fouled evap water side

[Tommy knocker]

Falling film also.
X2 for the linked algae treatment.

Have not laughed like this in days.

Just an idea but you could sell them another pump and a plate heat-exchanger.
Isolate the chiller to prevent further damage after cleaning.

The plate and frame is a good suggestion.

[steveoo]

missed that it was dx.

[climate master]

Maybe you could go purchase some of these and throw them in there. I understand they are really aggressive on algae.

I think the 5ft Sturgen might swallow these 5in puppies whole.

Sure a secondary heat exchanger/pump set up would be the way to go. But seems a little more economical to flush when the delta T drops since that is not in their budget.

Back to the original question what would be the recommended mixture to flush this titanium tube bundle with?

[KnewYork]

Back to the original question what would be the recommended mixture to flush this titanium tube bundle with?

Herein is the crux of the problem, you are asking us to come up with some solution of some unknown chemical when we do not know exactly what the fouling material is. You described as "fouled with algae/ slime/ snot whatever you care to call it". Of the three what is it most like?

Do you have water treatment people in your area? Why not call them in, have them take a sample and tell you what it is and how to treat it. or have the owners call in the water treatment people and let them deal with it.

If that is out of the question take a sample yourself and try using different products on it to see what will kill/clean it. Maybe a water treatment company could recommend an algaecide that would work.

[climate master]

Herein is the crux of the problem, you are asking us to come up with some solution of some unknown chemical when we do not know exactly what the fouling material is. You described as "fouled with algae/ slime/ snot whatever you care to call it". Of the three what is it most like?

Do you have water treatment people in your area? Why not call them in, have them take a sample and tell you what it is and how to treat it. or have the owners call in the water treatment people and let them deal with it.

If that is out of the question take a sample yourself and try using different products on it to see what will kill/clean it. Maybe a water treatment company could recommend an algaecide that would work.

Thanks for all the help. At least now you have the answer to give the next idiot wasting his time on this forum.

[Sicofthis]

Dibbs on being the next idiot!

[KnewYork]

At least now you have the answer to give the next idiot wasting his time on this forum.

Couldn't have said it better myself...plenty of misguided people pass through these parts asking questions without facts or accurate descriptions of the problem. They either learn to state the problem with clarity or move along. I suspect you may be in the latter group.

You might want to use something stronger than household bleach, but that's up to you.

[Screwit]

Climatemaster, you are the one on site so familiar with the installation. On the forum the members are only interpreting the information as much or as little as you post it. Reading through and the fact that you do not have an intermediate heat exchanger between the chiller barrel and the commercial fish hatchery with the 5ft sturge0n I would be thinking it best to engage a chemical treatment company for the clean otherwise you could find yourself in a whole pile of steaming liable if the product is damaged as a result of the flush. But hey you are the man on site so it is your call.

[Healey Nut]

Do they make automatic tube cleaners for chillers with water surrounding refrigerant tubes? Only ones I know of are the sponge balls that clean the inside of the tube.

Years ago Trane offered auto tube cleaning as an option . Each tube had a small basket attached to each end of the tube and there was a brush in each basket . There was a wrap around loop of piping and some automatic valves that would change position to reverse the flow through the bundle on a timed cycle, the change in flow would fire the brush through the tube . Never seen one in action and dont know how well it worked .
I think the idea got dropped due to expense and the fact that the chiller looked like a giant octopus with piping everywhere .

[Tommy knocker]

Years ago Trane offered auto tube cleaning as an option . Each tube had a small basket attached to each end of the tube and there was a brush in each basket . There was a wrap around loop of piping and some automatic valves that would change position to reverse the flow through the bundle on a timed cycle, the change in flow would fire the brush through the tube . Never seen one in action and dont know how well it worked .
I think the idea got dropped due to expense and the fact that the chiller looked like a giant octopus with piping everywhere .

I used to take care of 2 machines that had them. The piping wasn't bad at all but they were in a giant mechanical room. They worked very well. Brushes have to be replaced after some time as would be expected but it can be done quite a bit faster then brushing all the tubes. Never seen anything automatic for a barrel with water in shell. But I really like the auto brush trane had.

[jimp]

I have a customer with and open loop titanium evap. After eliminating other possible issues have detemined evap to be fouled with algae/ slime/ snot whatever you care to call it. Upon open inspection of evap water side found significant white slime insulating evap tube bundle. What is the recommended treatment/ratio for cleaing/flushing. Have rotting/punched tooooo many condenser tube to fathom but usually the evap water side is closed loop and the water treatment company handles it. Not the case for commercial fish hatchery. recomendations please

I use a product called "Citranox" for this exact problem. You will need to elevate the solution temperature for the best results.


Before and after pictures.

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