Skoči na glavni sadržaj

Izvorni znanstveni članak

https://doi.org/10.21278/brod74203

Energy, exergy, economic and environmental analysis of a regasification system integrating simple ORC and LNG open power cycle in floating storage regasification units

Manuel Naveiro orcid id orcid.org/0000-0002-5018-8182 ; Energy Engineering Research Group, University Institute of Maritime Studies, ETSNM, University of A Coruña
Manuel Romero Gómez orcid id orcid.org/0000-0001-7888-8212 ; Energy Engineering Research Group, University Institute of Maritime Studies, ETSNM, University of A Coruña
Ignacio Arias-Fernández ; Energy Engineering Research Group, University Institute of Maritime Studies, ETSNM, University of A Coruña
Álvaro Baaliña Insua ; Energy Engineering Research Group, University Institute of Maritime Studies, ETSNM, University of A Coruña


Puni tekst: engleski pdf 989 Kb

str. 39-75

preuzimanja: 205

citiraj


Sažetak

A thermodynamic, economic and environmental analysis of a regasification system including a simple Organic Rankine Cycle (ORC) and an Open Organic Rankine Cycle (OC) to utilise the liquefied natural gas (LNG) cold energy is carried out in the present paper. The proposed system, called ORC-OC, uses ambient seawater as heat source (open loop) and is implemented on board a Floating Storage Regasification Unit (FSRU) in order to reduce the greenhouse gas (GHG) emissions associated with the electricity generation plant, i.e., dual fuel (DF) engines. Regarding the ORC working fluids analysed, an ethane/propane zeotropic mixture is applied. The ORC-OC is compared with the simple ORC architecture, giving the first one better energy (lower specific energy consumption), exergy (higher exergy efficiency) and environmental (lower CO2e emissions) results. When compared to the regasification systems installed on board, the ORC-OC system reduces the specific energy consumption by 86.99 % and increases the exergy efficiency by 17.82 % with respect to the most efficient conventional system installed on FSRUs (direct seawater regasification system), leading to a reduction of CO2e emissions of more than 80 %. In addition, the ORC-OC system is more cost-effective than conventional regasification systems when the LNG price is above 6,508 USD/MMBtu.

Ključne riječi

Floating Storage Regasification Unit; zeotropic mixture; exergy analysis; liquefied natural gas cold energy; organic Rankine

Hrčak ID:

295988

URI

https://hrcak.srce.hr/295988

Datum izdavanja:

1.3.2023.

Posjeta: 608 *