Browsing Ingeniería Mecánica by Author "James Rivas, Arthur"

Now showing items 1-10 of 10

    • Airflow and insulation effects on simultaneous syngas and biochar production in a top-lit updraft biomass gasifier 

      James Rivas, Arthur; Yuan, Wenqiao; Wang, Donghai; Boyette, Michael D. (2017-10-11)
      The objective of this study was to understand the effect of airflow and insulation on syngas and biochar generations of rice hulls and woodchips in a top-lit updraft gasifier. Biochar yield decreased with increasing airflow. ...

    • Biomass carbonization - Production and characterization of biochar from rice husks 

      Bethancourt, Geomara; James Rivas, Arthur; Villarreal, José E.; Marín-Calvo, Nacarí (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-12-30)
      El presente trabajo consistió en producir y caracterizar carbón vegetal a partir de la cascarilla de arroz. La cascarilla de arroz fue generada en un reactor de flujo ascendente tipo Top-lit. Este proceso fue favorable ...

    • Characterization of Biochar from Rice Hulls and Wood Chips Produced in a Top-Lit Updraft Biomass Gasifier 

      James Rivas, Arthur; Yuan, Wenqiao; Boyette, Michael D.; Wang, Donghai; Kumar, Ajay (2016-01-01)
      The objective of this study was to characterize biochar produced from rice hulls and wood chips in a top-lit updraft gasifier. Biochar from four airflows (8, 12, 16, or 20 L min-1) and two insulation conditions (not insulated ...

    • Computational Fluid Dynamics Simulation of Coal Gasification in a Circulating Fluidized Bed Reactor 

      Escala, Manuel; James Rivas, Arthur (2019-10-09)
      One of the applications of coal as a fuel is the production of gas through circulating fluidized bed technology. The modeling of these systems allows verifying and optimizing the design and operation parameters of gasifiers ...

    • Development of a Prototype for Solar Radiation Exploitation on Galvanized Metal Roofs in Panama 

      Labastid C., Dayberto; Bolobosky, Marco; James Rivas, Arthur; Mogollón, Luis (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-10-09)
      The solar energy is an inexhaustible resource available in many areas of our planet. The objective of this investigation is to develop a prototype that takes advantage of the incident solar energy on metal roofs of the ...

    • The Effect of Biomass Physical Properties on Top-Lit Updraft Gasification of Woodchips 

      James Rivas, Arthur; Yuan, Wenqiao; Boyette 2, Michael D. (2016-04-12)
      The performance of a top-lit updraft gasifier affected by biomass (pine wood) particle size, moisture content and compactness was studied in terms of the biochar yield, biomass burning rate, syngas composition and tar ...

    • The Effect of Gasification Conditions on the Surface Properties of Biochar Produced in a Top-Lit Updraft Gasifier 

      James Rivas, Arthur; Yuan, Wenqiao; Wang, Duo; Wang, Donghai; Kumar, Ajay (2020-01-19)
      The effect of airflow rate, biomass moisture content, particle size, and compactness on the surface properties of biochar produced in a top-lit updraft gasifier was investigated. Pine woodchips were studied as the feedstock. ...

    • Introduction to the Application of Phase Change Materials under Tropical Climate of Panama 

      Harris, Itamar; Ortega Del Rosario, Maria De Los Á.; James Rivas, Arthur; Bruneau, Denis (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2016-10-09)
      Phase change materials (PCM) are materials with the ability to store a large amount of energy (latent heat) during their change from solid to a liquid phase. This takes place at a certain melting temperature. Amid the ...

    • OTEC Alternative for the Electric Power Generation in Panama 

      López Tenorio, Guillermo; James Rivas, Arthur; De Los Angeles Ortega, Maria; Jurado, Francisco (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-12-30)
      This document presents a qualitative analysis of surface temperatures of the oceanic territory of Panama. These temperatures represent an indication of the potential of the thermal resource in the oceanic territory of ...

    • Water Quality Evaluation of the Cabra River Using Biological Indicators 

      Ortega Baso, Nimia I; Cedeño, Eliezer; Espino, Kleveer; James Rivas, Arthur; Ulises Jiménez, José (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-10-09)
      The objective of this study was to evaluate the water quality of the Cabra River through the use of aquatic macroinvertebrates implementing the EPT and BMWP/Pan indexes. The diversity of orders and families of macroinvertebrates ...