13g of water evaporated during the heating of the water to 100°C yes
You are right I have used enthalpy of vaporisation, is this not correct? Is this also known as Hfg?
For your information, I have just tried the calculations with 2676 kJ/kg and it has raised the efficiency from 120% to 121%...
Hi there,
You are nearly right. It's my fault for not explaining the situation properly.
I had 1.8kg of water which was at 15°C, I boiled that in a kettle and timed how long it took to boil and switch off (310.4s). Then I did some calculations using specific heats to work out my kettles...
Homework Statement
Hi there,
I am trying to complete a thermodynamics assignment. I am doing fine until I get to the following question.
"Hx = Specific enthalpy at dryness fraction = hf + x . hfg" - I am not quite sure where Hf came from, I guess they want a value for Saturated liquid from...