Heat Release Tester Comply with ISO 9705 and ISO 5660-1 test standard,It is suitable for buildings and large complexes (including rolling stock, vehicles, warehouses and the way they are constructed) as well as for extensive fire performance test verification of raw materials, buildings and solid models
The Heat Release Tester is a device used to measure the heat release rate of materials during combustion. It assesses how much heat is generated by a material when it burns, which is crucial for understanding its flammability and potential contribution to fire growth.
In the testing process, a sample is exposed to a controlled heat source, and the apparatus captures data on peak heat release rate, total heat release, and other combustion characteristics. This information helps evaluate the fire performance of various materials, such as building products, textiles, and plastics, ensuring compliance with fire safety standards and aiding in the development of safer materials.
Compliance：ISO 9705 "Fire tests; full-scale room test for surface products" test standard;ISO5660-1 "Reaction to fire tests-Heat release, smoke production and mass loss rate-Part 1: Heat release rate (cone calorimeter method)" test standard;
1. The whole machine consists of a standard test room, a standard ignition source, a cone collector, a gas analyzer, a smoke exhaust duct, a smoke cooler, a fan and a measuring device.
2. Standard test room:
2. 2 Size: 6000±50mm long, 4800±50mm wide, 2400±50mm high
2.3 The door of the standard test room is located at the center wall of the 4800*2400mm short side wall on one side. There is no vent on the floor top plate. The door size is 800±10mm wide and 2000±10mm high.
2.4 The test room is made of non-combustible materials with a density of 500-800KG/M3 and a thickness of 25mm.
3. Ignition source:
3.1 The standard ignition source consists of a standard igniter and a gas supply system
3.2 The standard igniter shell is welded with 1.0mm steel plate, with a size of 170*170*145mm. The shell is divided into two layers by a metal mesh, filled with pebbles and sand respectively. The filling height of the lower layer of pebbles is 100mm, and the upper layer is sand flush with the upper edge of the igniter. The particle size of the sand is 2-3mm, and the particle size of the pebbles is 4-8mm.
3.3 Gas source: It consists of a bottle group of liquid propane with a purity of not less than 95%, a pressure reducer, a voltage stabilizer, a measuring device and a gas pipeline.
4 Conical collector:
4.1 Collect all the smoke generated by combustion in the standard test room.
4.2 Install above the door of the standard test room, the bottom is flush with the top of the room, the bottom size is 7620*7620mm, the height is 1000mm, one side of the bottom is close to the test room, and the other three sides are extended 1000mm downward with 2mm thick steel plates, the effective height is 2000mm, the top of the conical collector is a 900*900*900mm cube, in order to increase the turbulence effect, two 500*900mm steel plates are installed in the top cube to form a flue gas mixer.
5 Smoke exhaust duct:
5.1 Installed at the outlet of the flue gas mixer, the inner diameter is 400mm, and the straight pipe section is 5M.
5.2 Flow equalizers should be installed at both ends of the straight pipe section to make the gas flow in the pipe uniform
5.3 The measuring section of the system should be set at the straight pipe section of the exhaust pipe and the place where the gas is evenly mixed
6. Smoke cooler: water mist cooling is adopted, and the outlet temperature of the smoke passing through the smoke cooler should not exceed 80℃.
Smoke exhaust pipe
7. Fan:
7.1 The exhaust volume is 108000M3/H to collect all the smoke generated by the surface material solid room fire test, and the vacuum degree at the tail of the fan is 2KPa
7.2 The exhaust volume of the fan is continuously adjustable by the frequency converter
8. Heat flow meter: Range: 0~50KW/M2, accuracy: ±3%, response time: ≦1S, repeatability: ±0.5%
9. Measurement of gas temperature: Seven thermocouples with a time constant of<0.1s are="" used="" to="" measure="" the="" temperature="" distribution="" of="" gas="" flowing="" into="" and="" out="" test="" room="" during="" test.="">
10. Measurement of surface temperature: Use K-type thermocouples to measure the temperature of the sample surface under the ceiling of the test room, a total of 6.
11. Measurement of flow through the door of the test room
11.1 Use a bidirectional velocity probe with a range of 0-25Pa and a resolution of 0.05Pa.
11.2 Installation position: Fixed in the center of the door, with three installation heights of 1300mm, 1800mm, and 1900mm respectively.
12 Volume flow:
12.1 The volume flow of gas is measured by a bidirectional probe, a differential pressure transmitter and a thermocouple with a time constant of no more than 0.1S. The bidirectional velocity probe and thermocouple should be installed in the center of the pipe section of the smoke exhaust pipe measurement section. The bidirectional velocity probe structure (Figure 1) and the differential pressure transmitter are of capacitive type, with a resolution higher than ±5%Pa, a measurement range of 0-2000Pa, and a measurement error of less than 0.5%.
12.2 The measurement accuracy of volume flow should not be less than ±5%, and the response time of step change (90% of the flow from the initial state to the final state) should not exceed 1S.
13. Gas sampling system:
13.1 The gas sampling system consists of a sampling tube, a two-stage filter, a condenser, a stainless steel conduit, a sampling pump, a sample gas distributor, etc.
13.2 The sampling tube is installed on the measuring section of the exhaust pipe, where the gas is evenly mixed, and the air inlet of the sampling tube should be downward to avoid blockage by smoke scale.
13.3 The sampling tube should be made of stainless steel tube. Before entering the analytical instrument, the gas should be filtered through two levels (150µ~200µ for the first level and 3µ for the second level), and the gas sample should be cooled to below 10℃, and the sampling tube should be as short as possible.
13.4 The gas sample is sent to the analyzer by the sampling pump. During the sampling process, oil or similar substances should be avoided to contaminate the gas sample. The sampling pump capacity should be 10-50L/MIN, and each gas analyzer consumes 1L/MIN. The pressure difference generated by the pump is about 10KPA.
13.5 The time interval from the gas sample from the exhaust pipe to the gas analyzer should not exceed 1S.
14 Oxygen measurement: the whole machine is imported from the United States, Siemens paramagnetic measurement;
14.1 Measuring range: 0-10%;
14.2 Maximum measurement error: ±1% of full scale;
14.3 Response time: less than 3S.
15. Concentration of carbon monoxide (CO) and carbon dioxide (CO2): continuous measurement is performed using German and Swiss infrared analyzer modules.
15.1 Carbon monoxide CO analyzer:
15.2 Measuring range: 0~1%;
15.1.2 Maximum measurement error: ±1% of full scale;
4.15.1.3 Response time: less than 3S
15.2 Carbon dioxide CO2 analyzer:
15.2.1 Measuring range: 0~6%;
15.2.2 Maximum measurement error: ±1% of full scale;
15.2.3 Response time: less than 3S
16. Hydrocarbon concentration: Use ethane as the reference standard and use spectral analysis method for measurement.
16.1 Measuring range: 0~2000ppm;
16.2 Maximum measurement error: ±2% of full scale;
16.3 Response time: less than 6S
17. Nitrogen oxide concentration: measured by chemiluminescence or chemical analysis
17.1 Measuring range: 0~250ppm;
17.2 Maximum measurement error: ±2% of full scale;
17.3 Response time: less than 6S
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