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1 BTU is the amount of energy needed to heat one pound of water by one degree Fahrenheit. Therefore, the exact relationship of BTU to joules and other energy units depends on the temperature at which BTU is measured. 59 °F (15 °C) is the most widely used reference temperature for BTU definition in the United States.
- 1.5: Unit conversions
Conversion factors. The conversion factors are derived from...
- 1.5: Unit conversions
Table of coefficients for energy unit conversion between atomic unit (hartree), joule (J), electron volt (eV), cm-1, kJ/mol, and kcal/mol.
The conversion factors in the following table are derived by the physical constants of: Light speed in vacuum: $c = 299\ 792\ 458\ \texttt{m}\cdot \texttt{s}^{\texttt{-1}} $ ; Planck constant: $ h = 6.626\ 070\ 15 \times 10^{-34}\ \texttt{J}\cdot \texttt{s} $ ; Ideal gas constant: $R = 8.314\ 462\ 618\ \texttt{J}\cdot \texttt{mol}^{\texttt{-1 ...
FACTORS FOR UNIT CONVERSIONS. Prof. Faith A. Morrison Department of Chemical Engineering. Quantity. Equivalent Values. Mass. 1 kg = 1000 g = 0.001 metric ton = 2.20462 lbm = 35.27392 oz. 1 lbm = 16 oz = 5 x 10‐4 ton = 453.593 g = 0.453593 kg. Length.
Conversion factors. The conversion factors are derived from equality between the given unit and the desired unit. For example, 1 cm = 10 -2 m is equality between centimeter and meter. The conversion factors are derived from the equality by the following steps.
The conversion relations in this table are commonly used to equate masses and weight assuming a nominal value for g at the surface of the earth. 2 BTU is the amount of energy needed to heat one pound of water by one degree Fahrenheit. Therefore, the exact relationship of BTU to joules and other energy units depends on the temperature at which ...
Therefore, the exact relationship of BTU to joules and other energy units depends on the temperature at which BTU is measured. 59 °F (15 °C) is the most widely used reference temperature for BTU definition in the United States. At this temperature, the conversion factor is the one provided in this table. ↵.
