Investigation of parameters affecting Organic Rankine Cycle efficiency by using Taguchi and ANOVA methods

Bademlioglu, Ali Husnu; Canbolat, Ahmet Serhan; Yamankaradeni̇z, Nurettin; Kaynaklı, Ömer

doi:10.1016/j.applthermaleng.2018.09.032

Cited by 65 publications

(19 citation statements)

References 39 publications

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“…For a given level of significance α, F a can be obtained from the F distribution table; if F f > F α , the effect of this factor is significant [40][41][42].…”

Section: Analysis Methodsmentioning

confidence: 99%

Influence of the Skid Resistance of Ultrathin Wearing Course with Various Types of Asphalt Binders

Liu

Guo

Yang

et al. 2020

Advances in Materials Science and Engineering

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Ultrathin wearing course (UTWC) has been widely applied in both asphalt pavements preventive maintenance and functional overlay. This study’s objective is to evaluate the influence of different modified asphalt binders with warm mix additives on the skid resistance of UTWC and to reveal the attenuation law of skid resistance of UTWC. Three types of modified asphalt binders (Styrene-Butadiene-Styrene- (SBS-) modified asphalt, Acrylester Rubber- (AR-) modified asphalt, and SinoTPS-modified asphalt) and sasobit warm mix asphalt additive were selected to prepare asphalt mixtures. The Model Mobile Load Simulator 3 (MMLS3) was used to simulate repeated vehicle loading and abrasion. The British Pendulum Number (BPN) and Mean Texture Depth (MTD) were chosen to evaluate the skid resistance of the UTWC. The Analysis of Range (ANOR) and Analysis of Variance (ANOVA) were used to verify the significance of asphalt binder on the antiskid performance of the UTWC. ANOR and ANOVA show that the influence of different modified asphalt binders on the skid resistance of the UTWC is significant. The SinoTPS modified asphalt mixture can maintain high texture roughness before and after abrasion, providing excellent and durable skid resistance. The influence of the addition of a warm mixing additive on the skid resistance of UTWC is not significant, and changes in microtexture mainly reflect its impact on antiskid performance. The decay curve of three modified asphalt binders of the skid resistance of the UTWC can be well fitted into an exponential function. The conclusion will play an essential role in selecting the asphalt binder in a UTWC to improve the antiskid performance.

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“…For a given level of significance α, F a can be obtained from the F distribution table; if F f > F α , the effect of this factor is significant [40][41][42].…”

Section: Analysis Methodsmentioning

confidence: 99%

Influence of the Skid Resistance of Ultrathin Wearing Course with Various Types of Asphalt Binders

Liu

Guo

Yang

et al. 2020

Advances in Materials Science and Engineering

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“…[ 1 ] Bademlioglu et al provide a statistical analysis on system efficiency, using the Taguchi method. [ 28 ] In an ORC system, the main parameters affecting the design are choice of the working fluid, pinch point, superheating temperature, evaporator and condenser temperature, heat exchanger effectiveness, pump and turbine efficiency, installation, and running costs.…”

Section: Current Technologiesmentioning

confidence: 99%

Waste Heat to Power: Technologies, Current Applications, and Future Potential

et al. 2020

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Energy consumption, environmental impact, and sustainability have risen fast through the ranks, achieving the first places in driving investments, policies, and concerns of all countries at any developmental stage. Energy transformation, though, must cope with nonunitary efficiency of devices and processes, which results in a distributed production of waste heat. A reduction of emissions, implying a conversion of waste heat to more noble forms of energy and a concurrent increase in efficiency of the same devices and processes, is of paramount importance. In view of the enthalpy content and distribution of the different sources of waste heat, low‐grade/low‐enthalpy sources below 200 °C are considered the most fertile field for research and development, with an impressive industrial growth rate. Thermodynamic cycles and thermal conversion devices based on the most relevant physical effects are herein introduced and briefly described, including both solutions that already achieved industrial maturity and less developed systems and devices whose study is still in progress. A specific focus on three application domains, selected due to their economic relevance, is done: industrial processes for the vast energy and capital availability, automotive sector for its permeation, and wearable devices for the market size. Limits and opportunities are critically discussed.

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“…The ANOVA was applied to evaluate the importance of each factor. The ANOVA aims to estimate the seriousness of the goal variation caused by the variation of each factor, as observed from the results [28][29][30]. Three factors were analyzed by ANOVA to determine the influence of each factor on the experimental results.…”

Section: Analysis Of Variance (Anova)mentioning

confidence: 99%

Surface Quality Improvement in Machining an Aluminum Honeycomb by Ice Fixation

Wang

Gan

et al. 2020

Chin. J. Mech. Eng.

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A honeycomb structure is widely used in sandwich structure components in aeronautics and astronautics; however, machining is required to reveal some of its features. In honeycomb structures, deficiencies, such as burrs, edge subsiding, and cracking, can easily appear, owing to poor specific stiffness in the radial direction. Some effective fixation methods based on a filling principle have been applied by researchers, including approaches based on wax, polyethylene glycol, iron powder, and (especially) ice. However, few studies have addressed the optimization of the cutting parameters. This study focused on optimizing the cutting parameters to obtain a better surface roughness (calculated as a roughness average or R a ) and surface morphology in the machining of an aluminum alloy honeycomb by an ice fixation method. A Taguchi method and an analysis of variance were used to analyze the effects and contributions of spindle speed, cutting depth, and feed rate. The optimal cutting parameters were determined using the signal-to-noise ratio combined with the surface morphology. An F-value and P-value were calculated for the value of the R a , according to a "smaller is better" model. Additionally, the optimum cutting parameters for machining the aluminum honeycomb by ice fixation were found at different levels. The results of this study showed that the optimal parameters were a feed rate of 50 mm/min, cutting depth of 1.2 mm, and spindle speed of 4000 r/min. Feed rate was the most significant factor for minimizing R a and improving the surface morphology, followed by spindle speed. The cutting depth had little effect on R a and surface morphology. After optimization, the value of R a could reach 0.218 μm, and no surface morphology deterioration was observed in the verified experiment. Thus, this research proposes optimal parameters based on ice fixation for improving the surface quality.

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Investigation of parameters affecting Organic Rankine Cycle efficiency by using Taguchi and ANOVA methods

Cited by 65 publications

References 39 publications

Influence of the Skid Resistance of Ultrathin Wearing Course with Various Types of Asphalt Binders

Influence of the Skid Resistance of Ultrathin Wearing Course with Various Types of Asphalt Binders

Waste Heat to Power: Technologies, Current Applications, and Future Potential

Surface Quality Improvement in Machining an Aluminum Honeycomb by Ice Fixation

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