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Design and simulation of power mems microcombustor / Mohammad Zulfikar Bin Ishak

Design and simulation of power mems microcombustor_Mohammad Zulfikar Bin Ishak _E3_ 2009_875000079_00003079822_NI
Kajian yang dilakukan adalah bertujuan untuk membentuk dan membuat simulasi terhadap kebuk pembakaran bersaiz mikro bagi penjanaan kuasa mudah alih dengan memanipulasikan tenaga yang terkandung dalam bahan bakar hidrokarbon. Tenaga elektrik dapat dihasilkan dengan menggunakan kaedah gabungan pembakaran bermangkin dan bahan termoelektrik. Pelbagai dimensi kebuk pembakaran mikro dianalisis secara matematikal dengan tujuan untuk mengoptimumkan kecekapannya. Model kebuk pembakaran mikro juga dibina dengan menggunakan CoventorWare MemCFD analyzer untuk mendapatkan butir-butir halaju reaktan dan taburan suhu di dalam kebuk pembakaran tersebut. Daripada analisis secara matematikal, didapati bahawa kebuk pembakaran mikro mengalami kehilangan haba ke persekitaran secara konveksi dan analisis menggunakan CoventorWare menunjukkan taburan halaju bagi reaktan adalah tidak seragam di sepanjang saluran pembakaran. Untuk mengatasi masalah ini, penebat harus digunakan untuk mengurangkan kehilangan haba secara konveksi dan tabir logam halus (pencampur) mesti diletakkan di dalam kebuk pembakaran agar dapat menghasilkan taburan halaju reaktan yang seragam. Kesemua parameter dan pertimbangan rekabentuk dibincangkan dengan terperinci untuk kajian secara eksperimen pada akan datang. _____________________________________________________________________________________ The purpose of this study is to design and simulate a microscale combustor chamber for portable power generation by manipulating the energy stored in the hydrocarbons fuel. Electricity is generated by integrating the catalytic combustion with thermoelectric material. Various microcombustor dimensions were studied in order to optimize the combustion chamber efficiency. The microcmbustor model are developed and analyzed by using CoventorWare MemCFD analyzer to determine the velocity of reactant and thermal profile inside the combustion chamber. From analytical analysis, the microcombustor exhibit high heat loss by convection to the surrounding and analysis using Coventorware shows there are inconsistent velocity distribution across the combustion channel. To overcome these problems, thermal insulator is promoted to insulate the combustion chamber from heat losses by convection and fine metal screen (mixer) must be placed in the combustion chamber to induce uniform reactant flow through the microchannel. All the parameters and design considerations that influence the performance of the microcombustor are also discussed in detail for future experimental analysis.
Contributor(s):
Mohammad Zulfikar Ishak - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875000079
Barcode : 00003079822
Language:
English
Subject Keywords:
design and simulate a microscale combustor chamber for portable power generation; CoventorWare MemCFD analyzer; thermal insulator
First presented to the public:
1/4/2009
Original Publication Date:
2/27/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 96
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-02-27 15:28:18.821
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Nor Hayati Ismail

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Design and simulation of power mems microcombustor / Mohammad Zulfikar Bin Ishak1 2018-02-27 15:28:18.821