calc_internalenergychange¶

pychemengg.heattransfer.heatcommonmethods.calc_internalenergychange(mass=None, specificheat=None, deltaT=None)[source]¶

To compute change in internal energy due to temperature change.

Parameters

massint or float: Mass of object (solid, liquid or gas).
specificheatint or float: Specific heat of object.
deltaTint or float: Change in temperature of object.

Returns

internal energy change: int or float: Internal energy change due to change in temperature of object.

Notes

The following formula is used:

\[\Delta U = mC_p\Delta T\]

where:

m = change in internal energy

\(C_p\) = specific heat

\(\Delta T\) = change in temperature

\(\Delta U\) = change in internal energy

References

[1] G. F. Nellis and S. A. Klein, “Introduction to Engineering Heat Transfer”, 1st Edition. Cambridge University Press, 2021.

[2] Y. A. Cengel and A. J. Ghajar, “Heat And Mass Transfer Fundamentals and Applications”, 6th Edition. New York, McGraw Hill Education, 2020.

[3] T.L. Bergman, A. S. Lavine, F. P. Incropera, D. P. Dewitt, “Fundamentals of Heat and Mass Transfer”, 7th Edition, John Wiley, 2011.

Examples

First import the module heatcommonmethods.

>>> from pychemengg.heattransfer import heatcommonmethods as hcm 
>>> hcm.calc_internalenergychange(mass=4.686, specificheat=0.395,
                                  deltaT=150-100)
92.5485