Abstract

The coupling of renewable energy and hydrogen technologies represents in the mid-term a very interesting way to match the tasks of increasing the reliable exploitation of wind and sea wave energy and introducing clean technologies in the transportation sector. This paper presents two different feasibility studies: the first proposes two plants based on wind and sea wave resource for the production, storage and distribution of hydrogen for public transportation facilities in the West Sicily; the second applies the same approach to Pantelleria (a smaller island), including also some indications about solar resource. In both cases, all buses will be equipped with fuel-cells. A first economic analysis is presented together with the assessment of the avoidable greenhouse gas emissions during the operation phase. The scenarios addressed permit to correlate the demand of urban transport to renewable resources present in the territories and to the modern technologies available for the production of hydrogen from renewable energies. The study focuses on the possibility of tapping the renewable energy potential (wind and sea wave) for the hydrogen production by electrolysis. The use of hydrogen would significantly reduce emissions of particulate matter and greenhouse gases in urban districts under analysis. The procedures applied in the present article, as well as the main equations used, are the result of previous applications made in different technical fields that show a good replicability.

Highlights

  • Among the actions that the Kyoto Protocol indicates in order to reduce CO2 emissions, innovative technologies are promoted, in particular the renewable energy

  • Hydrogen and fuel cell technologies were identified amongst the new energy technologies needed needed to achieve a 60% to 80% reduction in greenhouse gases by 2050

  • The wind and sea wave energy availability in the Province of Trapani and smaller Sicilian islands shows that the use of these resources for the electrolytic hydrogen production would allow replacing the entire fleet of urban buses powered by diesel with an equal number of hydrogen vehicles

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Summary

Introduction

Among the actions that the Kyoto Protocol indicates in order to reduce CO2 emissions, innovative technologies are promoted, in particular the renewable energy. The hydrogen produced can be employed in different applications by the use of fuel cells, for example, in the transport sector or in the same electrical sector, enabling the delivery of electrical energy according to a predetermined load profile. In Brazil, about 80% of electrical power production is based on hydroelectric plants For this reason, in Brazil, the research is focused on the production of hydrogen that could be exported abroad or used in public transport [12]. Many studies investigated the energy potential and technical solutions for exploitation, in order to produce electrical energy, hydrogen or fresh water [15,16,17]. The main aim of this work is to analyze a possible application of hydrogen production by the renewable sources such as wind and wave energy and hydrogen utilization in public transport.

Renewable Energy Sources in Trapani
Average wind speedin inSicily
Seawave Source
Graphic representation
First Case Study
Scenarios
Avoided
Economic Analysis
Introduction inSea
11. The main reason is the inefficient transportation
Renewable
A Case Study of Transport Sector Renewal in the Island of Pantelleria
Findings
Conclusions
Full Text
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