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orion_
11-10-2017, 08:27 PM
Hi -

My question is in the title, what is a typical range for discharge superheated degree in VRF systems in cooling mode only? By discharge superheated degree I mean the difference between the discharge pipe temperature and condensing temperature.

Thank you for your help!

Tayters
11-10-2017, 11:03 PM
Condense around 40°C, discharge pipe below 100°, probably somewhere around 80°, give or take a bit.

frank
12-10-2017, 02:30 PM
The discharge gas temperature can range anywhere between 55C up to 100C, depending on load and ambient temperature.
The inverter compressor safety normally kicks in around 106C by backing off the hz

Condensing temperature is normally ambient + 15K

mbc
12-10-2017, 04:43 PM
Hi
it is depends to our design in system
and it is different in what kind of compressor you have
is it recips or screw
our outlet pressure is related to our ambient temp and our condenser type (air cooled or water cooled or evaporator condenser ) from that we can find our out let temp from condenser
air cooled = ambient temp + 6 t0 10 c
water cooled = ambient + 5 C
also out let temp in recips compressor related to how cylinders is cooled and oil cooler temp

Also our gas and our suction pressure is very important
in PH diagrams if it goes down our temp goes to high side .

orion_
12-10-2017, 05:10 PM
Thanks a lot!