BS 7420:1991

Committees responsible
Foreword
Guide
0. Introduction
1. Scope
2. General
3. Definitions
4. Symbols
5. Determination of calorific values of solid and
     liquid fuels
6. Determination of calorific values of gaseous fuels
Appendix
A. Bibliography

Includes definitions of different calorific values calculated on the basis of either constant pressure or constant volume.

This British Standard gives guidance on the determination of calorific values of solid, liquid and gaseous fuels. It includes definitions of different calorific values calculated on the basis of either constant pressure or constant volume, and with the water produced present either in the liquid or the vapour phase. The standard gives conditions for the experimental determination of calorific values and presents details of how to interconvert numerical values of differently defined calorific values.

It is sometimes necessary to convert a calorific value determined for a known set of specified conditions to the corresponding calorific value for a different set of conditions, and this standard gives guidance on calculations by means of which this may be achieved.

NOTE 1 The titles of the standards publications referred to in this standard are listed on the inside back cover.

NOTE 2 Details of the other publications referred to in this standard are listed in the bibliography in Appendix A.