Find the most up-to-date version of ASTM E at Engineering ASTM E() [ Withdrawn ]. Standard Test Method for Gross Calorific Value of Refuse-Derived Fuel by the Bomb Calorimeter. Designation: E – 87 (Reapproved ) Standard Test Method for. Gross Calorific Value of Refuse-Derived Fuel by the Bomb Calorimeter1 This standard.
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The bomb shall be designed so that all liquid combustion products can be completely recovered by washing the inner surfaces.
Precision and Bias 6 Your consent to our cookies if you continue to use this website. Oxygen manufactured from liquid air, guaranteed to be greater than Weights are measured in grams. Jacket – The calorimeter shall be completely enclosed within a stirred water jacket and supported so that its sides, top, and bottom are approximately 10mm from the jacket walls. The standard solution 0.
Equivalent platinum or palladium wire may be used provided constant ignition energy is supplied, or measured, and appropriate corrections made. Its size shall be such that the bomb will be completely immersed in water when the calorimeter is assembled. Controlled room temperature and humidity are desirable.
Either isothermal or adiabatic calorimeter jackets may be used. The indicator selected shall be used consistently in both calibrations and calorific determinations. If the bomb is lined with platinum or gold, all openings shall be sealed to prevent combustion products from reaching the base metal. Thermometer Accessories – A magnifier is required for reading mercury-in-glass thermometers to one tenth of the smallest scale division. It shall have a device for stirring the water thoroughly and at a uniform rate, but with minimum e7111 input.
Notify me of new posts by email. Allow 5 min for attainment of equilibrium; then record the calorimeter temperatures at 1min intervals for 5 min. There shall be no gas leakage during a test.
ASTM E711 – 87 Gross Calorific Calorimeter
The laboratory sample must be air-dried and particle size reduced to pass a 0. Determine the correction for HNO3, and firing wire. Sodium Carbonate, Standard Solution 0. Each millilitre of standard alkali is equivalent to ISO — International Standards. Suitable reducing valves and adapters for 2 to 3.
ASTM E (Re-approved ) – International Standards
Commercially prepared pellets may be used provided they are made from National Bureau of Standards benzoic acid. Isothermal Jacket Method 1. A aztm supers cript epsilon e indicates an editorial change since the last revision or reapproval. To be acceptable, the standard deviation of the series shall be 6. Detach the filling connection and exhaust the bomb in the usual manner.
Gross Calorific Value – the heat produced by combustion of a unit quantity of solid fuel, at constant volume, in an oxygen bomb calorimeter under specified conditions such that all water in the products remain in liquid form. It shall aatm constructed so that any water evaporating from the jacket will condense on the calorimeter.
A stepdown transformer connected to an alternating current lighting circuit or batteries may be used. Determine the sulfur content of the sample by any of the procedures described in Test Methods E There shall be no gas leakage during a test.
This pressure must remain the same for each calibration and for each calorific determination. The immersed portion of the stirrer shall be coupled to the outside through a material of low heat conductivity. Bomb parts should be inspected carefully after each use. If, by accident, the oxygen introduced into xstm bomb should exceed the specified pressure, do not proceed wstm the e7711.
Weight of sample – Thoroughly mix the analysis sample of solid fuel in the sample bottle, taking care that the heavies and lights fluff are distributed in the sample. Wastes used as fuel in as-discarded form with only bulky wastes removed. This is astk number that is multiplied by the corrected temperature rise in degrees and divided by the sample weight in grams to give the gross calorific value after thermochemical corrections have been applied.
The apparatus should be shielded from direct sunlight and radiation from other sources. Calorimeter – describes the bomb, the vessel with stirrer, and the water in which the bomb is immersed. Current edition asfm Aug. The pressure gage shall be checked periodically for accuracy. Before adding this water, rinse the bomb, and drain the excess water, and leave undried. Examine the bomb interior and discard the test if unburned sample or sooty deposits are found.
ASTM E711-87 (Re-approved 2004) – International Standards
Remove and measure or weigh the combined pieces of unburned firing wire, and subtract from the original length or weight to determine the wire consumed in firing. Summary of Test Method astn equal or better accuracy are satisfactory. The calorific value is computed from temperature observations made before and after combustion, taking proper allowance for thermometer and thermochemical corrections. Allow 5 min for attainment of equilibrium; then record the calorimeter temperatures Note 6 at 1-min intervals for 5 min.