Authors:
Luca Cimmino
1
;
Jimmy Burgos
2
and
Ursula Eicker
2
Affiliations:
1
Department of Industrial Engineering University of Naples Federico II, Naples, Italy
;
2
Department of Buildings, Civil and Environmental Engineering, Concordia University, Montréal, Canada
Keyword(s):
Polygeneration Systems, Cogeneration, Renewable Energy Systems, Feedback Control Strategies, Energy Storage.
Abstract:
The proposed work aims to analyse an optimal control strategy applied to a polygeneration system based on a gasification unit, an anaerobic digester and an alkaline electrolyzer to meet the fuel demand of an internal combustion engine. The purpose of the studied system is to meet the electricity and thermal energy demand of several end-users. The focus of this paper is on the fuel management strategy for a 2 MW cogenerator used to meet both these demands for a hospital. In the proposed model, the fuel injected into the internal combustion engine is a mixture of gaseous flows produced by renewable energy systems. The mixture is first composed of biogas, produced by an anaerobic digester fed by organic urban wastes. Secondarily, hydrogen obtained from the electrolysis of water through a 2 MW alkaline cell is considered. In addition, syngas produced by a 1.7 MW allothermal downstream gasification unit is adopted with different gasifying agents considered, including oxygen produced by th
e alkaline electrolyzer. Results show that with the adopted strategy, the fuel energy demand is met by 15% by biogas, 3% by hydrogen, 45% by syngas using oxygen as gasifying agent and 37% by syngas using steam as gasifying agent.
(More)