I have an old CTC heat exchanger in the form of a large barrel about 1.5 meters high, installed in 1966. This summer, I will be replacing a single-pipe heating system with a two-pipe system with new radiators.
Since I work with old steamships, I know that the bottom is usually blown on the steam boiler to remove debris that collects at the bottom of the steam boiler and causes corrosion.
On my CTC exchanger, I have four large outlets at the bottom of the heat exchanger. I'm considering if I can extend the life of my heat exchanger by loosening one of these plugs and flushing out the sediment at the bottom of the heat exchanger. The most common fault with these heat exchangers seems to be that it gets a hole in the bottom and the water leaks out. I'm also considering if it's possible to repair these heat exchangers. I like that there's plenty of hot water in the system if there's an interruption in the district heating. The downside is that these heat exchangers have much lower efficiency in the summer. I estimate it uses about 400 Watts of hot water?
When I installed towel heaters in the bathroom, I noticed that the water in the system is completely black and therefore must be the same water from 1966. When I refill with new water, how should I remove the oxygen from the water? Can I boil the water? I recall that in steam locomotives, they mix in bicarbonate to prevent corrosion on the steam boiler. Ideally, if it were possible to use some light-flowing oil that circulated in the radiators.
Since I work with old steamships, I know that the bottom is usually blown on the steam boiler to remove debris that collects at the bottom of the steam boiler and causes corrosion.
On my CTC exchanger, I have four large outlets at the bottom of the heat exchanger. I'm considering if I can extend the life of my heat exchanger by loosening one of these plugs and flushing out the sediment at the bottom of the heat exchanger. The most common fault with these heat exchangers seems to be that it gets a hole in the bottom and the water leaks out. I'm also considering if it's possible to repair these heat exchangers. I like that there's plenty of hot water in the system if there's an interruption in the district heating. The downside is that these heat exchangers have much lower efficiency in the summer. I estimate it uses about 400 Watts of hot water?
When I installed towel heaters in the bathroom, I noticed that the water in the system is completely black and therefore must be the same water from 1966. When I refill with new water, how should I remove the oxygen from the water? Can I boil the water? I recall that in steam locomotives, they mix in bicarbonate to prevent corrosion on the steam boiler. Ideally, if it were possible to use some light-flowing oil that circulated in the radiators.
Do you use the old stuff like a reserve cartridge?
Bicarbonate is converted with increasing temperature and pressure into carbonate and carbonic acid, which causes deposits. There is old technology based on the ion exchange cycle to remove salts and other substances from the water. That's about what I remember from school.
The water always turns black after a while. Completely normal. The oxygen disappears on its own when consumed in the rusting process. When the oxygen is gone, it stops rusting. You can speed up the deoxygenation by getting the boiler to almost boil. But if it's just a little water you've added, it doesn't matter at all.N nallepu said:
The idea that they put bicarbonate in the steam locomotives seems unlikely since the water consumption was enormous. Additionally, bicarbonate cannot be beneficial in cylinders and valves.
I find it very hard to believe there is a corrosive sludge in your heat exchanger.
Staffan