I am working on a walk-in freezer that has a Tecumseh condensing unit (Copleand compressor, receiver, small condenser with fan) and right next to it is a larger Heatcraft condenser with a fan. See attached pictures. The piping in question is on the high pressure side.
Normally, the piping on a condensing unit coming straight from the factory has the hot gas discharge from the compressor going into the top of the condenser and coming out liquid at the bottom of the condenser. This line then goes into the receiver inlet. Finally, the receiver outlet with the valve goes directly to the TXV. All in all, long story short the receiver is closest to the TXV.
Now in my scenario which I am about to describe has the receiver in between the two condensers. Here it goes, please stay with me now. The piping starts out at the hot gas discharge from the compressor. The discharge line goes into the larger Heatcraft condenser. It then exits the Heatcraft condenser and goes directly into the receiver inlet. The receiver outlet with the valve now goes into the top of the small condenser. Finally, the bottom of the small condenser goes directly to the TXV. All in all, long story short the small condenser is closest to the TXV.
My main questions are: Shouldn't the receiver also be closest to the TXV in this setup as well? Is this piped in wrong? Or is this a perfectly acceptable method? What are the consequenses of leaving it like this? Why are they using two condensers?
By the way, as you can see by the picture part of the compressor is frozen, superheat at the evap is 30*, and my box temp only goes down to about 10*.
Your comments would be very much appreciated.
Normally, the piping on a condensing unit coming straight from the factory has the hot gas discharge from the compressor going into the top of the condenser and coming out liquid at the bottom of the condenser. This line then goes into the receiver inlet. Finally, the receiver outlet with the valve goes directly to the TXV. All in all, long story short the receiver is closest to the TXV.
Now in my scenario which I am about to describe has the receiver in between the two condensers. Here it goes, please stay with me now. The piping starts out at the hot gas discharge from the compressor. The discharge line goes into the larger Heatcraft condenser. It then exits the Heatcraft condenser and goes directly into the receiver inlet. The receiver outlet with the valve now goes into the top of the small condenser. Finally, the bottom of the small condenser goes directly to the TXV. All in all, long story short the small condenser is closest to the TXV.
My main questions are: Shouldn't the receiver also be closest to the TXV in this setup as well? Is this piped in wrong? Or is this a perfectly acceptable method? What are the consequenses of leaving it like this? Why are they using two condensers?
By the way, as you can see by the picture part of the compressor is frozen, superheat at the evap is 30*, and my box temp only goes down to about 10*.
Your comments would be very much appreciated.
