Chiller Evaporators & Condensers = Input & Output

I've talked about this concept before but it's something to ponder on.

What is the evaporator and condenser in a chiller? I mean this at their most basic levels.

It's funny some of the answers a question like this draws in. It almost makes me want to leave this here and let the comments go first....lol

You know I can't help myself. I'll post tomorrow with my actual answer but go to the comments and try to break what these are down to their simplest form. 

I'll give a hint, I describe them both using only two words. 

The simplest way I've come to view evaporators and condensers is input/output devices.

Yes there is a lot of refrigeration effect and mechanical compression happening.

In their simplest form though. Evaps take heat in (input) and the condenser rejects heat out (output).

This also means the condenser only has to reject as much heat as the system takes in. I say system because the evaporator is not the only heat load device in the system.

The compressor is the other primary heat source in a chiller. Whether that's heat of compression or motor cooling.

So in total the condenser rejects the total heat gained in the refrigeration cycle.

This also means that we need X amount of temp difference from the mediums to get the rate of exchange required. As there is more heat then our difference must be higher to achieve our goals. This is a whole discussion on it's own.

MTT

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