- Author
-
Mansson, M.
- Title
- Determinations of Calorific Values of Building Materials: A Guide. NORDTEST Project 871-90.
- Coporate
- Statens Provningsanstalt, Boras, Sweden
- Report
-
SP Report 1991:16
1991
37 p.
- Distribution
- Available from National Technical Information Service
- Keywords
-
building materials
|
construction materials
|
fire hazards
|
heat of combustion
|
reaction kinetics
|
calorimeters
|
thermodynamic properties
|
test methods
|
mathematical models
|
standards
- Identifiers
- calorific value; heat of reaction
- Abstract
- An account is given of the definitions and principles involved in measurements of calorific values (energies of combustion). The use of calorimeters with different working principles--in particular isoperibol and adiabatic calorimeters--is disucssed and directions are given for performing the measurements in the proper manner. The basis for the corrections for heat exchange between the calorimeer and its surrounding thermostat is reviewed and a set of equations for the evaluation of the so-called corrected temperature rise provided. The calibration of the calorimeter by combustion of benzoic acid is described in detail. Furthermore, instructions are given on how to handle difficult-to-burn materials and what types of analyses are required on the bomb contents after combustion. The necessity for defining, in the standard method, what the reference states for the products of combustion are supposed to be for various type materials is discussed. Equations are given for corrections for side reactions and for reactions taking the products to specified reference states. Equations are also given for the calculation of the gross and net calorific values.