2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000 degrees Celsius, to saturated steam at 2250.000kPa and 71.400% dry.

ANS = kJ

Not sure where to start. I need a little help please. I do have a chart with the properties of saturated steam. Thank you.

To determine the quantity of heat required to raise water to saturated steam at a specific temperature and pressure, you can use the equation:

Q = m * (hf + hfg * x)

Where:
Q is the quantity of heat required (in kilojoules)
m is the mass of water (in kilograms)
hf is the specific enthalpy of saturated liquid water at the initial temperature and pressure (in kilojoules per kilogram)
hfg is the specific enthalpy of vaporization (latent heat of vaporization) at the initial temperature and pressure (in kilojoules per kilogram)
x is the dryness fraction (also known as quality), which is the ratio of the mass of dry steam to the total mass of the steam (between 0 and 1)

To solve the problem, you need to find the values of hf and hfg from the chart of properties of saturated steam. Once you have those values, you can substitute them into the equation along with the given values of mass (m) and dryness fraction (x), and calculate the quantity of heat (Q) required.

Let's say you find hf to be 302.3 kJ/kg and hfg to be 2273.5 kJ/kg from the chart. You also have the mass (m) of the water as 11.100 kg and the dryness fraction (x) as 0.714.

Now, substitute these values into the equation:

Q = 11.100 kg * (302.3 kJ/kg + 2273.5 kJ/kg * 0.714)

Simply calculate the expression on the right side of the equation, and you will obtain the quantity of heat required (Q) in kilojoules.