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Combustion lab

LERC has set up a fully equipped state-of the art Combustion Lab for determining the performance as well as safety parameters of domestic LPG Stoves. It is highly equipped computerized laboratory with modern technology for testing Domestic LPG Stoves as per IS 4246:2002 and IS 5116:1996.

Testing Facilities

  • Gas Soundness Test Workstation
  • Strength and Rigidity Test Rig
  • Gas Consumption Test Workstation
  • Visual Tests
  • Ignition and Flame Travel Test
  • Flame Stability Test
  • Noise Control Test
  • Flashback Test
  • Formation of Soot Test
  • Multi Parameter Test Bench including
  • Combustion Test
  • Resistance to Draught
  • Flame Temperature Test
  • Fire Hazard & Limiting Temperature Test Workstation
  • Thermal Efficiency Test Workstation

Gas Soundness Test

Test Method – IS 4246:2002(Reaffirmed 2015) & IS 5116:1996

Feature –

  • Computerized system for measuring and recording the leak.
  • Accurate measurement of leak
  • Safety trips and alarms

Application - To check whether the gas carrying parts of the LPG domestic gas stoves and the complete assembly itself is sound against any gas leakage as per the requirement of the Indian Standard. soundness of the gas rail assembly is checked for any leakage by observing for appearance of bubbles in the bubble leak indicator placed in the air line

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Strength & Rigidity Test

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Test Method – IS 4246:2002(Reaffirmed 2015)

Feature –

  • Computer aided test rig.
  • Automated loading of required weight on the LPG Stoves for deflection measurement.
  • Use of precision measuring instruments for measuring deflection.
  • Safety trips and alarms

Application – To determine the strength of LPG Stoves to resist getting deformed when loaded with heavy cooking utensils by measuring the vertical deflection of the top surface and the distance between opposite sides of the LPG Stove when loaded.

Gas Consumption Test

Test Method – IS 4246:2002(Reaffirmed 2015)

Feature –

  • Computerized system for measuring and recording the consumption of burners
  • Use of sophisticated and accurate flow meter for flow measurement
  • Precision control of required inlet pressure
  • Safety trips and alarms

Application - To verify whether the burner assembly of the LPG domestic gas stove gives the gas consumption rate as specified by the manufacturer of the stove within a range of + 8%. The gas consumption of each of the burners is calculated by volumetric method.

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Combustion Test

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Test Method – IS 4246:2002(Reaffirmed 2015)

Feature –

  • Computerized system for measuring and recording the toxic level of flue gas emission.
  • Direct measurement of CO & CO2 content using infrared principle.
  • Measurement of Combustion Efficiency of LPG Stove.
  • Safety trips and alarms

Application – To analyse the flue gas which are the products of Combustion to determine the Carbon Dioxide (CO2) and Carbon monoxide (CO) content. The CO / CO2 ratio is determined by direct analysis of the flue gas, using an infrared flue gas analyzer

Resistance to Draught

Test Method – IS 4246:2002(Reaffirmed 2015)

Feature –

  • Computerized system for measuring and recording the results
  • Wind conditions are simulated using computer control and variable frequency drive for fan operation
  • Wind conditions measured using precision rotating vane anemometer.
  • Safety trips and alarms

Application – To measure the performance of LPG Stoves by observing the flame of the burner operating at maximum consumption when the same is placed in a localized air current of 2 m/s.

Flame Temperature Test

Test Method – IS 4246:2002(Reaffirmed 2015)

Feature –

  • Computerized system for measuring and recording the results
  • Direct temperature measurement using digital temperature recording device.
  • Accurate height control for precise temperature measurement.
  • Safety trips and alarms

Application – To ascertain whether the flame temperature meets the standard requirement as stipulated in Indian Standard. The flame temperature of both the burner is measured at fully “ON” condition of the burner using a thermocouple at any point on a plane a specified height.

Fire Hazard and Limiting Temperature Test

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Test Method – IS 4246:2002(Reaffirmed 2015) & IS 5116:1996

Feature –

  • Computerized system for measuring and recording the surrounding temperature rise when LPG Stoves are in operation.
  • 60 nos. of thermocouples for temperature measurement
  • Automated panel movement for measuring ceiling temperature.
  • Non-contact IR thermometer for accurate recording of LPG Stove body and knob temperature.
  • Safety trips and alarms

Application – To check whether the wall, floor and ceiling temperatures at the most affected junctions while operating the LPG domestic gas stove meets the standard requirement when LPG Stove is placed in an enclosure mounted with thermocouples.

Thermal Efficiency Test

Test Method – IS 4246:2002(Reaffirmed 2015) & LERC defined standard C-101

Feature –

  • Computerized system for measuring and recording the various parameter while carrying out the test and reporting of test results.
  • Electronic temperature measurement device for accurate temperature measurement.
  • Realistic determination of calorific value of the LPG used for the test by using a Gas Chromatograph.
  • Using an online weighing method for measuring LPG consumption during the test for more accurate and realistic thermal efficiency value for the stove.
  • Improved measurement uncertainty
  • Improvised event driven test facility to reduce human intervention during the test so as to eliminate the errors while testing to the extent possible
  • Safety trips and alarms

Application – A computerized thermal efficiency test set up for determining the thermal efficiency of domestic LPG Stoves and confirming whether it meets the standard requirement of minimum 68%

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