The Experts below are selected from a list of 8616 Experts worldwide ranked by ideXlab platform

K.w. Tou - One of the best experts on this subject based on the ideXlab platform.

  • Experimental study of transient forced convection heat transfer from simulated Electronic Chips
    Heat and Mass Transfer, 2005
    Co-Authors: H. Bhowmik, K.w. Tou
    Abstract:

    Experiments are performed to study the single-phase transient forced convection heat transfer on an array of four in-line, flush-mounted simulated Electronic Chips in a vertical rectangular channel. Water is the coolant media and the flow covers the wide range of laminar flow regime with Reynolds number, based on heat source length, from 800 to 2,625. The heat flux ranges from 1 W/cm^2 to 7 W/cm^2. The heat transfer characteristics are studied and correlations are presented. The transient correlation for overall data recommended is Nu_ℓ= 0.945(Pe_ℓ ^1/3) Fo^−1/2.

  • Experimental study of transient natural convection heat transfer from simulated Electronic Chips
    Experimental Thermal and Fluid Science, 2005
    Co-Authors: H. Bhowmik, K.w. Tou
    Abstract:

    Experiments are performed using water to study the single-phase transient natural convection heat transfer from in-line four simulated Electronic Chips, which are flush-mounted to one wall of a vertical rectangular channel. The heat flux ranges from 1 kW/m2 to 6 kW/m2. The effect of heat fluxes, geometric parameters such as chip configuration numbers are investigated. The results indicate that the heat transfer coefficient is affected strongly by the number of Chips. Results compare favourably with those obtained from the literature for steady-state forced and natural convection heat transfer. Correlations are presented for individual Chips as well as for overall data in the transient regime. The transient correlation for overall data recommended is Nul=1.06(Fo)-0.47(Ral)1/4Nul=1.06(Fo)-0.47(Ral)1/4.

  • Effect of protrusion on thermal transient behavior of Chips in a liquid channel during loss of pumping power
    International Communications in Heat and Mass Transfer, 2005
    Co-Authors: H. Bhowmik, K.w. Tou
    Abstract:

    Abstract Experiments are performed to study the single-phase transient heat transfer at different protrusion heights of the Electronic Chips during an accidental stoppage of coolant flow due to loss of pumping power. Water is the coolant media and the flow covers the wide range of laminar flow regime with Reynolds number, based on heat source length, from 800 to 2625 and the heat flux ranging from 1 W/cm2 to 7 W/cm2. The general impacts of heat source protrusions (B=1, 2 mm) on heat transfer behavior of four Chips are investigated by comparing the results obtained from flush-mounted (B=0) heat sources. Finally the correlation equations are obtained by modifying the correlations of flush-mounted heater, employing the Chips' protrusion height (B) in the dimensionless (B/l) form.

  • Experimental Thermal Behavior of Electronic Chips in a Channel During Pump-On Transient Period
    Volume 4, 2004
    Co-Authors: H. Bhowmik, K.w. Tou, Chih Ping Tso
    Abstract:

    Experiments are performed to study the heat transfer characteristics during the pump-on transient period from an array of 4 × 1 flush mounted discrete heat sources in a vertical rectangular channel using water as the working fluid. The experimental data covers the flow regime with Reynolds number based on heat source length ranging from 1050 to 2625. The applied uniform heat fluxes to the Chips are 1, 3, 5 and 7 W/cm2 . The effects of heat flux, flow rates and chip numbers are investigated and empirical correlations are developed for investigated and empirical correlations are developed for individual Chips as well as for overall data in the transient regime. The transient correlation recommended is Nul /(Pel )1/3 = 3.5(Fo)1/4 .Copyright © 2004 by ASME

  • Air Cooling Study of Transient Natural Convection Heat Transfer From Simulated Electronic Chips
    Heat Transfer Volume 3, 2004
    Co-Authors: H. Bhowmik, K.w. Tou
    Abstract:

    Experiments are performed to study the heat transfer characteristics during the power-on transient period from an array of 4 × 1 discrete heat sources in a vertical rectangular channel using air as the working fluid. The heat flux ranges from 1000 W/m2 to 5000 W/m2. For 2 mm protrusion of the heater, the effect of heat fluxes and chip numbers are investigated and observed that the transient Nul strongly depends on the number of Chips. Correlations are presented for individual Chips as well as for overall data in the transient regime.

