Hi,
As a rule of thumb, what are maximum case temperatures of small compressors? Stat cooled in particular. Is it worthwhile to make a distinction between the "average" temperature of the housing and the peak temperatures of the housing immediately adjacent to the HP line?
My reasons for...
Hi,
Are the sales of _all_ refrigerants in the US restricted, or only the eco-nasty ones?
At least as of a couple years ago, most industrial supply catalogs made it clear that the sale of CFC's and HFC's(?) were restricted, but the implication was that the sale of other refrigerants was not...
Hi,
I have a "coldfinger" unit consisting of a compressor joined to a flatish-tube spiral coldfinger by a flexible line. What's a bit strange to me is that in this unit and in similar units I've seen, it appears as if there is a single line to the coldfinger. I've considered the possibility...
Hi,
Anyone know off hand the complement of components used in modern single-stage freeze dryer and vacuum trap type units? What is the preferred refrigerant and oil complement? Are "special" compressors needed? I have older units that achieve -60C quite easily
air-cooled at "room" temperatures...
