Find the most up-to-date version of ASTM E at Engineering ASTM E() [ Withdrawn ].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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Gross Anatomy Cheatsheet Gross Anatomy. Determine the sulfur content of the sample by any of the procedures described in Test Methods E If this limit is not met, repeat the entire series until a series is obtained with a standard deviation below the acceptable limit.
If, by accident, the oxygen introduced into the bomb should exceed the specified pressure, do not proceed with the combustion.
The apparatus should be shielded from direct sunlight and radiation from other sources. The weight of solid fuel sample and the pressure of the oxygen admitted to the bomb must not exceed the bomb manufacturer’s recommendations. Carefully weigh approximately 1 g of the sample directly into the crucible in which it is to be burned or into a tared weighing scoop from which the sample is transferred to the crucible. The weight of the pellets of benzoic acid in each series should be regulated to yield the same temperature rise as that obtained with the various samples tested in the individual laboratories.
It shall have a device for stirring the water thoroughly and at a uniform rate, but with minimum heat input.
ASTM E (Re-approved ) – International Standards
Oxygen – free of combustible matter. Carefully weigh approximately 1g of the sample directly into the crucible in which it is to be burned or astmm a tared weighing scoop which the sample is transferred to the crucible. Recommended hygienic practices include use of gloves when handling RDF and washing hands before eating or smoking. The calorific value is computed from temperature observations made before and after combustion, taking proper allowance for thermometer and thermochemical corrections.
Wastes used as fuel aetm as-discarded form with only bulky wastes removed. Determine the correction for HNO3, and firing wire. The bomb shall be designed so that all liquid combustion products can be completely recovered by washing the inner surfaces. Continuous stirring for 10 min shall not raise the calorimeter temperature more than 0. For this purpose, any individual run may be discarded only if there is evidence indicating incomplete combustion. During ignition of a sample, the operator shall not permit any portion of his body to extend over the calorimeter.
There shall be no gas leakage during a test. Its size shall be such that the bomb will be completely immersed in water when the calorimeter is assembled.
Water in Bomb – Add 1. It shall have a device for stirring the water thoroughly and at a uniform rate, but with minimum heat input. Allow 5 min for attainment of equilibrium; then record the calorimeter temperatures at 1min intervals for 5 min. The maximum difference between any two test points shall not be more than 0. Calorimeter – describes the bomb, the xstm with stirrer, and the water in which the bomb is immersed. Isothermal Jacket Method 1.
Record the initial temperature and fire the charge.
ASTM E – 87 Gross Calorific Calorimeter – PDF Free Download
Differential stem correction 5 1 0. Examine the bomb interior and discard the test if unburned sample or sooty deposits are found. Made to help students memorize the basics of muscles.
The apparatus should be shielded from direct sunlight and radiation from other sources. Adjust the jacket temperature to be equal to or slightly lower than the calorimeter, and run for 5 min to obtain equilibrium. This pressure must remain the same for each calibration and for each calorific determination. After the rapid-rise period about 4 to 5 minrecord temperatures at 1-min intervals on the minute until the difference between successive readings has been constant for 5 min.
Firing wire shall be mm of No. Either isothermal or adiabatic calorimeter jackets may be used. The value of heat of combustion of benzoic acid, for use in the calibration calculations, shall be in accordance with the value listed in the National Bureau of Standards certificate issued with the standard. The crystals shall be pelletized before use. Its size shall be such that the bomb will be completely immersed in water when the calorimeter is assembled.
Thermometer Accessories – A magnifier is required for reading mercury-in-glass thermometers to one tenth of the smallest scale division. Due to the origins of RDF in municipal waste, common sense indicates that some precautions should be observed when conducting tests on the samples.
The switch should be depressed only long enough to fire the bomb. We share information about your activities on the site with our partners and Google partners: To be acceptable, the standard deviation of the series shall be 6. Save my name, email, and site URL in my browser for next time I post a comment.
ASTM E711 – 87 Gross Calorific Calorimeter
The bomb shall be designed so that all liquid combustion products can be completely recovered by washing the inner surfaces. Purity of Reagents – Reagent grade chemicals shall be used in all tests.
Allow 5 min for attainment of equilibrium; then record the calorimeter temperatures Note 6 at 1-min intervals for 5 min. Commercially prepared pellets may be used provided they are made from National Bureau of Standards benzoic acid.
Determine the energy equivalent of the calorimeter as the average of a series of ten individual runs, made over a period of not less than 3 days or more than 5 days. Oxygen manufactured from liquid air, guaranteed e71 be greater than Weigh the sample to the nearest 0.
The immersed portion of the stirrer shall be coupled to the outside through a material of low heat conductivity. Observations, Adiabatic Jacket Method – Assemble the calorimeter in the jacket and start the stirrer. It shall be constructed so that any water evaporating from the jacket will condense on the calorimeter.
Sodium Carbonate, Standard Solution 0.