Techno-economic analysis of green hydrogen production, storage, and waste heat recovery plant in the context of Nepal
Bishwash Paneru (Enviro Renewables, Tribhuvan University)
Anup Paudel (Tribhuvan University, Enviro Renewables)
Biplov Paneru (Pokhara University)
Vikram Alexander (Universitas Sumatera Utara)
D. P. Mainali (TU Delft - Team Maria Santofimia Navarro)
Sameep Karki (Enviro Renewables)
Seemant Karki (Enviro Renewables)
Sarthak Bikram Thapa (Enviro Renewables)
Khem Narayan Poudyal (Tribhuvan University)
Ramhari Poudyal (Purwanchal University)
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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.