stupid chiller question

Willow · #1 01-18-2005, 12:33 AM

so i am going to plumb everything this week and i forgot how i had the chiller plumbed. it's an inline chiller with 2 pipes in the top. does it matter which input/output pipe i use? does the water have to go through the chiller in a specific direction or does it matter? sorry it sounds confusing the way i am explaining it doesn’t it.

G1GY · #2 01-18-2005, 01:37 AM

Unless it's marked it shouldn't matter. It's just like a heat exchanger, either way works the same unless the pipes are one over top of the other. In this case the top one would be the (Warm) inlet and the bottom would be the (cool) return.

Bryan · #3 01-18-2005, 01:48 AM

Depends on the chiller exchanger desifn. If the inlet and outlets are mounted vertically the water should flow from the bottom to the top. If horizontal, doesn't really matter.

Willow · #4 01-18-2005, 01:53 AM

nope they are side by side. so i doesn’t matter then right?

G1GY · #5 01-18-2005, 02:06 AM

Quote:

Originally Posted by Bryan

Depends on the chiller exchanger desifn. If the inlet and outlets are mounted vertically the water should flow from the bottom to the top. If horizontal, doesn't really matter.

On a heat exchanger the normal rule of thumb is Hot in on the top, and cool out on the bottom.

Bryan · #6 01-18-2005, 06:06 AM

Quote:

On a heat exchanger the normal rule of thumb is Hot in on the top, and cool out on the bottom.

I stand corrected. But then doesn't it depend on where the inlet of the freon line enters the exchanger. I would assume that is the cold end?

G1GY · #7 01-18-2005, 06:13 AM

Quote:

Originally Posted by Bryan

Quote:

On a heat exchanger the normal rule of thumb is Hot in on the top, and cool out on the bottom.

I stand corrected. But then doesn't it depend on where the inlet of the freon line enters the exchanger. I would assume that is the cold end?

Nope. Heat rises, so the cooler liquid will exit at the bottom.

Bryan · #8 01-18-2005, 06:18 AM

Ok, my chiller has the freon entering the bottom of the exchanger, returning back to the compressor at the top of the exchanger.

Saying that, then should I be plumbing the tank water from the top of the exchanger and returning to the tank from the bottom of the exchanger?

G1GY · #9 01-18-2005, 08:24 AM

Quote:

Originally Posted by Bryan

Ok, my chiller has the freon entering the bottom of the exchanger, returning back to the compressor at the top of the exchanger.

Saying that, then should I be plumbing the tank water from the top of the exchanger and returning to the tank from the bottom of the exchanger?

I'm not realy sure about your chiller, in fact I realy don't think it will make a whole lot of difference where it goes in and out since the exchanger is a closed loop (as far as the freon cool exchanger is concerned). Maybe the compressor is right under the exchanger, thus causing the bottom to be warmer than the top by the heat given off by the compressor. Most of the exchangers I work with have all the pumping equipment mounted independent of the exchanger and the high (hot), low (cool) rule usualy applies. I have a feeling that in this case it doesn't apply. If the two conections are not marked inlet/outlet or have arrows indicating flow direction, it more than likely makes no difference.

Sorry if I had you worried about your set up with my post.

StirCrazy · #10 01-18-2005, 12:59 PM

your inlet and out let should be labeled as it is important for the water flow through a chiller.

the reason for this is at no time can that coil be empty so the water should flow through it in such a manor that it will keep the coil full of water at all times. so inside your unit depending on how the coil is orientated will tell you how to plumb it. if there is no arrows or words check the manual and see if it says, failing that call the company and ask them if it matters. if the coil is sitting up and down it might not matter as much but that would be a unusual way to mount it.

Steve