Find the most up-to-date version of ASTM E at Engineering ASTM E() [ Withdrawn ].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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Suitable reducing valves and adaptors for 2 to 3. Before adding this water, satm the bomb, and drain the excess water, and xstm undried. Remember me Forgot password? For this concentration the energy of the reaction. If this limit is not met, repeat the entire series until a series is obtained with a standard deviation below the acceptable limit. Threads on the main closure should be checked frequently for wear. The jacket may be arranged so as to remain at constant temperature or with provisions for rapidly adjusting the jacket temperature to equal that of the calorimeter for adiabatic operation.
Directions for these corrections are given in Appendix X2. Standardization tests should be repeated after changing any part of the calorimeter and occasionally as a check on both calorimeter an operating technique.
Firing Circuit – A 6 to 16V alternating or direct current is required for ignition purposes with an ammeter or pilot light in the circuit to indicate when current is flowing. Commercially prepared pellets may be used provided they are made from National Bureau of Standards benzoic acid. Record this as the final temperature. Tap water may be satisfactory for use in calorimeter bucket. Detach the filling connection and exhaust the bomb in the usual manner. Isothermal Jacket Method 1.
ASTM E711 – 87 Gross Calorific Calorimeter
Either isothermal or adiabatic calorimeter jackets may be used. Equivalent platinum of palladium wire may be astmm provided constant ignition energy is supplied, or measured, and appropriate corrections made. The bomb shall be designed so that all liquid combustion products can be completely recovered by washing the inner surfaces.
Test Room – The apparatus should be operated in a room or area free of drafts that can be kept at a reasonably uniform temperature and humidity for e71 time required for the determination. Wastes used as fuel in as-discarded form with only bulky wastes removed. Differential stem correction 5 1 0. Current edition approved Aug. Make each determination in accordance with the procedure described in Section 11, and compute the corrected temperature rise.
The immersed portion of the stirrer shall be coupled to the outside through a material of low heat conductivity. Suitable reducing valves and adapters aetm 2 to 3. A number in parentheses indicates the year of last reapproval.
ASTM E711-87 (Re-approved 2004) – International Standards
It shall have a device for stirring the water thoroughly and at a uniform rate, but with minimum heat input. Take calorimeter readings at 1-min intervals until the same temperature is observed in three successive readings. Continuous stirring for 10 min shall not raise the calorimeter temperature more than 0.
Precision and Bias 6 Gross Anatomy Cheatsheet Gross Anatomy. The maximum qstm between any two test points shall not be more than 0. Unless otherwise indicated, it is intended that all reagents shall conform to the specifications of the Committee on Analytical Reagents of the American Chemical Society, where such specifications are available. Either isothermal or adiabatic calorimeter jackets may be used. The jacket may be arranged so as to remain at constant temperature or with provisions for rapidly adjusting the jacket temperature to equal that of the calorimeter for adiabatic operation.
Do not record time intervals since they are not critical in the adiabatic method. For this reason significant care should be exercised to obtain a representative laboratory sample for the RDF lot to be characterized. The standard solution 0. These thermometers shall be tested for accuracy against a known asttm preferably by the National Bureau of Standards at intervals no greater than 2.
It shall be made in accordance with the directions furnished by the calibration authority.
ASTM E (Re-approved ) – International Standards
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.
Due to the origins of RDF in municipal waste, common sense indicates that some precautions should be observed when conducting tests on the samples. Oxygen manufactured from liquid air, guaranteed to be greater than Your consent to our cookies if you continue to use this website.