Quote Originally Posted by tim- View Post
kayl, not really in chillers but dual evap systems and such, also trying dualcap in one evaporator. Havn't got the time to play with tha last parts enough to make a real statement however it's an advantage or not.

experimenting is fun, but as you said hard to make a conclusion with lots of testing.


Filled the cascade last night, initial pull down the cascade pulls around 2000w from the mains both stages running. Once both stages are down to temp the meter flicks between 1277w and 1600w.
First stage was filled with r290/r507 and a fair amount of r410a. Idle I got -51c on the second stage liquid line leaving the 20plate HX. Pressures were about 1Hg low and 230PSI high. At load the first stage was around -48c.





The second stage took a lot of gas, im almost out now of ethylene. Theres 1.8m^3 in my D size bottle and has lasted me just over 2 years now


When I turn on the load tester the cascade will run for 5mins or so and then the mains trips out at the power multi board. This happen 3 times before I decide to just slap it on the computer. It happened again soon as I loaded the PC, so I guess next run ill have to run an extension power cord and power the PC off a different mains circuit to the cascade