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Теплоемкость флюида

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Specific Heat Capacity


Isobaric specific heat capacity 

LaTeX Math Inline
bodyc_{p}(P,T) = \frac{1}{m} \frac{dQ}{dT} \big|_{P = const}

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Isochoric specific heat capacity 

 

 

LaTeX Math Inline
bodyc_{v}(P,T)= \frac{1}{m} \frac{dQ}{dT} \big|_{V = const}

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Thermal conductivity


 

LaTeX Math Inline
body\bar j = \frac{dQ}{dt \ dS} \ \bar n_{dS} = \lambda(P,T) \bar \nabla T
 – дифференциальный тепловой поток через площадку 
LaTeX Math Inline
bodydS

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Temperature conductivity


 

LaTeX Math Inline
bodya(P,T) = \frac{\lambda}{c_{p} \ \rho}

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Reference values for popular fluids



LaTeX Math Inline
body\rho, \ 10^3 \ \ кгrm kg/м^3m^3

LaTeX Math Inline
bodyС_р, \ кДж\rm kJ/(кг kg \cdot °С)

LaTeX Math Inline
body\lambda , \ \ Втrm W/(м m \cdot °С)

LaTeX Math Inline
bodya, \ 10^{-6} \ \ м^2rm m^2/сs

газgas





нефтьoil

 0.65 – 1.05

(0.82 – 0.95)*

1.7 – 2.1

0.12 – 0.14

0.07 – 0.09

водаwater

1

4.183

0.6

0.14

* – наиболее популярные значения на практике