Contactor
02-04-2011, 10:47 PM
Hi Everyone:D
I have a system which I think is both oversized and suffering from very low load.
It's on R404 4c set point LP 1 or 1.5 bar, superheat always 15c or more
The superheat is excessive and not responding to the TEV (internally equalised) being opened, in fact I think this may just be making things worse.
I'm wondering if the evaporator is actually being flooded due to the extreme low load and whether or not to CLOSE the TEV in order to push back the dew point and bring about a good superheat.
I cant be sure that the condensing unit is oversized but think it probably is, so presumably without the TEV superheat set up correctly the compressor is at risk of pulling liquid regardless of how big it is?
I realise this will be a case of trial and error but wondered if anyone agrees with my theory or would like to comment?
Thanks:p
I have a system which I think is both oversized and suffering from very low load.
It's on R404 4c set point LP 1 or 1.5 bar, superheat always 15c or more
The superheat is excessive and not responding to the TEV (internally equalised) being opened, in fact I think this may just be making things worse.
I'm wondering if the evaporator is actually being flooded due to the extreme low load and whether or not to CLOSE the TEV in order to push back the dew point and bring about a good superheat.
I cant be sure that the condensing unit is oversized but think it probably is, so presumably without the TEV superheat set up correctly the compressor is at risk of pulling liquid regardless of how big it is?
I realise this will be a case of trial and error but wondered if anyone agrees with my theory or would like to comment?
Thanks:p