What are these?

[ascj]

I was at a warehouse the other day and notice higher than normal SH at the compressors. I then notice these boxes on the lines. Getting about a 10-20 degrees drop across them.

[MikeySq]

possibly a boxed in suction filter houising??

[ascj]

Also they are riveted together. I was going to unscrew one to take a peak.

[mr kev]

I am very curious! Once you find a way up there please let me know what they are and why they are mounted so far out of reach. If it were a suction can they sure did put it in the worst spot

[ascj]

I am very curious! Once you find a way up there please let me know what they are and why they are mounted so far out of reach. If it were a suction can they sure did put it in the worst spot

I went up to them. They are a rectangle box with riveted ends. Both the suction and liquid line run through it. It almost seems like some kind of exchanger between the two lines.

They are on all 18 Kramer units in the building.

[mr kev]

Probably an inline subcooler. Basically a pipe within a pipe and uses cool return gas to subcool the liquid line.

[rcbuddy]

Liquid/Suction Heat Exchanger creatively boxed in to hide bracing?

[jpsmith1cm]

Did you check the liquid line, too?

Maybe just a suction to liquid HX. Common enough component.

[ascj]

Did you check the liquid line, too?

Maybe just a suction to liquid HX. Common enough component.

Yeah I did....and that's what kinda got me. I didn't get any real temp difference on the liquid. Mind you, I only checked the one I was working on.(they are a bit a pain the ass to get to)

[y7turbo]

They have them on the 2 Kramer Thermobank systems we service. From the piping diagram I looked at, its a suction - liquid heat exchanger.

[mr kev]

They have them on the 2 Kramer Thermobank systems we service. From the piping diagram I looked at, its a suction - liquid heat exchanger.

Yes you are correct. A thermobank is basically a heat exchanger that you fill with water and it helps maintain some heat in the hot gas defrost cycle not only to quickly defrost the coils but more importantly to boil off any liquid coming back from the evaps during defrost.

I wouldnt think those are thermobanks way up there due to the fact that you have to maintain water in them and also there needs to be a holdback valve near them.

I am still curious. If it is a hx then why way up on that walk in an enclosed rivited box. Can't wait to find out. Not sure how I am going to sleep now

[mr kev]

It's kramers version of a hx called the " thermolator ". I just found it. Here is the link. See page 6 I think.

http://www.kramerusa.net/misc/produc...OBANK_FULL.pdf

[Phase Loss]

whatever they are, I would find who put them there and kick them in the nuts.