  for transportation",
journal="Entropy (Basel, Switzerland)",
year="2018",
author="Dorosz, Paweł and Wojcieszak, Paweł and Malecha, Ziemowit",
volume="20",
number="1",
pages="e20010059-e20010059",
abstract="LNG (Liquefied Natural Gas) shares in the global energy market is steadily  increasing. One possible application of LNG is as a fuel for transportation. Stricter air pollution regulations and emission controls have made the natural gas a  promising alternative to liquid petroleum fuels, especially in the case of heavy  transport. However, in most LNG-fueled vehicles, the physical exergy of LNG is  destroyed in the regasification process. This paper investigates possible LNG exergy  recovery systems for transportation. The analyses focus on &quot;cold energy&quot; recovery  systems as the enthalpy of LNG, which may be used as cooling power in air  conditioning or refrigeration. Moreover, four exergy recovery systems that use LNG  as a low temperature heat sink to produce electric power are analyzed. This includes  single-stage and two-stage direct expansion systems, an ORC (Organic Rankine Cycle)  system, and a combined system (ORC + direct expansion). The optimization of the  above-mentioned LNG power cycles and exergy analyses are also discussed, with the  identification of exergy loss in all components. The analyzed systems achieved  exergetic efficiencies in the range of 20 % to 36 % , which corresponds to a net  work in the range of 214 to 380 kJ/kg L N G.<p /> <p>Language: en</p>",
language="en",
issn="1099-4300",
doi="10.3390/e20010059",
url="http://dx.doi.org/10.3390/e20010059"
}