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Tony Arts - One of the best experts on this subject based on the ideXlab platform.

  • Time-Averaged and Time-Resolved Heat Flux Measurements on a Turbine Stator Blade Using Two-Layered Thin-Film Gauges
    Journal of Turbomachinery, 2004
    Co-Authors: V. Iliopoulou, R. Dénos, N. Billiard, Tony Arts
    Abstract:

    This paper describes the steps undertaken to measure heat flux in a turbine tested in a blowdown windtunnel when using a two-layered thin film gauge array. The sensor consists of a nickel thermoresistor deposited onto a flexible polyamide sheet that can be easily bounded on a substrate using double sided Adhesive. The assembly constitutes a two-layered system. First, a numerical algorithm is proposed to extract the wall heat flux from the surface temperature history measured by the thin film gauge. It is very flexible and handles multilayered systems. Then, an original procedure is proposed to determine the thermal properties and the thickness of the different layers. It uses the above numerical algorithm coupled with a minimization routine. The repeatability of the procedure is assessed. Finally, tests are processed according to the proposed method. The results are successfully compared with measurements performed with single-layered thin film gauges.

  • Time-Averaged and Time-Resolved Heat Flux Measurements on a Turbine Stator Blade Using Two-Layered Thin-Film Gauges
    Volume 2: Turbo Expo 2004, 2004
    Co-Authors: V. Iliopoulou, R. Dénos, N. Billiard, Tony Arts
    Abstract:

    This paper describes the steps undertaken to measure heat flux in a turbine tested in a blowdown windtunnel when using a two-layered thin film gauge array. The sensor consists of a nickel thermo resistor deposited onto a flexible polymide sheet that can be easily bounded on a substrate using double sided Adhesive. The assembly constitutes a two-layered system. First, a numerical algorithm is proposed to extract the wall heat flux from the surface temperature history measured by the thin film gauge. It is very flexible and handles multi-layered systems. Then, an original procedure is proposed to determine the thermal properties and the thickness of the different layers. It uses the above numerical algorithm coupled with a minimization routine. The repeatability of the procedure is assessed. Finally, tests are processed according to the proposed method. The results are successfully compared with measurements performed with single-layered thin film gauges.Copyright © 2004 by ASME

V. Iliopoulou - One of the best experts on this subject based on the ideXlab platform.

  • Time-Averaged and Time-Resolved Heat Flux Measurements on a Turbine Stator Blade Using Two-Layered Thin-Film Gauges
    Journal of Turbomachinery, 2004
    Co-Authors: V. Iliopoulou, R. Dénos, N. Billiard, Tony Arts
    Abstract:

    This paper describes the steps undertaken to measure heat flux in a turbine tested in a blowdown windtunnel when using a two-layered thin film gauge array. The sensor consists of a nickel thermoresistor deposited onto a flexible polyamide sheet that can be easily bounded on a substrate using double sided Adhesive. The assembly constitutes a two-layered system. First, a numerical algorithm is proposed to extract the wall heat flux from the surface temperature history measured by the thin film gauge. It is very flexible and handles multilayered systems. Then, an original procedure is proposed to determine the thermal properties and the thickness of the different layers. It uses the above numerical algorithm coupled with a minimization routine. The repeatability of the procedure is assessed. Finally, tests are processed according to the proposed method. The results are successfully compared with measurements performed with single-layered thin film gauges.

  • Time-Averaged and Time-Resolved Heat Flux Measurements on a Turbine Stator Blade Using Two-Layered Thin-Film Gauges
    Volume 2: Turbo Expo 2004, 2004
    Co-Authors: V. Iliopoulou, R. Dénos, N. Billiard, Tony Arts
    Abstract:

    This paper describes the steps undertaken to measure heat flux in a turbine tested in a blowdown windtunnel when using a two-layered thin film gauge array. The sensor consists of a nickel thermo resistor deposited onto a flexible polymide sheet that can be easily bounded on a substrate using double sided Adhesive. The assembly constitutes a two-layered system. First, a numerical algorithm is proposed to extract the wall heat flux from the surface temperature history measured by the thin film gauge. It is very flexible and handles multi-layered systems. Then, an original procedure is proposed to determine the thermal properties and the thickness of the different layers. It uses the above numerical algorithm coupled with a minimization routine. The repeatability of the procedure is assessed. Finally, tests are processed according to the proposed method. The results are successfully compared with measurements performed with single-layered thin film gauges.Copyright © 2004 by ASME

R. Dénos - One of the best experts on this subject based on the ideXlab platform.

  • Time-Averaged and Time-Resolved Heat Flux Measurements on a Turbine Stator Blade Using Two-Layered Thin-Film Gauges
    Journal of Turbomachinery, 2004
    Co-Authors: V. Iliopoulou, R. Dénos, N. Billiard, Tony Arts
    Abstract:

    This paper describes the steps undertaken to measure heat flux in a turbine tested in a blowdown windtunnel when using a two-layered thin film gauge array. The sensor consists of a nickel thermoresistor deposited onto a flexible polyamide sheet that can be easily bounded on a substrate using double sided Adhesive. The assembly constitutes a two-layered system. First, a numerical algorithm is proposed to extract the wall heat flux from the surface temperature history measured by the thin film gauge. It is very flexible and handles multilayered systems. Then, an original procedure is proposed to determine the thermal properties and the thickness of the different layers. It uses the above numerical algorithm coupled with a minimization routine. The repeatability of the procedure is assessed. Finally, tests are processed according to the proposed method. The results are successfully compared with measurements performed with single-layered thin film gauges.

