1. In an evaporative cooling system using a surface conder. If ambient
conditions, steam flow and temmperatures are assumed to be constant.
Explain how the cooling water flow rate will affect the following:
- Cooling tower water outlet temperature.
- Cooling tower water inlet temperature.
- Condenser vacuum.
- Generator output.
- Heat rejected by cooling system.
2. In a steam turbine cycle, approximately 60% of the heat input is
thrown away in the cooling tower with no useful work from it. This is
a waste of energy. Why do designers and users accept it?

Hi, 
to your second question, I cannot tell you why the waste of hit is put
up with, but it isn't everywhere. Instead of wasting it in a cooling
tower, in Germany, the steam  is often passed through a heat converter
(right expression?)to heat water piped to heat surrounding buildings. 
That raises the question:  what do they do with the hot water in the
summer?  I don't know, maybe the heated water just circulates without
going through the radiators, and the system is less efficient then. 
Oh, I guess that doesn't matter as long as the steam condenses; if the
condensed water is warmer, less energy is needed to convert it back to
steam.
The only cooling tower I have seen in the States was so far out in the
country, that this solution was not feasible.