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This can be found from the steam tables. www.x-eng.com gives steam tables. At different temperatures and pressures wolume of water can be found. To find the coefficient of expansion of water, find the volume at 5degree lower and 5 degree higher at same pressure. Take the mean and divide with the volume of water at desired temperature. Cross check the calculation for which you have the answer.

I have used the way and works well. The coefficient of expansion of water changes rapidly with temperature at constant pressure.

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12y ago
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14y ago

There is no easy answer, as this is close to the critical point of water, and it would not exist in a liquid state at normal pressures (since water was specified not vapour or steam). Since the coefficient is related to density, which is also pressure and temperature dependant, it may only be possible to determine the true value by experimentation, given precise conditions. I estimate that the value is likely to be below 6.3E-3, a guess might be 2.2E-3.

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13y ago

Volumetric Temperature Coefficients - β - of water : 0.00021 (1/oC)

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Q: Coefficient of thermal expansion of water at 300C?
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What is the final temperature of steam that is compressed from 4 MPa and 300C to 9 MPa isentropically?

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