Question

3: Water in an hl=17 cm deep pan is observed to boil at 101 C. Assume the saturation pressure is 101 kPa. At what temperature will the water in an h2=87 cm deep pan boil? The water density is 1000 kg/m”. Assume that the temperature difference is approximately proportional to the pressure difference in this region of temperature and pressure: the relationship is dT = 0.23 dp, in which the units of temperature and pressure are K and kPa, respectively. 2

Answer 1

When moving more heights, the pressure decreases, as a result, the boiling point decreases.

i.e. The boiling point of water at a height of 87 cm < 101 ^oC

At 87 cm, the boiling point of water = 101 - (101 * 0.23) =  77.77 ^oC