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Common Training Programme for the Partner Test Labs, BEEP A Presentation by Institute of Technology, Nirma University, Ahmedabad 15 th May 2015, Ahmedabad

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  • Common Training Programme for the Partner Test Labs, BEEP

    A Presentation by

    Institute of Technology,

    Nirma University, Ahmedabad

    15th May 2015, Ahmedabad

  • Presentation Overview

    Introduction to the Thermal Insulations Testing

    Facility, Nirma University

    Available testing equipments

    Testing Experiences

    Q & A

  • The Thermal Insulations Testing Laboratory at Nirma University was developed under the NAFETIC (National Facility in Engineering and Technology with Industrial Collaboration) Scheme of AICTE

  • The testing instruments/setups in the Thermal Insulations Testing Laboratory include:

    Guarded Hot Plate System for thermal conductivity measurement * Vacuum Pumping System with LN2 Boil-off Calorimeter

    * Computerized Compression Testing Machine

    * Vibration Machine

    * Flame Height, Time of Burning and Loss of Mass Determination Apparatus. * Incombustibility Test Apparatus

    * Projection Microscope * Jolting Machine * Humidity Chambers * Apparatus for determination of shot content by elutriator * Sulphur determination apparatus * Apparatus for Determining Horizontal Burning Characteristic

  • Testing of Thermal Conductivity as per ASTM C177 and ISO 8302

    The Laboratory possesses a Guarded Hot Plate system to test thermal conductivity of insulations in the conductivity range 0.015 to 2.5 W / m K and temperature range -10C to +350C as per ASTM C 177 and ISO 8302.

    Accuracy : + 4 % and Reproducibility : + 2 %

    There are two furnaces for testing: one furnace is sub-ambient for the temperature range -10 C to 50 C, while the other furnace is for the higher temperature range from 50 C to 400 C.

    The equipment is calibrated periodically by using NIST Standard Reference Material (SRM) and the instrument output checked against the reference values. For the sub-ambient furnace, a Fibrous Glass Board SRM 1450b is used while for the high temperature furnace, a Fumed Silica Board SRM 1459 is utilized for checking the system performance.

  • IOC Workshop, 05/09/13

  • Sample result output

    Specimen Title diagnostics test

    Specimen ID No. nist_fs_300_400

    Test Title 2276

    Specimen Thickness 25.40 (mm)

    Starting Date 08/11/17

    Starting Time 15:21:42

    A B C D E F G H I J

    Hours C W/(mK) (mK)/W C C mm mm mm mm

    20.3 306.0 0.0239 1.057 31.5 0.047 25.269 25.417 25.133 25.256

    13.0 408.0 0.0271 0.932 31.1 0.049 25.291 25.423 25.149 25.299

    Descriptions

    A: Time that the segment was running (hours)

    B: Mean specimen temperature (C)

    C: Thermal conductivity (W/(mK)

    D: Thermal resistance (mK)/W

    E: Specimen temperature difference (C)

    F: Temperature difference between outer gap and inner gap of the hot plate (C)

    G: Average specimen thickness, measured (mm)

    H: Measured thickness 1 (Left Front) (mm)

    I: Measured thickness 2 (Right Front) (mm)

    J: Measured thickness 3 (Back Center) (mm)

  • NIST Standard Reference Material (SRM) for Guarded Hot Plate Setup (Fibrous Glass Board & Fumed Silica)

  • Testing of Powder Insulation under Evacuation

  • Variation of thermal conductivity of Perlite powder with pressure

  • A Boil-off calorimeter

  • Mineral Wool Thermal Insulation Materials Method of Testing as per IS 3144

    Determination of thickness. Determination of resistance to compression. Determination of bulk density and bulk density under specified load. Test for thermal conductivity. Test for maximum recommended temperature. Determination of shot content. Determination of moisture content on as received basis. Determination of moisture absorption. Incombustibility Test. Determination of carbon. Determination of sulphur. Determination of settling due to vibration and jolting. Determination of water - vapour permeance. Determination of fiber diameter. Determination of alkalinity.

  • Testing of Expanded Polystyrene as per IS : 4671

    Determination of compressive strength at 10% deformation.

    Determination of cross breaking strength.

    Determination of water vapour permeance.

    Determination of thermal stability.

    Determination of water absorption.

    Test for flammability.

  • Testing of Rigid Cellular Insulation as per IS : 11239 (Part 1 to 12)

    Determination of apparent density.

    Determination of dimensional stability.

    Determination of water vapour transmission rate.

    Determination of volume percent of open and closed cells.

    Determination of heat distortion temperature.

    Determination of flame height, time of burning and loss of mass.

    Determination of water absorption.

    Determination of flexural strength.

    Determination of compressive strength.

    Determinations of horizontal burning characteristics.

  • Testing Experiences

    More than 125 testing assignments successfully completed till date. Work done includes: Defense Research and Development Laboratory (DRDL) UOP Honeywell Reliance Industries Ltd. Sintex Industries Ltd. Thermax Ltd. Samsung Engg. Ltd. Kaefer Punj Lloyd Ltd. Lafarge India Pvt Ltd. Keltech Energies Ltd. Lloyd Insulations (India) Ltd. Permapipe UAE ..and many others.

  • Insulation Materials Tested The materials tested include:

    Polyurethane and Polyisocyanurade Foams

    Speciality Foams for High Temperature Applications

    Expanded Polystyrene

    Extruded Polystyrene

    Perlite Concrete

    Aerated Concrete

    Sandwich Panels

    Mineral Wool

    Aerogel

    Microporous Insulation

    Thermal Tile

    Innovative Insulation Materials developed

    Powder Insulation such as Perlite and Vermiculite

  • ORGANISING SEMINARS/WORKSHOPS/INTERACTIONS

    A National Seminar on Thermal Insulating Materials- Advances and

    Testing Requirements sponsored by AICTE (All India Council for Technical

    Education) from 24 to 25 November, 2007.

    A National Seminar on Effective Thermal Insulations for Energy

    Conservation supported by GUJCOST (Gujarat Council on Science &

    Technology) and cosupported by ISHRAE Ahmedabad Chapter and ASHRAE

    Western India Chapter from 1 to 2 January, 2010.

    Active Member of the Technical Sub-Committee on Thermal Insulations at

    Bureau of Indian Standards.