H. Bhowmik - One of the best experts on this subject based on the ideXlab platform.

  • Experimental study of transient forced convection heat transfer from simulated Electronic Chips
    Heat and Mass Transfer, 2005
    Co-Authors: H. Bhowmik, K.w. Tou
    Abstract:

    Experiments are performed to study the single-phase transient forced convection heat transfer on an array of four in-line, flush-mounted simulated Electronic Chips in a vertical rectangular channel. Water is the coolant media and the flow covers the wide range of laminar flow regime with Reynolds number, based on heat source length, from 800 to 2,625. The heat flux ranges from 1 W/cm^2 to 7 W/cm^2. The heat transfer characteristics are studied and correlations are presented. The transient correlation for overall data recommended is Nu_ℓ= 0.945(Pe_ℓ ^1/3) Fo^−1/2.

  • Experimental study of transient natural convection heat transfer from simulated Electronic Chips
    Experimental Thermal and Fluid Science, 2005
    Co-Authors: H. Bhowmik, K.w. Tou
    Abstract:

    Experiments are performed using water to study the single-phase transient natural convection heat transfer from in-line four simulated Electronic Chips, which are flush-mounted to one wall of a vertical rectangular channel. The heat flux ranges from 1 kW/m2 to 6 kW/m2. The effect of heat fluxes, geometric parameters such as chip configuration numbers are investigated. The results indicate that the heat transfer coefficient is affected strongly by the number of Chips. Results compare favourably with those obtained from the literature for steady-state forced and natural convection heat transfer. Correlations are presented for individual Chips as well as for overall data in the transient regime. The transient correlation for overall data recommended is Nul=1.06(Fo)-0.47(Ral)1/4Nul=1.06(Fo)-0.47(Ral)1/4.

  • Effect of protrusion on thermal transient behavior of Chips in a liquid channel during loss of pumping power
    International Communications in Heat and Mass Transfer, 2005
    Co-Authors: H. Bhowmik, K.w. Tou
    Abstract:

    Abstract Experiments are performed to study the single-phase transient heat transfer at different protrusion heights of the Electronic Chips during an accidental stoppage of coolant flow due to loss of pumping power. Water is the coolant media and the flow covers the wide range of laminar flow regime with Reynolds number, based on heat source length, from 800 to 2625 and the heat flux ranging from 1 W/cm2 to 7 W/cm2. The general impacts of heat source protrusions (B=1, 2 mm) on heat transfer behavior of four Chips are investigated by comparing the results obtained from flush-mounted (B=0) heat sources. Finally the correlation equations are obtained by modifying the correlations of flush-mounted heater, employing the Chips' protrusion height (B) in the dimensionless (B/l) form.

  • Water cooling study of natural convection heat transfer from simulated Electronic Chips during power-on transient period
    Twentieth Annual IEEE Semiconductor Thermal Measurement and Management Symposium (IEEE Cat. No.04CH37545), 2004
    Co-Authors: H. Bhowmik
    Abstract:

    Experiments are performed using water to study the natural convection heat transfer during power-on transient period from in-line four simulated flush mounted Electronic Chips. The heat flux ranges from 0.1 W/cm/sup 2/ to 0.6 W/cm/sup 2/. The effect of heat fluxes, geometric parameters such as chip numbers are investigated. Correlations are presented for individual Chips as well as for overall data in the transient regime.

