Lecture 8 example - double interpolation in the superheated table (ENGR5003) - Revisica

Lecture 8 example - double interpolation in the superheated tableTutorialCurrent specThird6 min

ENGR5003 Lecture 8 double interpolation example (slides 17-18)

Find the specific enthalpy of superheated steam at 18.5 bar and $432\ ^\circ\mathrm{C}$ , using the superheated table values below (h in kJ/kg).

p (bar)	h at 400 C	h at 450 C
15	3256	3364
20	3248	3357

Formulas you may need

Linear interpolation: $\dfrac{y - y_1}{y_2 - y_1} = \dfrac{x - x_1}{x_2 - x_1}$ (learn this, Lecture 8-9)

h =kJ/kg

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