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    Heat Transfer Lab

    Uploaded by

    Sidra Liaquat
    The document lists experiments for several heat and mass transfer units, including conduction, convection, boiling, radiation, and heat exchangers. The conduction unit experiments investigate Fourier's Law and how factors like cross-sectional area and insulation affect heat transfer through solids. The convection unit analyzes free and forced convection and how surfaces and flow rates impact heat transfer. Additional units explore heat transfer through concentric tube heat exchangers, a water-water heat exchanger, and boiling. The radiation unit examines how distance, temperature, emissivity and geometry influence the emission and absorption of thermal radiation. Apparatuses are also described for measuring thermal conductivity and radiation.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Heat Transfer Lab

    Uploaded by

    Sidra Liaquat
    129 views8 pages
    The document lists experiments for several heat and mass transfer units, including conduction, convection, boiling, radiation, and heat exchangers. The conduction unit experiments investigate Fourier's Law and how factors like cross-sectional area and insulation affect heat transfer through solids. The convection unit analyzes free and forced convection and how surfaces and flow rates impact heat transfer. Additional units explore heat transfer through concentric tube heat exchangers, a water-water heat exchanger, and boiling. The radiation unit examines how distance, temperature, emissivity and geometry influence the emission and absorption of thermal radiation. Apparatuses are also described for measuring thermal conductivity and radiation.

    Original Description:

    Lab Manual for Heat Transfer Experiments

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    The document lists experiments for several heat and mass transfer units, including conduction, convection, boiling, radiation, and heat exchangers. The conduction unit experiments investigate Fourier's Law and how factors like cross-sectional area and insulation affect heat transfer through solids. The convection unit analyzes free and forced convection and how surfaces and flow rates impact heat transfer. Additional units explore heat transfer through concentric tube heat exchangers, a water-water heat exchanger, and boiling. The radiation unit examines how distance, temperature, emissivity and geometry influence the emission and absorption of thermal radiation. Apparatuses are also described for measuring thermal conductivity and radiation.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    129 views8 pages

    Heat Transfer Lab

    Uploaded by

    Sidra Liaquat
    The document lists experiments for several heat and mass transfer units, including conduction, convection, boiling, radiation, and heat exchangers. The conduction unit experiments investigate Fourier's Law and how factors like cross-sectional area and insulation affect heat transfer through solids. The convection unit analyzes free and forced convection and how surfaces and flow rates impact heat transfer. Additional units explore heat transfer through concentric tube heat exchangers, a water-water heat exchanger, and boiling. The radiation unit examines how distance, temperature, emissivity and geometry influence the emission and absorption of thermal radiation. Apparatuses are also described for measuring thermal conductivity and radiation.

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    HEAT AND MASS TRANSFER

    List of Experiments:
    Conduction Heat Transfer Unit
    1. Investigation of Fourier Law for linear conduction of heat along a simple bar.
    2. Study the conduction of heat along a composite bar and evaluate the overall heat transfer
    coefficient.
    3. Investigate the effect of change in cross sectional area on the temperature profile along a thermal
    conductor.
    4. Examine the temperature profile and determine the rate of heat transfer resulting from radial
    steady conduction through the wall of a cylinder.
    5. Determine the effect of surface contact on thermal conduction between adjacent slabs of material.
    6. Investigate the influence of thermal insulation upon the conduction of heat between the adjacent
    metals.

    Convection Heat Transfer Unit

    1. Demonstrate the relationship between power input and surface temperature in free convection.
    2. Demonstrate the relationship between power input and surface temperature in forced convection.
    3. Demonstrate the use of extended surfaces to improve the heat transfer from the surface.
    4. Determine the temperature distribution along an extended surface.
    5. Comparison of a vertical and horizontal flat plate in free convection.

    Concentric Tube Heat Exchanger


    1. Demonstrate the working principles of a concentric tube heat exchanger operating under parallel
    flow condition.
    2. Demonstrate the working principles of a concentric tube heat exchanger operating under counter
    flow condition.
    3. Demonstrate the effect of hot water temperature variation on the performance characteristic of a
    concentric tube heat exchanger operating under parallel & counter flow conditions.
    4. Demonstrate the effect of flow rate variation on the performance characteristic of a concentric
    tube heat exchanger operating under parallel & counter flow conditions.

    Water to Water Turbulent flow heat exchanger


    1. Determination of heat transfer rate, LMTD, and overall heat transfer coefficient.
    2. Determination of surface heat transfer coefficients inside & outside the tube and the effect of
    fluid velocity on these.
    3. Comparison of con-current and counter current flow in a heat exchanger.
    4. Investigation of the relationship between Nusselt Number, Reynolds Number & Prandtl Number.
    Boiling Heat Transfer Unit
    1. Visual demonstration of Convective, Nucleate, and film boiling.
    2. Determination of heat flux and surface heat transfer coefficient up to and beyond the critical
    condition at constant pressure.
    3. Investigation of the effect of pressure on critical heat flux.
    4. Demonstration of film wise condensation and measurement of overall heat transfer coefficient.
    5. Demonstration of the cause of liquid carry over or priming in boilers.
    6. Determination of the pressure temperature relationship of a pure substance.
    7. Investigation of the effect of air in a condenser.
    8. Demonstration of the law of partial pressures.

    Radiation Heat Transfer Unit


    1. Show that the intensity of radiation on a surface is inversely proportional to the square of the
    distance of the surface from the radiation source.
    2. Show that the intensity of radiation varies as the fourth power of the source temperature.
    3. To determine the emissivity of different surfaces. (Polished and silver anodised compared with
    matt black).
    4. To demonstrate how the emissivity of radiating surfaces in proximity to each other will affect the
    surface temperatures and the heat emitted.
    5. To determine the validity of Kirchhoff's Law which states that the emissivity of a grey surface is
    equal to its absorptivity of radiation received from another surface when in a condition of thermal
    equilibrium.
    6. To demonstrate that the exchange of radiant energy from one surface to another is dependent
    upon their interconnecting geometry, i.e. a function of the amount that each surface can 'see' of
    the other.
    7. To show that the illuminance of a surface is inversely proportional to the square of the distance of
    the surface from the light source.
    8. To show that the energy radiated in any direction at an angle with a surface is equal to the normal
    radiation multiplied by the cosine of the angle between the direction of radiation and the normal
    to the surface.
    9. To show that light passing through non-opaque matter is reduced in intensity in proportion to the
    thickness and absorptivity of the material.
    THERMAL CONDUCTIVITY OF LIQUID & GAS
    APPARATUS

    THERMAL RADIATION APPARATUS


    HEAT CONDUCTION APPARATUS

    FREE & FORCED CONVECTION HEAT TRANSFER


    APPARATUS
    COCENTRIC TUBE HEAT EXCHANGER UNIT
    WATER TO WATER TURBULENT HEAT TRANSFER
    UNIT
    BOILING HEAT TRANSFER UNIT

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