Specific heat conversion factors

Conversion factors for mass, density, pressure, energy, specific energy, specific heat, thermal conductivity, dynamic viscosity, and kinematic viscosity in different systems of units are also given in Chap. 2 (Tables 2.1-2.9). 

Specific heat, heat capacity Conversion factor Critical Cutoff size... 

The specific heat is given in calmol K , so the right-hand side of Eq. (5.1) is in the units of cal. The mechanical work on the left-hand side of Eq. (5.1) is given in J. The conversion factor / has then the physical dimension calJ . Note that formally the conversion factor must be chosen (or inserted) in Eq. (5.1) to validate the equal sign. 

We need the specific heat capacity of iron and the conversion factor between joules and calories. 

In Example 7-1, the objective is to calculate a quantity of heat based on the amount of a substance, the specific heat capacity of that substance, and its temperature change. In solving the problem, we use the specific heat capacity as a conversion factor to convert a temperature change, in °C, to a quantity of... 

Although it has been noted that different types of metal surfaces of heating elements affect the pyrolysis process in a different manner (which is one of the reasons why the repeatability of the results in different laboratories is poor), it should be pointed out that the effect of the metal support on analytical pyrolysis must not always be regarded as a negative factor. Consider now some possible positive aspects of the influence exerted by the metal surface on pyrolysis (1) metal additives may improve the specificity of the pyrolysis products and enhance the selectivity of pyrolysis and (2) metal additives may in some instances improve the separation and simplify identification (as a result of the catalytic conversion of the pyrolysis products on metals). To enhance the effect of metal additives, one should not only use metals as the heating surface but also introduce them into the pyrolysed sample, e.g., by mixing the polymer with powdered metal. 

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