Results 14 to 18 of 18
06-20-2012, 05:53 PM #14
I'm now just crossing my fingers that the compressors will start one way or another without a bypass. The solenoid valve idea is probably the best if they don't. One portable dehumidifier I had used one to bypass the cap tube for defrost, so they do exist for this size application. Of course the best way is to just get a TXV with a bleed port, but my project budget won't really allow for paying full new price for 2 txvs probably special ordered from somewhere, as I have not yet found a retailer that stocks any of that specific type and size, let alone any on ebay. It's a personal/school project, so ebay junk is acceptable and preferred. I know txv systems this small are not that common.
06-21-2012, 01:19 AM #15Professional Member
- Join Date
- Jun 2003
A scroll compressor normally won't start unequalized either, but they have an internal equalization feature. on shutdown the scrolls seperate and allow the pressure to equalize. A checkvalve at the discharge port prevents the whole charge from equalizing through the compressor.
06-30-2012, 09:16 PM #16
Been busy lately and hadn't had time to respond, but thanks for everyone's input. Sounds like a 3 in 1 is what i'm going to do.
06-30-2012, 10:25 PM #17
A 10% bleed on a 5 ton valve gives you 5.5 tons of capacity. There would be little difference in doing this or in piping a bleed port in parallel with the TEV, providing it isn't larger than 5% or so. If you have a distributor where would you pipe it in? It really ought to be piped into each circuit inlet, so the TEV can respond to the increased liquid flow in the evaporator and still maintain SH.
Why not just add a start kit to the compressor?
07-01-2012, 12:14 AM #18