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RESEARCH PAPERS

Assessment of Renewable Energy Solutions in an Italian Small Island Energy System Using a Transient Simulation Model

[+] Author and Article Information
Alessandro Corsini, Franco Rispoli

Dipartimento di Meccanica e Aeronautica, Università di Roma “La Sapienza,” Via Eudossiana, 18, I00184 Rome, Italy

Mario Gamberale

Azzero CO2 , ESCO, Via Vicenza, 5A, I00185 Rome, Italy

J. Sol. Energy Eng 128(2), 237-244 (Jul 13, 2005) (8 pages) doi:10.1115/1.2189870 History: Received December 07, 2004; Revised July 13, 2005

This paper presents a transient model of the energy system of the small Italian island of Ventotene. The model has been developed as a tool to validate the performance related to the integration of renewable energy technologies and energy efficiency measures into the island stand-alone power system, in presence of seasonal-dependent electric load equilibrium conditions. A hydrogen-based energy system has been proposed as an effective option for the seasonal buffering of the stochastic power contribution from renewable energy sources. The time-dependent behavior of the hybrid, diesel, and hydrogen-renewable, power generation system has been investigated by matching it with the electric load data with an hourly distribution over the period of one reference year. The technical feasibility and the behavior of the systems have been evaluated in terms of its electric and environmental performance.

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Copyright © 2006 by American Society of Mechanical Engineers
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Figures

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Figure 1

Daily electric load curves of Giglio island, seasonal dependence (2)

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Figure 2

Annual electricity end uses in Ventotene island, 2000 data (10)

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Figure 3

Ventotene island energy system, the TRNSYS model chart

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Figure 4

Scenario 0, annual distribution of the electric load PD

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Figure 5

Diesel power system operating conditions for scenario (0): Number of running generators (NDEGs), and supplied power (PDEGs)

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Figure 6

Diesel power system operating conditions for scenario (0): DEGS thermal efficiency (ηDEGs), and fuel consumption (fcDEGs)

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Figure 7

Scenario 1 energy system flow diagram

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Figure 8

Comparison of the electric power demands PD: scenarios 0 and 1

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Figure 9

Diesel power system operating conditions for scenario 1: number of running generators (NDEGs) and supplied power (PDEGs)

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Figure 10

Scenario 2 energy system flow diagram

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Figure 11

Comparison of electric power demand PD(0) versus renewable energy systems power supply PRES(2)

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Figure 12

Scenario 2, hydrogen-based energy system behavior in winter week 11

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Figure 13

Scenario 2, hydrogen-based energy system behavior in summer week 33

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Figure 14

Fuel oil consumption monthly distributions

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