Evap design...

[hatemi]

As my direct die project is getting started I have started to think about the evaporator designs. The materials that are easy to get here are basically 10cm x 1 cm copper rods and that is what I'm going to use. Maze desingn on two layers. Two of those 1cm plates on top of each other and a thin copper sheet in between to separate the two chambers.

My plan is to either use drill press or get them machined somewhere. Propably the drill pres is the way I m going to go.

The guestion here is how large (wide/deep) should the groove be or does it realy matter that much? Would 5mm wide and 6 mm be deep be enough? what is the best thickness of the base? My plan is to make the evap roughly 5cm x 5cm x 2 cm. Would I be better off with sepperate base and top plates and making the groove 1cm deep?

The compressor I am going to use is Danfoss NL11F(if I still can get ahold of one) loaded with R404a

[FUGGER]

Based upon distance taveled in the maze, I would guesstimate that the channel would need to be greater than 1/4" or close to.

You would need to base your charge on how much cooling got back to the compressor under full load. I would start out with running at eight inches of vacuum and add coolant as needed.

Imperfections are good, threaded or checkered surface area would be better.

Im a noob at this too, just a guesstimate.

[hatemi]

So I would be better of with seperate top and baseplates? Roughly 7x10mm channels? And its deffinantly not going to be smoothly milled if I do it with drill press so lots of nice turbulences inside;) hmm...back to paint making some pictures.

[hatemi]

Here is a fine example of my paint skills;) But it helps to understand how I 'm thinkin of making it.

[TheDogFather]

I thought this maze on top of maze design was redundant unless it was going to be mounted upside down ?

TDF.

[hatemi]

Any improvements I could make in the design? Or any other ralatively easy but yet effective designs? It would seem that drill press is the tool I'm going to use so that limits my possobilities somewhat...