64 resultaten gevonden voor 'use value'

in-use condition grading

act of collective judgement of all qualitative information of in-use conditions ( within a factor class (3.1.39)

net calorific value at constant volume

absolute value of the specific energy of combustion, for unit mass of a solid fuel burned in oxygen under conditions of constant volume and such that all the water of the reaction products remains as water vapour (in a hypothetical state at 0,1 MPa), the other products being as for the gross calorific value, all at the reference temperature[SOURCE: ISO 1928:2009, definition 3.1.3]

theoretical minimum net calorific value

fraction of the energy released on combustion sufficient to adiabatically heat the post-combustion substances of a material or product and excess air from a specified ambient temperature to a specified final temperature