Optimal pressure drop ratio for micro recuperators in small sized gas turbines

Stevens, Tine; Baelmans, Martine

doi:10.1016/j.applthermaleng.2008.01.018

Cited by 24 publications

(14 citation statements)

References 9 publications

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“…Stevens and Baelmans [27] found that for maximum cycle efficiency, the cold and hot side pressure drops of a micro-recuperator used in a gas turbine cycle are uniquely connected, since their ratio depends primarily on the compressor pressure ratio. Stevens et al [26] also found that the recuperator effectiveness should be as high as possible and that the pressure drop should be preferably located at the cold side of the recuperator.…”

Section: Optimisation Results and Influencing Factorsmentioning

confidence: 99%

“…Stevens et al [26] and Stevens and Baelmans [27] stated that a recuperator is often used to improve the overall cycle efficiency of a standard gas turbine and that a high heat exchanger effectiveness and low pressure drop are required to achieve maximum cycle efficiency.…”

Section: Optimisation Results and Influencing Factorsmentioning

confidence: 99%

“…These equations were also given by Jubeh [11] and Bejan [8]. Equations (27) and (28) are formulated in terms of the pressures and temperatures, which could be described by the isentropic efficiencies. The definitions of these efficiencies are commonly available from Weston [123], Dixon [124] and Haugwitz In this paper, the modelling of radial flow turbines are discussed in more detail since it is mostly used in small-scale power cycles.…”

Section: Compressor and Turbinementioning

confidence: 99%

“…(27). The compressor pressure ratio, mass flow rate and isentropic efficiencies are shown on a compressor map, given by the compressor manufacturer.…”

Section: Compressormentioning

confidence: 99%

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A review on the thermodynamic optimisation and modelling of the solar thermal Brayton cycle

Roux

Bello‐Ochende

Meyer

2013

Renewable and Sustainable Energy Reviews

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Many studies have been published on the performance and optimisation of the Brayton cycle and solar thermal Brayton cycle showing the potential, merits and challenges of this technology. Solar thermal Brayton systems have potential to be used as power plants in many sun-drenched countries. It can be very competitive in terms of efficiency, cost and environmental impact. When designing a system such as a recuperative Brayton cycle there is always a compromise between allowing effective heat transfer and keeping pressure losses in components small. The high temperatures required in especially the receiver of the system presents a challenge in terms of irreversibilities due to heat loss. In this paper, the authors recommend the use of the total entropy generation minimisation method. This method can be applied for the modelling of a system and can serve as validation when compared with first-law modelling. The authors review various modelling perspectives required to develop an objective function for solar thermal power optimisation, including modelling of the sun as an exergy source, the Gouy-Stodola theorem and turbine modelling.With recommendations, the authors of this paper wish to clarify and simplify the optimisation and modelling of the solar thermal Brayton cycle for future work. The work is applicable to solar thermal studies in general but focuses on the small-scale recuperated solar thermal Brayton cycle.2

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Section: Optimisation Results and Influencing Factorsmentioning

confidence: 99%

Section: Optimisation Results and Influencing Factorsmentioning

confidence: 99%

Section: Compressor and Turbinementioning

confidence: 99%

“…(27). The compressor pressure ratio, mass flow rate and isentropic efficiencies are shown on a compressor map, given by the compressor manufacturer.…”

Section: Compressormentioning

confidence: 99%

See 2 more Smart Citations

A review on the thermodynamic optimisation and modelling of the solar thermal Brayton cycle

Roux

Bello‐Ochende

Meyer

2013

Renewable and Sustainable Energy Reviews

View full text Add to dashboard Cite

show abstract

“…Following a review of prior recuperator art; Micro channel [4] [5], Stamp and folded [6], Offset-strip-fin [7], Corrugated plate fin -RSAB recuperator [8] [9], Annular -Capstone [10], Swiss roll [11] [12], Rolls-Royce spiral recuperator [13] [14], ACTE spiral recuperator [15] [14] and speculative investigation into alternative recuperator proposals [16] a coiled pipe-in-pipe recuperator was selected for further investigation.…”

Section: Introductionmentioning

confidence: 99%