Jet a1 density vs temperature table8/5/2023 With (5) - the final volume after pressure change can be expressed asĬombining (5b) with (1) - the final density can be expressed as: The minus sign corresponds to the fact that an increase in the pressure leads to a decrease in volume. The influence of pressure on the volume of a liquid can be expressed with the three dimensional Hooke's law Note! - volumetric temperature coefficients may vary strongly with temperature. volumetric expansion coefficient for some commonly used materials.Ρ 0 = initial density (kg/m 3) Volumetric Temperature Coefficients - β With (1) and (3b) the final density after a temperature change can be expressed as Β = volumetric temperature expansion coefficient (m 3/m 3 oC)ĭt = t 1 - t 0 = change in temperature - difference between final and initial temperature ( oC) When temperature increases - most liquids expands:ĭV = V 1 - V 0 = change in volume - difference between final and initial volume (m 3) V = specific volume (m 3/kg) Volume and change in Temperature The inverse of density is specific volume: The density of a liquid can be expressed as See also Water - Density, Specific Weight and Thermal Expantion Coefficient, for online calculator, figures and tables showing changes with temperature. The density of water versus temperature and pressure is indicated below: The density of a liquid will change with temperature and pressure.
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