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Online Thermal Cubic Expansion Calculator - Densities. This calculator can be used to calculate expansion volume when initial volume and initial and final densities for the liquid are known. V0 - initial volume (m3, ft3 ) ρ0 - initial density (kg/m3, lb/ft3 ) ρ1 - final density (kg/m3, lb/ft3 ) Density water.
Definitions, online calculator and figures and tables with water properties like density, specific weight and thermal expansion coefficient of liquid water at temperatures ranging 0 to 360°C (32 to 680°F).
Definition: Thermal Expansion in Two Dimensions. For small temperature changes, the change in area ΔA is given by. ΔA = 2αAΔT. where ΔA is the range area A, ΔT is the change in temperature, and α is the coefficient of linear expansion, which varies slightly with temperature.
Thermal expansion changes the space between particles of a substance, which changes the volume of the substance while negligibly changing its mass (the negligible amount comes from mass–energy equivalence), thus changing its density, which has an effect on any buoyant forces acting on it.
Thermal expansion in hot water systems: This article defines thermal expansion in water equipment in response to temperature, and explains the concomitant increase in system pressure. We show how to calculate hot water pressure increase in water heaters and boilers as a function of the increase in water temperature.
In general, objects expand with increasing temperature. Water is the most important exception to this rule. Water does expand with increasing temperature (its density decreases) at temperatures greater than 4 ° C (40 ° F) 4 ° C (40 ° F).
Thermal expansion is large for gases, and relatively small, but not negligible, for liquids and solids. Linear thermal expansion is ΔL = αLΔT, where ΔL is the change in length L, ΔT is the change in temperature, and α is the coefficient of linear expansion, which varies slightly with temperature.