Search results for "performance coefficient"

showing 3 items of 3 documents

Constructal law optimization of a boiler

2017

The paper aims at the optimization of the design of a biomass boiler under the inspiration of the Constructal Law by Bejan. The boiler is of the smoke tubes typology, fuel being biomass pellets. The smoke tubes are 16 and are placed in a staggered configuration. A model is built in MATLAB environment, based on empirical correlations and the mean log temperature methodology. The analysis is based on the development of a wide parametric analysis that involves variations of diameters, numbers and positioning of the tubes. Results are based on the concept of the overall performance coefficient methodology and investigate both the pressure drops variation and the thermal power generated in the d…

Fluid Flow and Transfer ProcessesConstructal law020209 energyMechanical EngineeringSettore ING-IND/10 - Fisica Tecnica Industriale0202 electrical engineering electronic engineering information engineeringBoiler (power generation)Mechanical engineeringEnvironmental science02 engineering and technologyCondensed Matter PhysicsBoiler Constructal Law Modelling Parametric Analysis Overall Performance CoefficientInternational Journal of Heat and Technology
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A Constructal Law optimization of a boiler inspired by Life Cycle thinking

2018

Abstract The aim of the paper is to explore how design optimization contributes to a technology's ecological evolution. The article develops this concept through an application of Constructal Law, used to account for the “evolution” of technologies design (configuration, shape, structure, pattern, rhythm), and Life Cycle Assessment (LCA), used for quantifying the environmental impacts of the design choices. The combination of both methods assesses how technology evolution affects the environment during its life, extending the concept of evolution of design. The study is applied to a case study of a real biomass boiler. The study analyses basic case and a series of alternative scenarios opti…

Fluid Flow and Transfer ProcessesGlobal energyConstructal lawBiomass boilerBoilerSettore ING-IND/11 - Fisica Tecnica AmbientaleComputer sciencebusiness.industry020209 energyBoiler (power generation)Technological evolution02 engineering and technology021001 nanoscience & nanotechnologyIndustrial engineeringOverall Performance CoefficientLife cycle thinkingLife cycle assessment0202 electrical engineering electronic engineering information engineeringConstructal Law0210 nano-technologybusinessLife-cycle assessmentThermal energy
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The Experimental Study of Heat Waste Conversion into Useful Electric Power

2009

This paper presents the practical results ofthe design solutions, executing and experimentaltesting of a prototype model of o thermoelectricgenerator, based on the conversion of residualthermical energy into electric power, by improving theSeebeck effect. To this purpose, high performancethermoelectric modules have been used, taken from therecent production of the American Corporation Hi-ZTechnology. The prototype thermoelectric generatorbuilt for a demonstrative purposes has got the lowefficiency category. The results taken from the testsand experimental measurements have showntheimportance of the constructive solution of materialsand technologies that have been used. These resultsdirect t…

recoveryreconversion.Seebeck Coefficientthermoelectric modulelcsh:Electrical engineering. Electronics. Nuclear engineeringfigure of meritlcsh:TK1-9971performance coefficientJournal of Electrical and Electronics Engineering
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