  • Time-Averaged and Time-Resolved Heat Flux Measurements on a Turbine Stator Blade Using Two-Layered Thin-Film Gauges
    Volume 2: Turbo Expo 2004, 2004
    Co-Authors: V. Iliopoulou, R. Dénos, N. Billiard, Tony Arts
    Abstract:

    This paper describes the steps undertaken to measure heat flux in a turbine tested in a blowdown windtunnel when using a two-layered thin film gauge array. The sensor consists of a nickel thermo resistor deposited onto a flexible polymide sheet that can be easily bounded on a substrate using double sided Adhesive. The assembly constitutes a two-layered system. First, a numerical algorithm is proposed to extract the wall heat flux from the surface temperature history measured by the thin film gauge. It is very flexible and handles multi-layered systems. Then, an original procedure is proposed to determine the thermal properties and the thickness of the different layers. It uses the above numerical algorithm coupled with a minimization routine. The repeatability of the procedure is assessed. Finally, tests are processed according to the proposed method. The results are successfully compared with measurements performed with single-layered thin film gauges.Copyright © 2004 by ASME

N. Billiard - One of the best experts on this subject based on the ideXlab platform.

  • Time-Averaged and Time-Resolved Heat Flux Measurements on a Turbine Stator Blade Using Two-Layered Thin-Film Gauges
    Journal of Turbomachinery, 2004
    Co-Authors: V. Iliopoulou, R. Dénos, N. Billiard, Tony Arts
    Abstract:

    This paper describes the steps undertaken to measure heat flux in a turbine tested in a blowdown windtunnel when using a two-layered thin film gauge array. The sensor consists of a nickel thermoresistor deposited onto a flexible polyamide sheet that can be easily bounded on a substrate using double sided Adhesive. The assembly constitutes a two-layered system. First, a numerical algorithm is proposed to extract the wall heat flux from the surface temperature history measured by the thin film gauge. It is very flexible and handles multilayered systems. Then, an original procedure is proposed to determine the thermal properties and the thickness of the different layers. It uses the above numerical algorithm coupled with a minimization routine. The repeatability of the procedure is assessed. Finally, tests are processed according to the proposed method. The results are successfully compared with measurements performed with single-layered thin film gauges.

  • Time-Averaged and Time-Resolved Heat Flux Measurements on a Turbine Stator Blade Using Two-Layered Thin-Film Gauges
    Volume 2: Turbo Expo 2004, 2004
    Co-Authors: V. Iliopoulou, R. Dénos, N. Billiard, Tony Arts
    Abstract:

    This paper describes the steps undertaken to measure heat flux in a turbine tested in a blowdown windtunnel when using a two-layered thin film gauge array. The sensor consists of a nickel thermo resistor deposited onto a flexible polymide sheet that can be easily bounded on a substrate using double sided Adhesive. The assembly constitutes a two-layered system. First, a numerical algorithm is proposed to extract the wall heat flux from the surface temperature history measured by the thin film gauge. It is very flexible and handles multi-layered systems. Then, an original procedure is proposed to determine the thermal properties and the thickness of the different layers. It uses the above numerical algorithm coupled with a minimization routine. The repeatability of the procedure is assessed. Finally, tests are processed according to the proposed method. The results are successfully compared with measurements performed with single-layered thin film gauges.Copyright © 2004 by ASME

Ferizka Frastiwi - One of the best experts on this subject based on the ideXlab platform.

  • DEGRADASI ZAT WARNA KATIONIK DAN ANIONIK MENGGUNAKAN IMMOBILISASI FOTOKATALIS TIO2/?-FE2O3/BENTONIT DI BAWAH LAMPU FLUORESCENCE
    Fakultas mipa, 2018
    Co-Authors: Ferizka Frastiwi
    Abstract:

