ASTM D5865 PDF
ASTM-D – Download as PDF File .pdf), Text File .txt) or read online. Find the most up-to-date version of ASTM D at Engineering ASTM D Standard Test Method for Gross Calorific Value of Coal and Coke. standard by ASTM International, 10/01/ View all product details.
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ASTM D – International Standards
The first and most obvious is the temperature sensing probe itself. An ammeter or pilot light can be used in the circuit to indicate when current is flowing. The same indicator shall be used for both calibration and calorific value determinations. The gross calorific value can be used for computing the calorific value versus sulfur content to determine whether the coal meets regulatory requirements asstm industrial fuels.
Automated Calorimeter – a calorimeter which has a microprocessor that takes the thermometric readings and calculates the Calibration Value and the Heat of Combustion Values. No other units of measurement are included in this standard. The calorific value of the analysis sample is computed by multiplying the corrected temperature rise, adjusted for extraneous heat effects, but the heat capacity and dividing by the mass of the sample.
Mechanical supports for the calorimeter vessel shall be of low thermal conductivity. Calorific Value – the heat produced by combustion of a unit quantity of a substance under specified conditions.
Standard Test Method for Gross Calorific Value of Coal and Coke
The gross calorific value can be used to evaluate the effectiveness of beneficiation processes. Replace cracked or significantly worn parts. Net Calorific Value net heat of d586 at constant pressureQp net – the heat produced by combustion of a substance at a constant pressure of 0. The heat capacity of the calorimeter is determined by burning a specified mass of benzoic acid in oxygen.
ASTM D5865-12 – International Standards
Dd5865 is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability aatm regulatory limitations prior to use. Balance – a laboratory balance capable of weighing the analysis sample to the nearest 0. Discussion – The heat capacity can also be referred c5865 as the energy equivalent or water equivalent of the calorimeter. The immersed portion of the stirrer shall be accessible to the outside through a coupler of low thermal conductivity.
Check the pressure gauge annually for accuracy or after any accidental over pressures that reach maximum gauge pressure. The gross calorific value can be required to classify coals according to Classification D A convenient standard solution may be prepared as follows.
A step-down transformer connected to an alternating current circuit, capacitors, or batteries can be used.
Reagent Water – Conforming to conductivity requirements for Type II of Specification D for preparation of reagents and washing of the bomb interior. For calorimeters having a bucket it can be a separate component of the bomb. These types of thermometers consist of two major subsystems. Sample Holder – An open crucible or platinum, quartz, or base metal alloy.
For both subsystems, the relationship between the thermometer resistance and temperature shall be well characterized. Leave a Reply Cancel reply Your email address will not be published.
Standard – Standard Test Method for Gross Calorific Value of Coal and Coke ASTM D –
Do not fire the bomb if there is evidence of gas leakage when the bomb is submerged in the calorimeter vessel. This test method pertains to the determination of the gross calorific value of coal and coke by either an isoperibol d565 adiabatic bomb calorimeter.
Sorry, your blog cannot share posts by email. Assessing the valid working range of the calorimeter, as outlined in Additional precautions are noted in Practice E Ignition Circuit – A V alternating or direct current is required for ignition purposes. The stirrer speed shall remain constant to minimize any temperature variations due to stirring.
Heat Capacity – the energy required to raise the temperature of the calorimeter one arbitrary unit. Also consult the calorimeter equipment manufacturer’s installation and operating instructions before using the calorimeter. The magnifier shall have a lens and holder designed so as to minimize errors as a result of parallax.