Wasinarom, Kittipass

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Wasinarom, Kittipass
Alternative Name
Wasinarom, K.
Main Affiliation
Email
kittipass.wa@kmitl.ac.th

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    Item type:Publication,
    Formation of multiple combustion fronts in an imbert downdraft gasification reactor
    (2021-09-10)
    Wasinarom, Kittipass
    ;
    Sungworagarn, Sarawut
    ;
    Sathitruangsak, Prasan
    ;
    Onthong, Kasemsil
    The experimental study of downdraft gasification was performed in this paper. The operation which led to the formation of the second combustion front was pointed out. In this situation, both combustion fronts will lose their intensity and finally be extinguished. The operation was unintentionally stopped. It was revealed that the combustion front propagated upward in the reactor after starting the test. While it was about to reach the air inlet nozzle, the second combustion front was detected by an abrupt temperature rise of the thermocouple above the air supply nozzle. After the formation of the second combustion front, both fronts started to lose their intensity which indicated by the decrease in temperature corresponding with their locations. It was possible that the second combustion front would dilute the oxygen concentration supplied to the first combustion front. The decreasing temperature of the first combustion front reduced the heat transfer rate to the second combustion front. Finally, both combustion fronts were extinguished. The operation was unintentionally stopped.
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    Item type:Publication,
    CFD based Improvement of Thai Irrigation Pump
    (2020-01-01)
    Wasinarom, Kittipass
    ;
    Boonchauy, Dachdanai
    ;
    Charoensuk, Jarruwat
    Evaluation phase which was partial fulfilment of the beginning phase of "Development of Performance test rig and Efficiency improvement of impeller in Thai irrigation pump project" is presented in this paper. Overall flow field in the pump system that consisted of inlet, impeller and stator vane of the available pump was analyzed using commercial Computational Fluid Dynamics (CFD) code. The goal of this investigation is to obtain more understanding of energy dissipation which results from shear stress that developed within the flow field in each section of the pump. The improvement measure is then conducted with the concern of manufacturing difficulties. High dissipation flow structure was observed around the impeller outlet. Jet-wake and recirculation flow were observed. The first improvement measure was conducted by adding the bluff body in the flow channel to alleviate jet-wake structure and delay flow separation. After the implementation of the optimized bluff body around the impeller exit, CFD results indicated around 3-8% improvement compared with the CFD results of the available pump for the entire range of operating conditions.
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    Item type:Publication,
    Numerical simulation of porous media combustion for high temperature heat exchanger
    (2018-08-14)
    Iamsakulpanich, Panu
    ;
    Wasinarom, Kittipass
    ;
    Sesuk, Thanathon
    ;
    Charoensuk, Jarruwat
    ;
    Hanamura, Katsunori
    The purpose of this work is developing the numerical 1D model of porous media combustion for investigating porous media burner systems. The software is used to solve energy, mass transfer and chemical reaction equation of the combustion. The operating condition and property parameters, which mainly affect the functions and quality of the industrial burner design, such as the inlet velocity of the reactants, the equivalence ratio, the extinction coefficient and the thermal conductivity of porous media, will be investigated and validated with experimental data. For developing the procedure of experiment, three diameter sizes of porous media materials (5 mm, 10 mm, and 15 mm.) were used. As a result, the developed model will be used as a tool to explore temperature distribution of heat exchange to improve thermal performance and overall efficiency system. Moreover, this knowledge can be applied to design porous media burner systems for uniform temperature distribution operation.
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