Does humidification improve the micro Gas Turbine cycle? Thermodynamic assessment based on Sankey and Grassmann diagrams

Carrero, Marina Montero; Paepe, Ward De; Bram, Svend; Parente, Alessandro; Contino, Francesco

doi:10.1016/j.apenergy.2017.05.067

Cited by 32 publications

(9 citation statements)

References 41 publications

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“…Micro humid air turbines, Figure 16, have solved this problem by increasing the mass flow rate of gas in the micro turbine [12,401,402]. In this technology, the heat recovered from the exhaust gas is used to produce hot water [403][404][405][406][407]. Produced hot water is injected in a saturator that humidifies the air entering the combustion chamber to increase the mass flowrate to the turbine, which leads to an increase in power output and efficiency.…”

Section: Micro Humid Air Turbinesmentioning

confidence: 99%

Advances, challenges, and perspectives of biogas cleaning, upgrading, and utilisation

Golmakani

Nabavi

Wadi

et al. 2022

Fuel

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Section: Micro Humid Air Turbinesmentioning

confidence: 99%

Advances, challenges, and perspectives of biogas cleaning, upgrading, and utilisation

Golmakani

Nabavi

Wadi

et al. 2022

Fuel

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“…The proposed layout, shown in Figure 3, has been modeled with Aspen Plus and the simulations predicted a rise in electrical efficiency of 2.2% for 5% of steam instead of air. Montero et al [32] examined the application of humidified cycle on a Turbec T100 by adding a saturator between the compressor and the recuperator and introducing an economizer just after the recuperator. Results of their simulations highlighted that the mHAT layout (Figure 4) leads to an improvement of the overall efficiency.…”

Section: Humidified Gas Turbinesmentioning

confidence: 99%

“…100 and 500 kW In-house (TEMP, SAT, TRANSEO) Turbomachinery performance maps [29,30] Turbec T100 Aspen Plus Compressor and turbine efficiency assumed constant [31] Turbec T100 Aspen Plus Performance map for Compressor, chocked turbine [32] Turbec T100 Aspen Hysys…”

Section: Mgt Modelmentioning

confidence: 99%

Numerical Modeling of Energy Systems Based on Micro Gas Turbine: A Review

Reale

Sannino

2022

Energies

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In the context of the great research pulse on clean energy transition, distributed energy systems have a key role, especially in the case of integration of both renewable and traditional energy sources. The stable interest in small-scale gas turbines can further increase owing to their flexibility in both operation and fuel supply. Since their not-excellent electrical efficiency, research activities on micro gas turbine (MGT) are focused on the performance improvements that are achievable in several ways, like modifying the Brayton cycle, integrating two or more plants, using cleaner fuels. Hence, during the last decades, the growing interest in MGT-based energy systems encouraged the development of many numerical approaches aimed to provide a reliable and effective prediction of the energy systems' behavior. Indeed, numerical modeling can help to individuate potentialities and issues of each enhanced layout or hybrid energy system, and this review aims to discuss the various layout solutions proposed by researchers, with particular attention to recent publications, highlighting the adopted modeling approaches and methods.

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“…This means that the operational flexibility of the units is enhanced, as they are able to run in cogeneration mode when there is an external heat demand and with water injection the rest of the year. The detailed thermodynamic mechanisms that lead to an increase in electrical efficiency through water injection can be found in [20].…”

Section: The Basics Of the Micro Humid Air Turbine Cyclementioning

confidence: 99%

“…The beneficial effect of transforming an mGT into an mHAT has been broadly studied from numerical [10][11][12][13][14] and experimental perspectives [15][16][17][18][19][20], as summarised by De Paepe et al [21] in our review of humidified microturbines. In terms of the economics of mHAT, the authors of this paper compared the profitability of the ICE, mGT and mHAT cycles for a wide variety of natural gas and electricity price scenarios [22,23].…”

mentioning

confidence: 99%

Is There a Future for Small-Scale Cogeneration in Europe? Economic and Policy Analysis of the Internal Combustion Engine, Micro Gas Turbine and Micro Humid Air Turbine Cycles

et al. 2019

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If more widely deployed, small-scale cogeneration could increase energy efficiency in Europe. Of the two main commercially available technologies—the Internal Combustion Engine (ICE) and the micro Gas Turbine (mGT)—the ICE dominates the market due to its higher electrical efficiency. However, by transforming the mGT into a micro Humid Air Turbine (mHAT), the electrical efficiency of this cycle can increase, thus enhancing its operational flexibility. This paper presents an in-depth policy and economic assessment of the the ICE, mGT and mHAT technologies for dwellings based in Spain, France and Belgium. The hourly demands of average households, the market conditions and the subsidies applicable in each region are considered. The aim is twofold: to evaluate the profitability of the technologies and to assess the cogeneration policies in place. The results show that only the ICE in Brussels is economically viable, despite all units providing positive energy savings in all locations (except mHAT in Spain). Of the three different green certificate schemes offered in Belgium, Brussels is the one leading to the best outcome. Spain awards both capital and operational helps, although auto-consumption is not valued. The same applies to the complex French feed-in tariff. Conclusively, with the current policies, investing in small-scale cogeneration is in general not attractive and its potential efficiency gains remain unveiled.

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Does humidification improve the micro Gas Turbine cycle? Thermodynamic assessment based on Sankey and Grassmann diagrams

Cited by 32 publications

References 41 publications

Advances, challenges, and perspectives of biogas cleaning, upgrading, and utilisation

Advances, challenges, and perspectives of biogas cleaning, upgrading, and utilisation

Numerical Modeling of Energy Systems Based on Micro Gas Turbine: A Review

Is There a Future for Small-Scale Cogeneration in Europe? Economic and Policy Analysis of the Internal Combustion Engine, Micro Gas Turbine and Micro Humid Air Turbine Cycles

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