Numerical analysis and optimization design of fin-and-tube evaporator in organic Rankine cycle system for diesel engine waste heat recovery

Zhang, Wujie; Yang, Fubin; Zhang, Hongguang; Xu, Ping; Yan, Dong

doi:10.1016/j.ijheatmasstransfer.2021.121376

Cited by 11 publications

(4 citation statements)

References 35 publications

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“…Debido a la gran cantidad de parámetros que intervienen en el desempeño del ORC, diversas técnicas se han aplicado en años recientes para optimizar el rendimiento del ciclo. Muchas son las variables que intervienen en la eficacia del ORC, pero el componente fundamental del ciclo es el evaporador, pues determina la cantidad de energía que entra al sistema (Zhang et al, 2021). Dentro de los parámetros que más influencia poseen en el desempeño del evaporador, y por ende del ciclo, se encuentran las temperaturas de entrada y salida, y la presión de evaporación (Ping et al, 2022).…”

Section: Introductionunclassified

Diseño térmico, mecánico y simulación estructural de un evaporador del tipo coraza y tubos para aplicaciones de baja temperatura en un Ciclo Rankine Orgánico

Muro Teruel,

Ambríz Díaz,

Chávez López

et al. 2023

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El evaporador es el componente del ciclo Rankine orgánico (ORC) que aprovecha la energía térmica para activar el ciclo. Se muestra el procedimiento para el diseño térmico y mecánico de un evaporador de coraza y tubos de un ORC activado con una fuente de energía térmica de baja temperatura, tal es el caso del agua de un pozo geotérmico de 120 °C. La primera ley de la termodinámica y el método DMLT fueron empleados para el modelado térmico. A su vez se evalúa el desempeño estructural del diseño mediante simulación numérica. Los resultados muestran un evaporador de 50 tubos de cobre de 1”, que trabaja a una tasa de 206.7 kW y produce una potencia de 16.96 kW.

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Section: Introductionunclassified

Diseño térmico, mecánico y simulación estructural de un evaporador del tipo coraza y tubos para aplicaciones de baja temperatura en un Ciclo Rankine Orgánico

Muro Teruel,

Ambríz Díaz,

Chávez López

et al. 2023

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“…The evaporator's design and construction can significantly impact the system's size and overall performance. Therefore, optimising the evaporator's design parameters, such as the number of tubes and fins, tube diameter, and length, is essential to achieve optimal heat transfer rates and maximum energy efficiency [19].…”

Section: Introductionmentioning

confidence: 99%

Utilizing waste heat gasoline engine in the design and fabrication of a fin and tube evaporator for the Organic Rankine Cycle (ORC)

Martin

Hartono

Asrian

2023

Sinergi

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The excessive consumption of fossil fuels is causing environmental problems, which can be addressed by utilizing renewable energy sources such as hydro energy, biomass, solar heat, geothermal, and waste heat. In particular, the exhaust gas from gasoline engines presents an opportunity for energy recovery, as only 25% of the energy is utilized while the remaining 75% is wasted. A fin and tube type evaporator was designed, manufactured, and tested to utilize this exhaust gas in an Organic Rankine Cycle (ORC) system. The evaporator was designed with an outer tube diameter of 9.525 mm and a total tube length of 41.4 m, featuring 90 tubes and 135 fins with a total area of 14,325 m2. It achieved an average effectiveness of 94.33%. The results showed that the waste heat from the exhaust gas of a gasoline engine could be used as a source of energy in an ORC system with an efficiency of 2.13%. It results in 7.02 kJ/s of energy absorbed by the evaporator and a net power generated of 0.15 kJ/s. This research demonstrates the potential for utilizing waste heat from gasoline engines as an energy source to generate electricity.

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“…The COMSOL program is a simulation software that helps engineering, production and scientific research organizations manage physics-based modelling through verification and optimization of processes and devices. The platform enables users to create custom modelling workflows, making it easy to share data between multiple models, including electromagnetic, heat transfer, structural mechanics, fluid-flow, and more dec with this program, researchers usually see that fluid and heat transfer [16][17][18][19][20] analyses are performed. In the articles examined, it can be seen that the results of such studies are quite close to the real results.…”

Section: Introductionmentioning

confidence: 99%

Analysis of thermal barrier coated pistons in the COMSOL and the effects of their use with water + ethanol doped biodiesel

et al. 2022

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In this study, the thermal analysis of an aluminum piston coated with MgOZrO2 to create a thermal barrier with the COMSOL multiphysics program and the changes in exhaust gas temperature, fuel consumption, and engine torque values obtained as a result of engine test experiments were examined. For this purpose, the MgOZrO2 coated and uncoated piston engine was started with biodiesel and 5% water + 15% ethanol doped biodiesel fuel at engine speeds of 1000 rpm, 1500 rpm, 2000 rpm, and 2500 rpm. In the thermal analysis results obtained in the COMSOL, it was found that the temperature values increased in the upper regions of the coated pistons. Likewise, in engine experiments, increased exhaust gas temperature and engine torque showed a tendency to decrease fuel consumption values. It has been observed that the data obtained in the analysis in the COMSOL program are in parallel with the results of the engine experiments.

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Numerical analysis and optimization design of fin-and-tube evaporator in organic Rankine cycle system for diesel engine waste heat recovery

Cited by 11 publications

References 35 publications

Diseño térmico, mecánico y simulación estructural de un evaporador del tipo coraza y tubos para aplicaciones de baja temperatura en un Ciclo Rankine Orgánico

Diseño térmico, mecánico y simulación estructural de un evaporador del tipo coraza y tubos para aplicaciones de baja temperatura en un Ciclo Rankine Orgánico

Utilizing waste heat gasoline engine in the design and fabrication of a fin and tube evaporator for the Organic Rankine Cycle (ORC)

Analysis of thermal barrier coated pistons in the COMSOL and the effects of their use with water + ethanol doped biodiesel

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