Impact of heat transfer on the performance of micro gas turbines

Verstraete, Dries; Bowkett, Carlos

doi:10.1016/j.apenergy.2014.10.075

Cited by 39 publications

(11 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Propellers are the predominant propulsion type utilised by UAVs, especially in the case of smaller unmanned systems (1) . As the efficiency of the powertrain and propeller are crucial to obtaining acceptable performance, a great deal of research is focused on more efficient powertrain technology (2)(3)(4)(5) . However, most small UAV platforms used fixed pitch off-the-shelf propellers (1,6) .…”

Section: Introductionmentioning

confidence: 99%

Blade element momentum theory extended to model low Reynolds number propeller performance

MacNeill

Verstraete

2017

Aeronaut. j.

View full text Add to dashboard Cite

Propellers are the predominant propulsion source for small unmanned aerial vehicles. At low advance ratios, large sections of the propeller blade can be stalled, and the Reynolds number faced by each blade can be low. This leads to difficulties in modelling propeller performance, as the aerodynamic models coupled with blade element methods usually only provide aerodynamic data for an assumed aerofoil section, for a small angle-of-attack range and for a single Reynolds number, while rotational effects are often ignored. This is specifically important at low advance ratios, and a consistent evaluation of the applicability of various methods to improve aerodynamic modelling is not available. To provide a systematic appraisal, three-dimensional (3D) scanning is used to obtain the aerofoil sections that make up a propeller blade. An aerodynamic database is formed using each extracted aerofoil section, across a wide range of angles of attack and Reynolds numbers. These databases are then modified to include the effects of rotation. When compared with experimental results, significant improvement in modelling accuracy is shown at low advance ratios relative to a generic blade element-momentum model, particularly for smaller propellers. Notably, when considering small propeller performance, efficiency modelling is improved from within 30% relative to experimental data to within 5% with the use of the extended blade element momentum theory method. The results show that combining Viterna and Corrigan flat plate theory with the Corrigan and Schillings stall delay model consistently yields the closest match with experimental data.

show abstract

Section: Introductionmentioning

confidence: 99%

Blade element momentum theory extended to model low Reynolds number propeller performance

MacNeill

Verstraete

2017

Aeronaut. j.

View full text Add to dashboard Cite

show abstract

“…Furthermore, during the design stage, the influence of the ambient temperature on the performance of the CCGT plant to be considered. The heating temperature of the fuel gas results in a higher thermal efficiency of the GT due to the reduced fuel consumption [23,26,27]. Thamir and Rahman [8] examined thermodynamic analysis of the GT system.…”

Section: Introductionmentioning

confidence: 99%

Statistical analysis and optimum performance of the gas turbine power plant

Ibrahim¹,

Rahman²,

Kamil³

et al. 2016

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

The statistical analyses of the gas turbine power plant are presented in this paper. A novel approach for analysing gas turbine operation and performance is developed utilizing statistical modelling technology, specifically response surface methodology (RSM) which was based on the central composite design (CCD) applied. The proposed correlations have a remarkably satisfactory performance for all simulation data, where the determination coefficient (R 2 ) about 0.985. Moreover, the newly developed correlations were validated with the real data from the gas turbine of MARAFIQ CCGT power plant. Moreover, the newly developed correlations were validated with the real data from the GT units in the MARAFIQ CCGT power plant. The error analysis was applying to approximation the error (1.123% of the GT plants). From applied the ANFIS technique, the optimum thermal efficiency was about 56% with the effect of the pressure ratio and compressor isentropic efficiency.

show abstract

“…Frameworks that utilise a similar approach to TERA have 147 also been used successfully by other researchers in the field for novel technology assessments (Marinai,L., et.al. 2004;Alexiou, et al, 2012;Hu, et al, 2012;Verstraete, et al, 2015). …”

mentioning

confidence: 99%

Techno-economic viability assessments of greener propulsion technology under potential environmental regulatory policy scenarios

et al. 2015

View full text Add to dashboard Cite

PostprintThis is the accepted version of a paper published in Applied Energy. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination. Citation for the original published paper (version of record):Nalianda, D., Kyprianidis, K., Sethi, V., Singh, R. (2015) Techno-economic viability assessments of greener propulsion technology under potential environmental regulatory policy scenarios.Applied Energy, http://dx.doi.org/10.1016/j.apenergy. 2015.07.017 Access to the published version may require subscription. N.B. When citing this work, cite the original published paper. Permanent link to this version:http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-28786 59The aviation sector has played a significant role in shaping the world into what it is today. The rapid 60 growth of global economies and the corresponding sharp rise in the number of people now wanting to 61 travel on business and for pleasure, has largely been responsible for the development of this industry. 62However the significantly large increase in air passengers over the years has led to an increase in air 63 traffic and a corresponding rise in fuel consumption, aviation emissions and noise. 64Over the years, the industry has consistently invested in improving technology and introducing it into 65 commercial applications, with the aim to always remain profitable. With fuel expenses being a 66 significant part of an airline's operating cost, the core focus of technology development in the past has 67 been to constantly improve fuel economy. This has been accomplished whilst actively striving to lower 68 costs (production and maintenance) reduce weight, maintain Landing and Take-Off (LTO) cycle noise 69 and NOx within certification limits and improve safety and reliability. However, with aviation 70 emissions now becoming a cause for growing global concern and various emission mitigation policies 71 coming into focus, the industry is actively pursuing even "greener" and quieter solutions for the future. 95The primary objective of the current work is to specifically assess economic viability and the 96 boundaries within which a particular energy efficiency improvement technology is financially 97 sustainable. In more detail, the work introduces an integrated methodology that may be used to 98 assess economic viability by demonstrating the sensitivity of operating cost to uncertain acquisition 99 prices and maintenance costs of futuristic technology. 100The focus of the work is to combine energy efficiency technology assessments with concepts of Net 101Present Value (NPV) and Internal Rate of Return (IRR) within an investment cost analysis approach. 102The study will first utilise and further develop a Techno-economic Environmental Risk Analysis 103(TERA) framework to produce a set of assessments (Kyprianidis, et al., 2008; Pascovici, D.S, 2008; 104 Kyprianidis, 2010). These assessments will compare a novel technology with competing conventional 105 solutions and establish its benefits in term...

show abstract

Impact of heat transfer on the performance of micro gas turbines

Cited by 39 publications

References 34 publications

Blade element momentum theory extended to model low Reynolds number propeller performance

Blade element momentum theory extended to model low Reynolds number propeller performance

Statistical analysis and optimum performance of the gas turbine power plant

Techno-economic viability assessments of greener propulsion technology under potential environmental regulatory policy scenarios

Contact Info

Product

Resources

About