Originally posted by bornriding
Shop, Doc, Thank ya'll very much. I've enjoyed reading and discussing your replies.
Here is my second try at explaining what I mean.
I've always thought that the reason for conditioning the air in an area ( say a home ) was to mixed the existing air in the home with cooler air from tha a/c system, at a proper level ( cfm's ), which determines how fast ( or slow ) the air is 'mixed' ( for lack of better word ) and then returned to the unit.
To me, there were two factors in determining how long it would take a 'home' to cool down from the time the thermostat turned the unit on until the thermostat was satisfied. And they were, the amount of cool air delivered to the home ( and recirculated within ) and #2 - the temperature of that air that was delivered.
I'm talking the same home, whatever the heat gain.
So, I've got a certain home, with a certain heat gain, and say my unit is sized correctly.
I kinda, at this moment, don't consider humidity or latent heat because by the time the air is delivered to the home from the system, only sensible heat is being sent.
I'm also not talking about the effects on a system from raising or lowering the volume of air or the temp. of the air.
But, to me, the amount of air and the temperature of that air are the two factors that actually govern the time that the a/c system will have to run to 'satisfy the thermostat'. And if I can get more air from a system, and maintain the same temperature of the air then the effect will cool the area ( home) quicker at less expense ( electric bill )
Or, if I cannot get more air, but if I lower the sensible temperature of the same air that is now being delivered to the home, then the effect will cool the home quicker at less expense. ( realizing that too much of either one is bad )
One of my points, I guess, is that all I here about how to set up a system deals with 'superheat' and yet, everyone gives a range of values, such as 10 to 15 degrees superheat ( + - 5 ).To me, the difference between 10 & 15 degrees superheat is a difference in the supply air temperature ( I have done tests for this ). If I set a system at 15 degrees superheat, the supply air will be (say) 59 degrees. But by setting the superheat at 10 degrees, the supply air reduces to (say) 55 degrees. So I prefer to set a system at 10 degrees s/h so that my supply air temp will be lower.... and I actually think that I am doing right.
All this, knowing of course that I must be careful to avoid liquid getting to the compressor.
What's ya'lls thoughts??