Rotational Experiment of MEMS Turbine for Miniature Organic Rankin Cycle Generator

Author(s):  
Kobayashi Yuya ◽  
Niki Yuya ◽  
Takeda Kenji ◽  
Aibara Megumi ◽  
Kaneko Minami ◽  
...  
Keyword(s):  
Author(s):  
Tang Yang ◽  
Yangping Zhou ◽  
Zhiwei Zhou ◽  
Zhang Dabin

HTR engineering simulator can be achieved by embedding THERMIX code into the vPower simulation environment. The engineering simulator consists of double-module reactors, two steam generators and entire secondary loop system for power generation with a water-steam Rankin cycle. The engineering simulator can be applied to simulate the steady-state operation, but also transient and accident state of HTR-PM. This paper analyzes the trends of reactor power, helium flow, steam generator inlet parameters, turbine inlet parameters and other key parameters under accident conditions, as well as the mutual influence between the two module reactors during accident process. Current simulation results are in good agreement with the design values and safety analysis results of HTR-PM.


Revista EIA ◽  
2018 ◽  
Author(s):  
Ilba Geonine Cuadrado Peña ◽  
Andrés Felipe Colorado Granda ◽  
Juan Carlos Cobos Gómez ◽  
Juan Carlos Vásquez Rueda

Se evalúa la factibilidad técnica y económica del uso de un ciclo binario del tipo ORC para la generación de electricidad, a partir del aprovechamiento del recurso geotérmico de baja temperatura disponible en varios campos de petróleo en Colombia. Las temperaturas del agua obtenida como subproducto durante la extracción de crudo son 118 ºC en boca de pozo y 82 ºC en etapas de disposición, con caudales de hasta 2,38 m3/s. Para incrementar la eficiencia del ciclo convencional, fueron evaluadas alternativas de calentamiento de la corriente del lado de alta temperatura y de enfriamiento del lado de baja temperatura. Se encontró que un equipo comercial ORC de 280 kW  produciría en uno de los campos 1.165,1 MWh anuales  con un costo de generación de 0,102 U$/KWh. Los resultados de este estudio no permiten la implementación de equipos ORC porque se requieren mayores temperaturas que garanticen la factibilidad técnica.Abstract: These paper analyze the technical and economic feasibility of generating electricity from low temperature geothermal resources available in oil oilfields in Colombia using binary ORC technology. The water obtained as a byproduct during oil extraction has 118°C temperatures at wellhead and 80ºC on average in disposal stages; the water flow rates reach values of 2.38 m3/s. Were studied to improve the efficiency, technical options for additional heating and cooling of hot and cold streams.  According to the results found, 1.165,1 MWh energy production by year and 0,102 U$/KWh in unitary generation cost is for the 280 kW commercial ORC machine. According to the experience developed in this study results do not permit ORC immediate implementation because are necessary higher temperatures to guarantee technical feasibility.Sumário: A viabilidade técnica e econômica da utilização de um ciclo ORC binário para geração de eletricidade a partir da utilização de recursos geotérmicos de baixa temperatura disponíveis em vários campos de petróleo na Colômbia é avaliada. As temperaturas da água obtida como um subproduto durante a extração de petróleo cru são 118 ºC na boca de poço e 82 ºC em fases de distribuição, com vazões de até 2,38 m3/s. Para aumentar a eficiência do ciclo convencional, foram avaliadas (várias) opções de aquecimento da corrente de alta temperatura e de esfriamento do lado de baixa temperatura. Verificou-se que um equipamento comercial ORC de 280 kW poderia gerar em um dos campos 1165,1 MWh anuais a um custo de 0,102 U$/kWh. Estes resultados não permitem a implementação de equipamentos ORC porque precisam-se temperaturas mais altas para assegurar a viabilidade técnica.


2017 ◽  
Vol 2017 (0) ◽  
pp. S0510102
Author(s):  
Takashi HORINO ◽  
Chayadit PUMANERATKUL ◽  
Kyosuke FUJITA ◽  
Haruhiko YAMASAKI ◽  
Hiroshi YAMAGUCHI

Author(s):  
Qiang Gao ◽  
Yangping Zhou ◽  
Zhiwei Zhou ◽  
Zhe Sui ◽  
Yuanle Ma ◽  
...  

This paper describes the development of a compact engineering simulator of Pebble-bed Modular High Temperature Gas-cooled Reactor (HTR-PM) by embedding THERMIX code into the vPower simulation environment. The compact engineering simulator consists of modules for two reactors, two steam generators and entire secondary loop system for power generation with a water-steam Rankin cycle. Two THERMIX modules are employed to simulate the two primary loops corresponding to the two reactors in the HTR-PM respectively. Then, the vPower synchronizes the two THERMIX modules in executing simulation to such two reactor module-structures of HTR-PM. The simulation modules for secondary loop and human machine interface are mainly developed with intrinsic models of vPower simulation platform. Current simulation results are in good agreement with the design values and safety analysis results of HTR-PM. The compact HTR-PM engineering simulator will be improved and validated for safe analysis, procedure development and design change verification.


Tehnika ◽  
2018 ◽  
Vol 73 (3) ◽  
pp. 373-380
Author(s):  
Nurdin Ćehajić ◽  
Sandira Eljšan

2015 ◽  
Vol 2015.68 (0) ◽  
pp. 257-258
Author(s):  
Tomoyuki YOKOYAMA ◽  
Tomohiko YAMAGUCHI ◽  
Souichi SASAKI ◽  
Hidejiro MORITAKA ◽  
Kuniyasu KANEMARU ◽  
...  

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