Old spec Tutorial 1 Problem 8 (ENGR5003) - Revisica

Old spec Tutorial 1 Problem 8TutorialOld spec ENGR217Third6 min

ENGR217 (old spec) Thermo L6 Tutorial 1, Problem 8 official answers

Water is heated in a vertical cylinder, closed at the top by a moveable piston. The piston has a mass of 30 kg and a cross-sectional area of 0.006 $\mathrm{m^2}$ . If the local atmospheric pressure is 101.325 kPa, determine the temperature at which the water starts boiling.

Formulas you may need

Piston equilibrium: $p = p_{atm} + \dfrac{mg}{A}$ (learn this)
Linear interpolation in the saturation (pressure) table (learn this, Lecture 9)

pressure under the piston =kPa

boiling temperature =C

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