Morphing Air Conditioner into Autocascade System

[mytekcontrols]

What can you do with those flow factors?

You know to tell you the truth I forget what the flow factors in the chart actually equate to. So you might ask what good is it?

Well actually a lot of good:

1. Find all the flow rates for captubes in an existing "working" system
2. Compare existing system compressor displacement to new design's compressor
3. Re-calculate captube flow rates based on the percentage of displacement change
4. Find appropriate captubes in chart with same flow factor

So take a base working system as shown in Post #87, then decide how much displacement you intend to use, and get the percentage of change from the Tecumseh AJA4512-AXD as used, and apply it.

example:

• Captube #1 = 81"x0.055id = flow factor of 0.671 (extrapolated from chart)
• Let's say the compressor you intend to use is 75% as much displacement as the AJA4512-AXD.
• 0.75(75%)x0.671(original CT#1 flow) = new CT#1 flow factor = 0.503
• 90"x0.050 = a flow factor of 0.502 (from chart) close enough match

Ya it will oval the tubing sadly, but I havent a good tool otherwise for bending 1/2" properly. What do you use?

I use something like this: Grainger 1/2" tubing bender w/1.5" bend radius