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

Montero Carrero, M.;De Paepe, W.;Bram, S.;Musin, F.;Contino, Francesco;et.al.
(2015) International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2015 (29.June.2015)

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  • Montero Carrero, M.
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  • De Paepe, W.
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  • Bram, S.
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  • Musin, F.
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  • Contino, Francescoorcid-logoUCLouvain
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Abstract
Micro Gas Turbines (mGTs) offer valuable advantages for small-scale Combined Heat and Power (CHP) production comped 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 mket. 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 compison of the economic profitability and the primy 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 scenios. 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 e viable in scenios with high electricity and low natural gas prices. For those cases in which investment is feasible, the revenues with mHAT e the highest. This is due to the fact that mHAT units e able to run all ye long thanks to their heat generation flexibility. On the other hand, the greatest primy energy savings e achieved with ICE units-which have the highest overall efficiencies-while mHAT savings e substantially lower.
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Montero Carrero, M., De Paepe, W., Bram, S., Musin, F., Parente, A., & Contino, F. (2015). Economic analysis of a micro humid air turbine and an internal combustion engine based on hourly demand. International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2015. https://hdl.handle.net/2078.5/169785