Over the range 720-1900 r the specific heat of air may be, Ask an Expert

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Over the range 720-1900 R, the specific heat of air may be approximated by the equation.

One pound-mass of air is heated at constant pressure from 300°F to 1300°F. Calculate the required thermal energy input if:

a) The specific heat is assumed constant at its room-temperature value.

b) The specific heat is assumed constant at a value corresponding to that at the mid-point of the temperature range (800°F).

c) The specific heat is assumed to vary constantly according to the approximate equation.

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