The influence of vapor superheating on the level of heat regeneration in a subcritical ORC coupled with gas power plant

Wiśniewski, S.; Borsukiewicz-Gozdur, A.

doi:10.2478/v10173-010-0022-9

Cited by 16 publications

(4 citation statements)

References 2 publications

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“…where cog Q represents the thermal power from the condensation process used for cogeneration, while η sb is the efficiency of a second boiler that should be added to produce cog Q separately. Cyclohexane has been selected as working fluid for the energetic analysis due to its high operating temperatures, consistent with the requirements of biomass power plants [5,[18][19][20]. The analyses have been performed adopting saturated and superheated conditions at the turbine inlet.…”

Section: Methodsmentioning

confidence: 99%

Biomass Exploitation in Efficient ORC Systems

Morrone

Algieri

2012

AMM

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The research intends to investigate the energetic performances of Organic Rankine Cycles (ORCs) for the exploitation of the biomass resulting from agricultural residues. To this purpose, a parametric analysis has been carried out. Saturated and superheated conditions at the turbine inlet have been imposed and the effect of the internal regeneration on plant performances has been studied. The results highlight that ORC plants represent an interesting and sustainable solution for small-scale and decentralised power production. Moreover, the analysis shows the significant impact of the temperature and internal regeneration technique on the performances of the biomass power plants.

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Section: Methodsmentioning

confidence: 99%

Biomass Exploitation in Efficient ORC Systems

Morrone

Algieri

2012

AMM

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“…The investigation has been performed considering a subcritical ORC unit with saturated conditions at the turbine entrance and toluene has been selected as working fluid owing to its thermal stability and high performance, in line with the literature [27,41,56]. Specifically, the maximum evaporation temperature has been fixed to 300 • C to prevent the liquid presence during the expansion whereas the minimum temperature at the turbine inlet has been set equal to 150 • C. The condensation temperature is always equal to 80 • C to satisfy the user heat demand according to the literature [57].…”

Section: Orc Subsystemmentioning

confidence: 99%

“…Furthermore, a noticeable potential for combing renewable energy sources (e.g., wind energy, solar and biofuel) exists. In particular, the integration of wind and solar energy appears very interesting, especially in urban areas [20,[27][28][29]. To this purpose, both small and large-scale wind turbines have been installed or are receiving increasing attention for suburban and urban location [30][31][32] owing to their unexploited high potential and their possible role for an efficient transition towards sustainable cities [33,34].…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Analysis of Biofuel, Solar and Wind Multi-Source Small-Scale CHP Systems

2020

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The aim of the paper is the techno-economic analysis of innovative integrated combined heat and power (CHP) systems for the exploitation of different renewable sources in the residential sector. To this purpose, a biofuel-driven organic Rankine cycle (ORC) is combined with a wind turbine, a photovoltaic system and an auxiliary boiler. The subsystems work in parallel to satisfy the electric and heat demand of final users: a block of 40 dwellings in a smart community. A 12.6 kWel ORC is selected according to a thermal-driven strategy, while wind and solar subsystems are introduced to increase the global system efficiency and the electric self-consumption. The ORC can be switched-off or operated at partial load when solar and/or wind sources are significant. A multi-variable optimization has been carried out to find the proper size of the wind turbine and photovoltaic subsystems and to define the suitable operating strategy. To this purpose, several production wind turbines (1.0–60.0 kWel) and photovoltaic units (0.3–63.0 kWel) have been considered with the aim of finding the optimal trade-off between the maximum electric self-consumption and the minimum payback period and electric surplus. The multi-objective optimization suggests the integration of 12.6 kWel ORC with 10 kWel wind turbine and 6.3 kWel photovoltaic subsystem. The investigation demonstrates that the proposed multi-source integrated system offers a viable solution for smart-communities and distributed energy production with a significant improvement in the global system efficiency (+7.5%) and self-consumption (+15.0%) compared to the sole ORC apparatus.

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“…Work analysis of ORC systems is the subject of many papers. These analyses concern many aspects, including: the selection of suitable evaporation temperature, type of working fluid [1,2] or ORC systems connectivity with other energy systems [3,4].…”

Section: Introductionmentioning

confidence: 99%

Influence of the type of working fluid in the lower cycle and superheated steam parameters in the upper cycle on effectiveness of operation of binary power plant

Stachel

Wiśniewski

2015

Archives of Thermodynamics

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In the paper presented have been the results of the analysis of effectiveness of operation of binary power plant consisting of combined two Clausius-Rankine cycles, namely the binary cycle with water as a working fluid in the upper cycle and organic substance as a working fluid in the lower cycle, as well as a single fluid component power plant operating also in line with the C-R cycle for superheated steam, with water as a working fluid. The influence of the parameters of superheated steam in the upper cycle has been assessed as well as the type of working fluid in the lower cycle. The results of calculations have been referred to the single-cycle classical steam power plant operating at the same parameters of superheated steam and the same mass flow rate of water circulating in both cycles. On the basis of accomplished analysis it has been shown that the binary power plant shows a greater power with respect to the reference power plant.

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The influence of vapor superheating on the level of heat regeneration in a subcritical ORC coupled with gas power plant

Cited by 16 publications

References 2 publications

Biomass Exploitation in Efficient ORC Systems

Biomass Exploitation in Efficient ORC Systems

Techno-Economic Analysis of Biofuel, Solar and Wind Multi-Source Small-Scale CHP Systems

Influence of the type of working fluid in the lower cycle and superheated steam parameters in the upper cycle on effectiveness of operation of binary power plant

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