Pick out the wrong statement.

'Solvates' are chemical compounds formed by solute with their solvents. When water is the solvent, then it is called a 'hydrate'

In heat exchanger calculations (Δt)weighted is used in place of Δt, when it involves more than one sequence of heating or cooling i.e., desuperheating & condensation or condensation & sub-cooling

In case of short tube vertical evaporators, area of central downtake is about 50 to 100% of the total tube cross-sectional area