    ABSTRAKImmobilisasi TiO2/Fe2O3/Bentonit telah dilakukan menggunakan metode Brush coating dengan double sided Adhesive tape (DSAT) sebagai perekatnya. Formulasi komposit TiO2/Fe2O3/Bentonit terimmobilisasi dibuat dengan mencampurkan aquadest kedalam TiO2 P25, Fe2O3 dan Bentonit dengan perbandingan massa (g) 4 : 0,25 : 1. Aktivitas fotokatalitik fotokatalis terimmobilisasi dievaluasi menggunakan zat warna methylene blue (MB) dan indigo carmine (IC). Bentonit dan hematite dikarakterisasi menggunakan XRD. Morfologi permukaan dari hematit (?-Fe2O3) dan komposit TiO2/?-Fe2O3/Bentonit dikarterisasi menggunakan SEM. Hasil penelitian menunjukkan bahwa aktivitas fotokatalitik yang optimum dalam mendegradasi zat warna IC yaitu pada massa komposit sebesar 60 mg, pH 5 dan konsentrasi 25 ppm dengan degradasi (%) sebesar 97,2%, sedangkan untuk zat warna MB diperoleh degradasi (%) sebesar 98,6% dengan keadaan optimumnya pada massa fotokatalis sebesar 60 mg, pH awal larutan zat warna yaitu pH 6 dan konsentrasi 25 ppm pada waktu radiasi 60 menit. Regenerasi komposit TiO2/?-Fe2O3/Bentonit terhadap zat warna MB dan IC dilakukan sebanyak 5 kali dengan aktivitas fotokatalitiknya yang hampir sama yaitu sebesar 98,62 %, 98,59%, 98,59%, 98,59%, 98,59% untuk zat warna MB dan 97,19%, 97,80%, 97,08 %, 97,08% untuk zat warna IC berturut turut. Kata kunci : fotokatalis, zat warna kationik, zat warna anionik, immobilisasi, TiO2, ?-Fe2O3, Bentonit?ABSTRACTImmobilization of TiO2/?-Fe2O3/Bentonit was carried out using the Brush coating method and double sided Adhesive tape as a binder. Formulation of immobilized TiO2/?-Fe2O3/Bentonit composite was made by mixing aquadest into TiO2 P25, Fe2O3 and Bentonite with mass ratio (g) of 4 : 0.25 : 1. Photocatalytic activity of immobilized photocatalysts was evaluated using methylene blue (MB) and indigo carmine (IC) dyes. Bentonite and hematite are characterized using XRD. Surface morphology of hematite (?-Fe2O3) and TiO2/?-Fe2O3/Bentonit composites were chartered using SEM. The results showed that the optimum photocatalytic activity in the degradation of IC dyes were at the composite mass of 60 mg, pH 5 and concentration of 25 ppm with degradation (%) of 97.2%, while in MB dyes obtained degradation (%) was 98.6% with the optimum conditions were on photocatalyst mass of 60 mg, initial pH of the dye at pH 6 and concentration of solution 25 ppm with 60 minutes of irradiation time. Regeneration of TiO2/?-Fe2O3/Bentonit composites for degradation MB dyes and IC was carried out 5 cycles which gave similar photocatalytic activity results were 98.62%, 98.59%, 98.59%, 98.59%, 98.59% for MB dyes solution and 97.19%, 97.80%, 97.08%, 97.08% for IC dyes solutions respectively. Key word : photocatalysts, cationic dye, anionic dye,immobilization, TiO2, ?-Fe2O3, BentonitBanda Ace

  • DEGRADASI ZAT WARNA KATIONIK DAN ANIONIK MENGGUNAKAN IMMOBILISASI FOTOKATALIS TIO2/?-FE2O3/BENTONIT DIBAWAH LAMPU FLUORESCENCE
    FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM UNIVERSITAS SYIAH KUALA, 2018
    Co-Authors: Ferizka Frastiwi
    Abstract:

    ABSTRAKImmobilisasi TiO2/Fe2O3/Bentonit telah dilakukan menggunakan metode Brush coating dengan double sided Adhesive tape (DSAT) sebagai perekatnya. Formulasi komposit TiO2/Fe2O3/Bentonit terimmobilisasi dibuat dengan mencampurkan aquadest kedalam TiO2 P25, Fe2O3 dan Bentonit dengan perbandingan massa (g) 4 : 0,25 : 1. Aktivitas fotokatalitik fotokatalis terimmobilisasi dievaluasi menggunakan zat warna methylene blue (MB) dan indigo carmine (IC). Bentonit dan hematite dikarakterisasi menggunakan XRD. Morfologi permukaan dari hematit (?-Fe2O3) dan komposit TiO2/?-Fe2O3/Bentonit dikarterisasi menggunakan SEM. Hasil penelitian menunjukkan bahwa aktivitas fotokatalitik yang optimum dalam mendegradasi zat warna IC yaitu pada massa komposit sebesar 60 mg, pH 5 dan konsentrasi 25 ppm dengan degradasi (%) sebesar 97,2%, sedangkan untuk zat warna MB diperoleh degradasi (%) sebesar 98,6% dengan keadaan optimumnya pada massa fotokatalis sebesar 60 mg, pH awal larutan zat warna yaitu pH 6 dan konsentrasi 25 ppm pada waktu radiasi 60 menit. Regenerasi komposit TiO2/?-Fe2O3/Bentonit terhadap zat warna MB dan IC dilakukan sebanyak 5 kali dengan aktivitas fotokatalitiknya yang hampir sama yaitu sebesar 98,62 %, 98,59%, 98,59%, 98,59%, 98,59% untuk zat warna MB dan 97,19%, 97,80%, 97,08 %, 97,08% untuk zat warna IC berturut turut. Kata kunci : fotokatalis, zat warna kationik, zat warna anionik, immobilisasi, TiO2, ?-Fe2O3, Bentonit?Banda Ace