Preferred Label : British Thermal Unit 59 Degrees Fahrenheit;
NCIt synonyms : British Thermal Unit at 59 Degrees Fahrenheit; B.T.U. (59F); BTU (59F); B.Th.U. (59F);
NCIt related terms : [Btu_59]; British thermal unit (59 oF);
NCIt definition : A non-SI unit of energy equal to the amount of heat required to raise the temperature
of one pound avoirdupois of air-free water by one degree Fahrenheit (from 58.5 to
59.5 degrees) at a constant pressure of one atmosphere. The British thermal unit at
59 degrees Fahrenheit is based on the definition of the 15 degrees Celsius calorie
(exactly 4.1855 joules) and is equal to approximately 1.054804 kJ.;
Codes from synonyms : 13042;
Origin ID : C69151;
UMLS CUI : C2347207;
Semantic type(s)
- concept_is_in_subset