  • Experimental Thermal Behavior of Electronic Chips in a Channel During Pump-On Transient Period
    Volume 4, 2004
    Co-Authors: H. Bhowmik, K.w. Tou, Chih Ping Tso
    Abstract:

    Experiments are performed to study the heat transfer characteristics during the pump-on transient period from an array of 4 × 1 flush mounted discrete heat sources in a vertical rectangular channel using water as the working fluid. The experimental data covers the flow regime with Reynolds number based on heat source length ranging from 1050 to 2625. The applied uniform heat fluxes to the Chips are 1, 3, 5 and 7 W/cm2 . The effects of heat flux, flow rates and chip numbers are investigated and empirical correlations are developed for investigated and empirical correlations are developed for individual Chips as well as for overall data in the transient regime. The transient correlation recommended is Nul /(Pel )1/3 = 3.5(Fo)1/4 .Copyright © 2004 by ASME

Jairo J. Pedrotti - One of the best experts on this subject based on the ideXlab platform.

  • Fast batch injection analysis of H2O2 using an array of Pt-modified gold microelectrodes obtained from split Electronic Chips
    Analytica Chimica Acta, 2011
    Co-Authors: Bruno D. Pacheco, Jaqueline Valério, Lúcio Angnes, Jairo J. Pedrotti
    Abstract:

    A fast and robust analytical method for amperometric determination of hydrogen peroxide (H(2)O(2)) based on batch injection analysis (BIA) on an array of gold microelectrodes modified with platinum is proposed. The gold microelectrode array (n=14) was obtained from Electronic Chips developed for surface mounted device technology (SMD), whose size offers advantages to adapt them in batch cells. The effect of the dispensing rate, volume injected, distance between the platinum microelectrodes and the pipette tip, as well as the volume of solution in the cell on the analytical response were evaluated. The method allows the H(2)O(2) amperometric determination in the concentration range from 0.8 μmolL(-1) to 100 μmolL(-1). The analytical frequency can attain 300 determinations per hour and the detection limit was estimated in 0.34 μmolL(-1) (3σ). The anodic current peaks obtained after a series of 23 successive injections of 50 μL of 25 μmolL(-1) H(2)O(2) showed an RSD

  • Fast batch injection analysis of H(2)O(2) using an array of Pt-modified gold microelectrodes obtained from split Electronic Chips.
    Analytica chimica acta, 2011
    Co-Authors: Bruno D. Pacheco, Jaqueline Valério, Lúcio Angnes, Jairo J. Pedrotti
    Abstract:

    A fast and robust analytical method for amperometric determination of hydrogen peroxide (H(2)O(2)) based on batch injection analysis (BIA) on an array of gold microelectrodes modified with platinum is proposed. The gold microelectrode array (n=14) was obtained from Electronic Chips developed for surface mounted device technology (SMD), whose size offers advantages to adapt them in batch cells. The effect of the dispensing rate, volume injected, distance between the platinum microelectrodes and the pipette tip, as well as the volume of solution in the cell on the analytical response were evaluated. The method allows the H(2)O(2) amperometric determination in the concentration range from 0.8 μmolL(-1) to 100 μmolL(-1). The analytical frequency can attain 300 determinations per hour and the detection limit was estimated in 0.34 μmolL(-1) (3σ). The anodic current peaks obtained after a series of 23 successive injections of 50 μL of 25 μmolL(-1) H(2)O(2) showed an RSD

Bruno D. Pacheco - One of the best experts on this subject based on the ideXlab platform.

  • Fast batch injection analysis of H2O2 using an array of Pt-modified gold microelectrodes obtained from split Electronic Chips
    Analytica Chimica Acta, 2011
    Co-Authors: Bruno D. Pacheco, Jaqueline Valério, Lúcio Angnes, Jairo J. Pedrotti
    Abstract:

    A fast and robust analytical method for amperometric determination of hydrogen peroxide (H(2)O(2)) based on batch injection analysis (BIA) on an array of gold microelectrodes modified with platinum is proposed. The gold microelectrode array (n=14) was obtained from Electronic Chips developed for surface mounted device technology (SMD), whose size offers advantages to adapt them in batch cells. The effect of the dispensing rate, volume injected, distance between the platinum microelectrodes and the pipette tip, as well as the volume of solution in the cell on the analytical response were evaluated. The method allows the H(2)O(2) amperometric determination in the concentration range from 0.8 μmolL(-1) to 100 μmolL(-1). The analytical frequency can attain 300 determinations per hour and the detection limit was estimated in 0.34 μmolL(-1) (3σ). The anodic current peaks obtained after a series of 23 successive injections of 50 μL of 25 μmolL(-1) H(2)O(2) showed an RSD

