In the last years, the increased demand of the energymarket has led to the increasing penetration of renewableenergies in order to achieve the primary energy supply.However, natural gas is expected to still play a key role inthe energy market, since its environmental impact is lowerthan other fossil fuels. It is mainly employed as gaseousfuel for stationary energy generation, but also as liquefiedfuel, as an alternative to the diesel fuel, in vehicularapplications.Liquefied Natural Gas is currently produced mainly inlarge plants directly located at the extraction sites andtransported by ships or tracks to the final users. In order toavoid costs and environmental related impact, in previousstudies Authors developed a new plant configuration forliquefied natural gas production directly at filling stations.One of the main issues of the process is that in varioussections the working fluid needs to be cooled by externalfluids (such as air for compressor inter and after-cooling orchilling fluids), in order to increase the globalperformances. As a consequence, an important amount ofheat could be potentially recovered from this LiquefiedNatural Gas production process. Thus, based on theobtained results, in this study the integration between theliquefaction process and an organic Rankine cycle isproposed. In fact, the heat recovered from the LiquefiedNatural Gas production process can be used as hot sourcewithin the organic Rankine cycle.The aim of the work is the identification of the optimalintegrated configuration, in order to maximize the heatrecovery and, as a consequence, to optimize the processefficiency. With this purpose, in this study differentconfigurations-in terms of considered organic fluid,architecture and origin of the recovered heat-have beendefined and analyzed by means of a commercial software.This software is able to thermodynamically evaluate theproposed process and had allowed to define the optimalsolution.
Ancona, M., Bianchi, M., Branchini, L., Pascale, A., Melino, F., Ottaviano, S., et al. (2018). Heat recovery from a liquefied natural gas production process by means of an organic rankine cycle. American Society of Mechanical Engineers (ASME) [10.1115/GT2018-75370].
Heat recovery from a liquefied natural gas production process by means of an organic rankine cycle
Ancona, M. A.;Bianchi, M.;Branchini, L.;Pascale, A.;Melino, F.;Ottaviano, S.;Peretto, A.;Scarponi, L. B.
2018
Abstract
In the last years, the increased demand of the energymarket has led to the increasing penetration of renewableenergies in order to achieve the primary energy supply.However, natural gas is expected to still play a key role inthe energy market, since its environmental impact is lowerthan other fossil fuels. It is mainly employed as gaseousfuel for stationary energy generation, but also as liquefiedfuel, as an alternative to the diesel fuel, in vehicularapplications.Liquefied Natural Gas is currently produced mainly inlarge plants directly located at the extraction sites andtransported by ships or tracks to the final users. In order toavoid costs and environmental related impact, in previousstudies Authors developed a new plant configuration forliquefied natural gas production directly at filling stations.One of the main issues of the process is that in varioussections the working fluid needs to be cooled by externalfluids (such as air for compressor inter and after-cooling orchilling fluids), in order to increase the globalperformances. As a consequence, an important amount ofheat could be potentially recovered from this LiquefiedNatural Gas production process. Thus, based on theobtained results, in this study the integration between theliquefaction process and an organic Rankine cycle isproposed. In fact, the heat recovered from the LiquefiedNatural Gas production process can be used as hot sourcewithin the organic Rankine cycle.The aim of the work is the identification of the optimalintegrated configuration, in order to maximize the heatrecovery and, as a consequence, to optimize the processefficiency. With this purpose, in this study differentconfigurations-in terms of considered organic fluid,architecture and origin of the recovered heat-have beendefined and analyzed by means of a commercial software.This software is able to thermodynamically evaluate theproposed process and had allowed to define the optimalsolution.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
