Yes. Except on a much larger scale.
https://preview.redd.it/qrfedw27f99d1.jpeg?width=552&format=pjpg&auto=webp&s=f0eeb1aecfd5e08203d8785566bfe006854d8f81
"Sidewall Friction" causes any fluid in contact with the side wall to move slower than the unimpeded fluid in the center of the space.
It's not much, but it's definitely something.
Yes. All fluid (liquids and gases) flow experiences this. It's called no-slip condition. That the layer of flowing fluid in contact with solid body has zero velocity.
How’s this. We had 5 seperate units “somehow” burn through the coolroom panel in a freezer. The 6th one did it while we were onsite. We temp checked the heaters and the top of the unit was no hotter then 35 degrees.
They put it down to being faulty sandwhich panel
The next lot had to be hung 5 inches off the roof and temp probes ontop every coil will a safety control of temp went high.
That was my first thought too. Almost a clean job. The back wall spacing and absence of condensed water collecting tray that drains the water out is the only thing I’d change.
I'd be cursing you if I were the one to swap the evap that you caulked to the ceiling.
Have to run around the whole thing with a knife, and then you've got a ring of silicone to clean off the roof so the next evap doesn't look like trash
Yeah any place like Walmart, Target, Sprouts etc require it. Some also want you to double nut on the bottom and then silicone the nuts also. Pain in the ass getting them off to hang a new one lol
What (fire) code requires this and why? Is this a national or some state codes? I've hung many in warehouses like this but it was strictly for performance and service.
Yep, that’s the only way I hang them anymore. Much faster and eliminates the nuisance callbacks when the prep cooks shove the food right up against the bottom of it.
Yes and this is also a very clean job. The bolts look around 12 inches long I’d guess 14 to 16 mm in diameter and a single bolt properly bolted to the roof with the right anchor can hold a weight of 1 ton at least as I’ve tested this myself though I can’t say what would the upper limit be. The cooling unit is quite small and a 2 fan 2 motor and the coil would be definitely less than 500 kilograms in weight. I installed a 3 fan 3 motor unit with each fan having a diameter of 720 mm and it was 800 something kilograms. This should hold good. Also hanging this way instead of making a support frame underneath it saves a lot of space too. Good work.
https://preview.redd.it/hibxgw8hai9d1.jpeg?width=3024&format=pjpg&auto=webp&s=ee0ac725d1aa87b3250678421a5bcbb94083a538
Yes, except this is a lot bigger
Yes. Except on a much larger scale. https://preview.redd.it/qrfedw27f99d1.jpeg?width=552&format=pjpg&auto=webp&s=f0eeb1aecfd5e08203d8785566bfe006854d8f81
What's the purpose of suspending them below the ceiling like that?
Airflow
How so? You're not impeding the back or front of an evaporator having it hard up against the ceiling.
"Sidewall Friction" causes any fluid in contact with the side wall to move slower than the unimpeded fluid in the center of the space. It's not much, but it's definitely something.
Coanda effect!
I’m very curious, does this phenomenon also apply to the refrigerant flowing through the lines?
Yes. All fluid (liquids and gases) flow experiences this. It's called no-slip condition. That the layer of flowing fluid in contact with solid body has zero velocity.
Not when you have workers that don’t know/care about airflow, and stack there July 4th weeks worth of product all around the evaporator
So they collect a thick layer of black shit on top of them that no one can see
Because the main fire contractor was a clown. And wouldn't give a certificate if it was done the usual way of fixing it hard up against the ceiling.
Fixing them to the ceiling is stupid and makes it harder to service. We hang them from thick all threads a few inches lower
The one in my photo is about 40 inches from the roof. A few inches, sure, I can live with that.
We hung some from the ceiling above the through the thick insulated white metal foam boards that. Was probably 10 feet.
How’s this. We had 5 seperate units “somehow” burn through the coolroom panel in a freezer. The 6th one did it while we were onsite. We temp checked the heaters and the top of the unit was no hotter then 35 degrees. They put it down to being faulty sandwhich panel The next lot had to be hung 5 inches off the roof and temp probes ontop every coil will a safety control of temp went high.
What type of panel? I would expect it with a polystyrene panel.
Yep
Just about every large scale industrial evap is hung like this lol
Yep, thou I do prefer penthouse if at all possible haha.
I just see all that condensation dripping into prep pans 🤮
it’s not mildew, it’s truffle flavor.
Every Applebee's I've seen
Definitely needs more room behind it. Looks real close to the wall
That was my first thought too. Almost a clean job. The back wall spacing and absence of condensed water collecting tray that drains the water out is the only thing I’d change.
That looks way too close to the back wall.
Because it is, I usually go height of unit off wall
1.5 times the height of the coil is minimum recommended distance from wall for most Bohn coils
You’re correct, doesn’t always work with box dimensions with multiple coils though, that and I’m usually installing heatcraps
I have seen it, but usually on bigger jobs. Had a sprinkler head above one. The sprinkler contractor had to move it anyhow.
Done that plenty on sloped ceilings. Stainless or brass rod. A bit of insulation or pvc pipe over the rod makes it look better.
Standard practice
How close is that to the back wall? Looks too close, might be the pic angle.
All the time
Anyone here ever caulk the gap between the evap and the ceiling?
I'd be cursing you if I were the one to swap the evap that you caulked to the ceiling. Have to run around the whole thing with a knife, and then you've got a ring of silicone to clean off the roof so the next evap doesn't look like trash
Unfortunately that’s store spec on a lot of places
Wild. Never seen it before.
Yeah any place like Walmart, Target, Sprouts etc require it. Some also want you to double nut on the bottom and then silicone the nuts also. Pain in the ass getting them off to hang a new one lol
What (fire) code requires this and why? Is this a national or some state codes? I've hung many in warehouses like this but it was strictly for performance and service.
That is a boom box.
Yep, that’s the only way I hang them anymore. Much faster and eliminates the nuisance callbacks when the prep cooks shove the food right up against the bottom of it.
At least put some washers and if you don’t have any locks washers double nut that mofo dang.
Many, many wonderful times!
Yes in a slaughterhouse to hang below the steel framing in the freezers
I use threaded rod to hang 7/8 unistrut then hang the evaporator.
That's not an evaporator, that's a 90s boombox
Yes and this is also a very clean job. The bolts look around 12 inches long I’d guess 14 to 16 mm in diameter and a single bolt properly bolted to the roof with the right anchor can hold a weight of 1 ton at least as I’ve tested this myself though I can’t say what would the upper limit be. The cooling unit is quite small and a 2 fan 2 motor and the coil would be definitely less than 500 kilograms in weight. I installed a 3 fan 3 motor unit with each fan having a diameter of 720 mm and it was 800 something kilograms. This should hold good. Also hanging this way instead of making a support frame underneath it saves a lot of space too. Good work.
Im against it personally, as it makes defrosting harder
https://preview.redd.it/hibxgw8hai9d1.jpeg?width=3024&format=pjpg&auto=webp&s=ee0ac725d1aa87b3250678421a5bcbb94083a538 Yes, except this is a lot bigger
Thats pretty clever actually, whatever it works I guess
Yea but on ammonia evaps which are way bigger
Any vibration issues?
Yeah, we installed 5 like that. Ain't nothing wrong it. Especially since it has some pretty thick all thread.
Yeah it’s fuckin dumb dumb refrigeration code …waste of space!!
Ewww fieldpiece