  • Fast batch injection analysis of H(2)O(2) using an array of Pt-modified gold microelectrodes obtained from split Electronic Chips.
    Analytica chimica acta, 2011
    Co-Authors: Bruno D. Pacheco, Jaqueline Valério, Lúcio Angnes, Jairo J. Pedrotti
    Abstract:

    A fast and robust analytical method for amperometric determination of hydrogen peroxide (H(2)O(2)) based on batch injection analysis (BIA) on an array of gold microelectrodes modified with platinum is proposed. The gold microelectrode array (n=14) was obtained from Electronic Chips developed for surface mounted device technology (SMD), whose size offers advantages to adapt them in batch cells. The effect of the dispensing rate, volume injected, distance between the platinum microelectrodes and the pipette tip, as well as the volume of solution in the cell on the analytical response were evaluated. The method allows the H(2)O(2) amperometric determination in the concentration range from 0.8 μmolL(-1) to 100 μmolL(-1). The analytical frequency can attain 300 determinations per hour and the detection limit was estimated in 0.34 μmolL(-1) (3σ). The anodic current peaks obtained after a series of 23 successive injections of 50 μL of 25 μmolL(-1) H(2)O(2) showed an RSD

Jaqueline Valério - One of the best experts on this subject based on the ideXlab platform.

  • Fast batch injection analysis of H2O2 using an array of Pt-modified gold microelectrodes obtained from split Electronic Chips
    Analytica Chimica Acta, 2011
    Co-Authors: Bruno D. Pacheco, Jaqueline Valério, Lúcio Angnes, Jairo J. Pedrotti
    Abstract:

    A fast and robust analytical method for amperometric determination of hydrogen peroxide (H(2)O(2)) based on batch injection analysis (BIA) on an array of gold microelectrodes modified with platinum is proposed. The gold microelectrode array (n=14) was obtained from Electronic Chips developed for surface mounted device technology (SMD), whose size offers advantages to adapt them in batch cells. The effect of the dispensing rate, volume injected, distance between the platinum microelectrodes and the pipette tip, as well as the volume of solution in the cell on the analytical response were evaluated. The method allows the H(2)O(2) amperometric determination in the concentration range from 0.8 μmolL(-1) to 100 μmolL(-1). The analytical frequency can attain 300 determinations per hour and the detection limit was estimated in 0.34 μmolL(-1) (3σ). The anodic current peaks obtained after a series of 23 successive injections of 50 μL of 25 μmolL(-1) H(2)O(2) showed an RSD

  • Fast batch injection analysis of H(2)O(2) using an array of Pt-modified gold microelectrodes obtained from split Electronic Chips.
    Analytica chimica acta, 2011
    Co-Authors: Bruno D. Pacheco, Jaqueline Valério, Lúcio Angnes, Jairo J. Pedrotti
    Abstract:

    A fast and robust analytical method for amperometric determination of hydrogen peroxide (H(2)O(2)) based on batch injection analysis (BIA) on an array of gold microelectrodes modified with platinum is proposed. The gold microelectrode array (n=14) was obtained from Electronic Chips developed for surface mounted device technology (SMD), whose size offers advantages to adapt them in batch cells. The effect of the dispensing rate, volume injected, distance between the platinum microelectrodes and the pipette tip, as well as the volume of solution in the cell on the analytical response were evaluated. The method allows the H(2)O(2) amperometric determination in the concentration range from 0.8 μmolL(-1) to 100 μmolL(-1). The analytical frequency can attain 300 determinations per hour and the detection limit was estimated in 0.34 μmolL(-1) (3σ). The anodic current peaks obtained after a series of 23 successive injections of 50 μL of 25 μmolL(-1) H(2)O(2) showed an RSD