Techno-economic analysis of large-scale green hydrogen production and storage

[Display omitted] •A 10-MW PEM electrolyser model with integrated heat recovery is presented.•The model allows for simulating different PEM electrolysis plant sizes.•Waste heat recovery increases overall efficiency from 71.4% to 98%.•The feasibility of waste heat recovery with ORC is electricity pri...

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Vydáno v:Applied energy Ročník 346; s. 121333
Hlavní autoři: María Villarreal Vives, Ana, Wang, Ruiqi, Roy, Sumit, Smallbone, Andrew
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier Ltd 15.09.2023
Témata:
capital
clean energy
economic analysis
electricity
electrolysis
energy
Green hydrogen
hydrogen
Hydrogen compression and storage
hydrogen production
Organic Rankine Cycle
Proton exchange membrane electrolyser
sustainable development
Techno-economic analysis
Waste heat recovery
wastes
wind
CCUS
GWP
ORC
Hydrogen compression and storage
GHG
AEL
Green hydrogen
SPE
CAPEX
Organic Rankine Cycle
Techno-economic analysis
OPEX
CCS
GDP
LCOH
Waste heat recovery
NPV
HHV
Proton exchange membrane electrolyser
PEM
SMR
LF
SOEC
ISSN:0306-2619, 1872-9118
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Shrnutí:[Display omitted] •A 10-MW PEM electrolyser model with integrated heat recovery is presented.•The model allows for simulating different PEM electrolysis plant sizes.•Waste heat recovery increases overall efficiency from 71.4% to 98%.•The feasibility of waste heat recovery with ORC is electricity price dependent.•The load factor is a significant contributor to the LCOH. Producing clean energy and minimising energy waste are essential to achieve the United Nations sustainable development goals such as Sustainable Development Goal 7 and 13. This research analyses the techno-economic potential of waste heat recovery from multi-MW scale green hydrogen production. A 10 MW proton exchange membrane electrolysis process is modelled with a heat recovery system coupled with an organic Rankine cycle (ORC) to drive the mechanical compression of hydrogen. The technical results demonstrate that when implementing waste heat recovery coupled with an ORC, the first-law efficiency of electrolyser increases from 71.4% to 98%. The ORC can generate sufficient power to drive the hydrogen's compression from the outlet pressure at the electrolyser 30 bar, up to 200 bar. An economic analysis is conducted to calculate the levelised cost of hydrogen (LCOH) of system and assess the feasibility of implementing waste heat recovery coupled with ORC. The results reveal that electricity prices dominate the LCOH. When electricity prices are low (e.g., dedicated offshore wind electricity), the LCOH is higher when implementing heat recovery. The additional capital expenditure and operating expenditure associated with the ORC increases the LCOH and these additional costs outweigh the savings generated by not purchasing electricity for compression. On the other hand, heat recovery and ORC become attractive and feasible when grid electricity prices are higher.
Bibliografie:ObjectType-Article-1
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ISSN:0306-2619
1872-9118
DOI:10.1016/j.apenergy.2023.121333