• Citer

Economic analysis of a micro humid air turbine and an internal combustion engine based on hourly demand

par Montero Carrero, Marina ;De Paepe, Ward ;Bram, Svend;Musin, Frédérique;Parente, Alessandro ;Contino, Francesco
Référence international conference on Efficiency, Cost, Optimization, Simulation and Environmental impact of energy systems(ECOS 2016: Pau, France), Proceedings of the 28th international conference on Efficiency, Cost, Optimization, Simulation and Environmental impact of energy systems (ECOS 2015)
Publication Publié, 2015

Publication dans des actes

• Accès en ligne
• Détails
• Contenu
• Statistiques

Résumé :

Micro Gas Turbines (mGTs) offer valuable advantages for small-scale Combined Heat and Power (CHP) production compared to internal combustion engines (ICEs): lower maintenance costs, cleaner exhaust, concentration of the residual heat in a single source (the exhaust gases), etc. Nevertheless, mGTs have lower electrical efficiencies, fact that has prevented them from penetrating in the CHP market. Hot liquid water injection—by means of a saturation tower within the micro Humid Air Turbine (mHAT) cycle—allows both improving the flexibility of heat production and the electrical efficiency of mGTs; two qualities that if enhanced would result in an increased economic feasibility of the technology.This paper presents a comparison of the economic profitability and the primary energy savings of an mGT, an ICE and an mHAT unit operated in real network conditions. The input to the study consists of (1) hourly heat and electricity demand profiles of two distinctive users and (2) 25 electricity and natural gas price scenarios. Our aim is to investigate whether the increase in flexibility and electrical efficiency achieved when transforming an mGT into an mHAT allows them to outperform ICEs.Results show that the three technologies are viable in scenarios with high electricity and low natural gas prices. For those cases in which investment is feasible, the revenues with mHAT are the highest. This is due to the fact that mHAT units are able to run all year long thanks to their heat generation flexibility. On the other hand, the greatest primary energy savings are achieved with ICE units—which have the highest overall efficiencies—while mHAT savings are substantially lower.