Effects of Temperature Changes on Fluid Properties

The rise in temperature will tend to reduce the density of any fluid. When the fluid is confined in a vessel of fixed volume, the result of a temperature change will based on whether the fluid is compressible.

When the fluid is a gas, it will react to a temperature change in a way predicted by the ideal gas laws. A 5% rise in absolute temperature will outcome in a 5% rise in the absolute pressure.

When the fluid is an incompressible liquid in a closed vessel, a rise in the temperature will have extremely greater and potentially catastrophic effect. Since the fluid temperature rises, it tries to expand, though expansion is prevented by the walls of the vessel. Since the fluid is incompressible, this outcomes in an incredible rise in pressure for a relatively minor temperature change. Alter in specific volume for a given change in temperature is not similar at different starting temperatures. The resultant pressure changes will differ. A useful thumb rule for water is that pressure in a water-solid system will rise around 100 psi for every 1 °F rise in temperature.