Techno-economic analysis of green hydrogen production, storage, and waste heat recovery plant in the context of Nepal

Journal article (2024)

Authors

Bishwash Paneru Tribhuvan University, Enviro Renewables
Anup Paudel Enviro Renewables, Tribhuvan University
Biplov Paneru Pokhara University
Vikram Alexander Universitas Sumatera Utara
D.P. Mainali Team Maria Santofimia Navarro - Mechanical, Maritime and Materials Engineering
Sameep Karki Enviro Renewables
Seemant Karki Enviro Renewables
Sarthak Bikram Thapa Enviro Renewables
Khem Narayan Poudyal Tribhuvan University
Ramhari Poudyal Purwanchal University
Research Group
Team Maria Santofimia Navarro (Mechanical, Maritime and Materials Engineering) (TU Delft)
Waste heat recovery Alkaline water electrolysis Organic rankine cycle Multistage compression Surplus electricity Type IV cylinder
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Published Date

2024

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Materials Science and Engineering

Research Group

Team Maria Santofimia Navarro

Abstract

Alkaline water electrolysis (AWE) operated by surplus electricity is suitable for producing green hydrogen in Nepal. Simulation models are built using DWSIM software for AWE, multistage compression, and the Organic Rankine Cycle (ORC). The AWE system's Capital Expenditure (CAPEX) is determined to be $47 million and Operational Expenditure (OPEX) of $7.65 million/year. The storage system, including the multistage compression system and Type IV cylinders, has a CAPEX of $52 million and an OPEX of $17 million/year. The ORC has a CAPEX of $500,000 and an OPEX of $200,000/year. The thermal power generated from AWE and multistage compression can be converted to electricity by the ORC and supplied to the AWE system. This process decreases the Levelized Cost of Hydrogen (LCOH) from $3.5141/kg over 5 years to $3.4725/kg over 25 years. The techno-economic analysis performed confirms the feasibility of implementing these plants in Nepal.