Published December 21, 2017 | Version v1
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4E analysis (Energy, Exergy, Environmental and Economic) of biomass energy valorisation systems

Creators

Description

The fossil fuels depletion and the need to reduce greenhouse gas emissions encourage the search for new energy sources that are renewable and less polluting. Thanks to its abundance, biomass appears as an interesting sector of replacement of fossil fuels. The objective of this work is to perform a 4E analysis (Energy, Exergy, Environmental and Economic) of an electricity production system via the gasification of palm waste. Palm waste constitutes one of the most abundant vegetable wealth in Tunisia and which today, remain very little exploited. A fixed bed gasifier coupled to an internal combustion engine is considered to produce 330 kW of electricity. The Cold Gas Efficiency of the process is 58.58%. The results show that the energy and exergy yields of the system are 22.6% and 19.22%, respectively. The environmental performance of the system is evaluated using a Life Cycle Assessment (LCA). The economic evaluation is carried out in order to evaluate the cost of electricity production by the gasification plant. The results give a cost of 5.56 ct euro for 1 kWh. (author)

Abstract (French)

L'epuisement des ressources fossiles et la necessite de reduire les emissions de gaz a effet de serre incitent a rechercher de nouvelles sources d'energie a la fois renouvelables et moins polluantes. La biomasse, par son abondance, apparait comme une filiere interessante de remplacement des energies fossiles et notamment du petrole. L'objectif de ce travail est d'effectuer une analyse 4E (Energetique, Exergetique, Environnementale et Economique) d'un systeme de production de l'electricite via la gazeification des dechets de palmiers. Ces derniers constituent l'une des richesses vegetales les plus abondantes en Tunisie et qui de nos jours, restent tres peu exploitees. Un gazeifieur a lit fixe couple a un moteur a combustion interne est considere pour produire 330 kW d'electricite. Le rendement de gazeification 'Cold Gaz Efficiency' du procede est de 58,58%. Les resultats montrent que les rendements energetique et exergetique du systeme etudie sont de 22,6% et 19,22%, respectivement. Les performances environnementales du systeme sont evaluees a l'aide d'une Analyse de Cycle de Vie (ACV). L'evaluation economique est realisee dans le but d'evaluer le cout de production de l'electricite par l'installation de gazeification. Les resultats donnent un cout de 5,56 ct euro pour 1kWh. (auteur)

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Additional details

Additional titles

Original title (French)
Analyse 4 E (Energetique, Exergetique, Environnementale et Economique) de systemes de valorisation energetique de biomasses

Publishing Information

Imprint Pagination
193 p.
Report number
FRNC-TH--10199

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
49089297
Subject category
S09: BIOMASS FUELS;
Resource subtype / Literary indicator
Thesis
Descriptors DEI
AGRICULTURAL WASTES; BIOMASS CONVERSION PLANTS; COMPUTERIZED SIMULATION; COST ESTIMATION; ECONOMIC ANALYSIS; ENVIRONMENTAL IMPACTS; EXERGY; GASIFICATION; LIFE CYCLE ASSESSMENT; PACKED BEDS; REFUSE-FUELED POWER PLANTS; SENSITIVITY ANALYSIS; SYNTHESIS GAS
Descriptors DEC
ECONOMICS; ENERGY; FLUIDS; GASES; INDUSTRIAL PLANTS; ORGANIC WASTES; POWER PLANTS; SIMULATION; THERMAL POWER PLANTS; THERMOCHEMICAL PROCESSES; WASTES

Optional Information

Notes
106 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses