Conceptual design and energy analysis of novel integrated liquefied natural gas and fuel cell electrochemical power plant processes

Mehrpooya, Mehdi

doi:10.1016/j.energy.2016.05.126

Cited by 58 publications

(3 citation statements)

References 41 publications

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“…This was proposed with LNG evaporation in mind and shown as a standalone cycle, or a bottoming component for LNG fired Brayton plants. Mehrpooya proposed a system integrating LNG, a steam turbine power plant and fuel cells [15]. This system was designed for gas liquefaction instead of regasification, though it can provide some insights.…”

Section: Cryogenic Power Plant Technologiesmentioning

confidence: 99%

Archives of Thermodynamics

Szczygieł,

Rutczyk

2021

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Liquefied natural gas (LNG) is transported by the sea-ships with relatively low pressure (0.13-0.14 MPa) and very low temperature (about 100 K) in cryo-containers. Liquid phase, and the low temperature of the medium is connected with its high exergy. LNG receives this exergy during the liquefaction and is related with energy consumption in this process. When the LNG is evaporated in atmospheric regasifiers (what takes place in many on-shore terminals as well as in local regasifier stations) the cryogenic exergy is totally lost. fortunately, there are a lot of installations dedicated for exergy recovery during LNG regasification. These are mainly used for the production of electricity, but there are also rare examples of utilization of the LNG cryogenic exergy for other tasks, for example it is utilized in the fruit lyophilization process. In the paper installations based on the Brayton cycle gas turbine are investigated, in the form of systems with inlet air cooling, liquid phase injection, exhaust gas based LNG evaporation and mirror gas turbine systems. The mirror gas turbine system are found most exegetically effective, while the exhaust gas heated systems the most practical in terms of own LNG consumption.

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Section: Cryogenic Power Plant Technologiesmentioning

confidence: 99%

Archives of Thermodynamics

Szczygieł,

Rutczyk

2021

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“…Comparison of the proposed process with other case studied. (Mehrpooya dual mixed refrigerant (DMR), 29 Mehrpooya et al (AR‐MR1) and (AR‐MR1), 19 Shariati et al, 30 Ansarinasab et al (propane precooled mixed refrigerant [C3MR]) and (AR‐MR1), 31 Ghorbani et al, 32 Waldmann (single mixed refrigerant‐APCI) and (C3MR‐Linde), 33 Vatani et al (DMR‐APCI) and (mixed fluid cascade‐Linde) 1 [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Process Design and Analysismentioning

confidence: 99%

“…Peng Robinson equation is used for calculation of F I G U R E 1 0 Comparison of the proposed process with other case studied. (Mehrpooya dual mixed refrigerant (DMR), 29 Mehrpooya et al (AR-MR1) and (AR-MR1), 19 Shariati et al, 30 Ansarinasab et al (propane precooled mixed refrigerant [C3MR]) and (AR-MR1), 31 Ghorbani et al, 32 Waldmann (single mixed refrigerant-APCI) and (C3MR-Linde), 33 the physical properties of the process streams. Based on the published records in this area, 23,27,28 this equation can predict the properties with high accuracy.…”

Section: Process Simulation and Analysismentioning

confidence: 99%

Novel integrated helium extraction and natural gas liquefaction process configurations using absorption refrigeration and waste heat

et al. 2020

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Summary Conceptual design and modeling of novel‐integrated process configurations for helium extraction and natural gas liquefaction is investigated. Mixed fluid cascade (MFC) refrigeration system is considered for providing the needed refrigeration in the natural liquefaction section. Using an absorption refrigeration system as the precooling cycle is investigated in one of the introduced processes. Integrated flash and distillation method is used for helium extraction. Purity of the extracted crude helium is 50% (mole). Process streams operational condition and specifications of the devices are presented and explained. Composite curves of the heat exchangers demonstrate that thermal design has been done properly. Ratio of the power consumption to the produced liquefied natural gas (LNG) of the MFC process is 0.265 kWh per kg LNG and applying absorption refrigeration system instead of the pre‐cooling cycle decreases it to 0.1849 kWh per kg LNG. For the modified process with absorption refrigeration system helium extraction rate and power consumption ratio are 0.951 and 132.9 (kWh/[kgmole Helium]) respectively. Exergy method is applied on the under consideration processes. The results show that the compressors have the highest rate of exergy destruction among the other process equipment. An extensive economic analysis is done on the proposed processes. The results show that prime cost of the product (US$/kg LNG) for MFC and modified MFC processes are 0.1939 and 0.2069, respectively. Finally, a sensitivity analysis is done based on the economic factors such as electrical energy price and prime cost of the product.

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