Central heating boiler - bricking of the grate with a part of the grate.

Question

Hello. I am dealing with a certain central heating boiler and I have a problem with it - it is massively oversized. I decided to reduce his walling up part of the grate with chamotte. And my question is: do I have to brick up half of the grid to reduce the boiler's achievable power? Is this...

Magister_123 · Accepted Answer

Is the dependence is linear, I do not know, but I modernized my boiler. From my experience, instead of using a chamotte mortar, use ash to transfer the bricks. This method is to each other that you can add and subtract bricks at any time. After the season, when you sense the cauldron then you can be tempted to glue the whole.
What kind of boiler do you have? Śmieciuch?

Magister_123 · Accepted Answer

If you're having so much fun, add the secondary air steering wheel. As is the place, it is still the draft regulator.

jack63 · Accepted Answer

After this modification, the exhaust temperature will drop. You need to take care of the chimney. It is about patency, cross-section and possibly insulation, because there may be problems with the string.

Sstalone · Accepted Answer

I have been lecturing the boiler for the last time, so I can say that the power not only depends on the cross section of the air supply ducts, but also on the exhaust gases. The best way was suggested by a colleague Magister_123, I myself did everything undressed ... it all depends on the design of the boiler. However, as for the chimney, even if we reduce the boiler's power and the temperature of the fumes will be lower, but the fumes will be better burned, the question is whether it will not be better for him.

andrzej lukaszewicz · Accepted Answer

This is about the physical reduction of the hearth, not the accumulation of the fireclay.

andrzej lukaszewicz · Accepted Answer

The use of fireclay in the burning place (burner) isolates the flame from the cold water jacket, which causes an increase in the combustion temperature and, therefore, a better burn-up. The topic is more to lower combustion boilers due to their construction than to the upper one (most common constructions of craftsmen and large producers too).

Xantix · Answer

This is not my boiler. I would choose it according to the demand, but unfortunately the owner of the boiler did not let me convince, he only entrusted the installer with specialists who pressed him for a large boiler 2x. And now this hot potato was thrown at me. It's a normal upper combustion boiler, a local manufacturer.

Xantix · Answer

And it will be beneficial in this case. In this case, I think there is no need. This boiler has a tragically small convection exchanger and now the temperature of the exhaust fumes can be approached 350 degrees with such burning. Simply a tool for heating the atmosphere. I think that the temperature of the exhaust should not fall below 200 degrees after this transformation. Both are already there. Unfortunately, unfortunately only a decent boiler in the boiler is missing.

jack63 · Answer

And that's sorry. I thought it was some decent boiler, and it looks like crap. Unfortunately, my opinion about Polish boilers is confirmed. I wonder what is the comedian and how does his interior look after such a ride ???

Xantix · Answer

No crap in the production of a local producer Made in garage, where it can be made of 100 cauldrons a year, so there is nothing to expect high quality since a welder does not make a boiler. Is not so bad. A lot of models of Polish boilers are very good quality products. The problem is mainly the products of garage manufacturers, which are patched with metal boxes without any professional knowledge. I drive alone on the MPM DS boiler and it is a very successful construction. Chimney with clinker. The interior is covered with a few millimeter of powdery creamy brown soot. There is usually no need to clean - everything evals ...

andrzej lukaszewicz · Answer

Or maybe the opposite. On the oversized, the temp lowers and the boiler suffocates at 45 degrees. After reducing the furnace (and power) you will be able to smoke at 65 degrees and the exhaust will be hot.

Sstalone · Answer

Yes, but on condition that the power consumption with CO will be reduced by lowering the temperature of the water behind the boiler. I have a question, is it more beneficial to lay out the furnace of a solid fuel boiler with thin or thick chamotte elements? Thin heat up quickly, thicker longer keep the temperature that burns up better?

Sstalone · Answer

The problem to be solved is to reduce the boiler's power, the proposed solution is to wall the grid parts, but when changing the boiler structure, do not forget about better combustion of fumes with reduced boiler power (the flue gas temperature naturally decreases). The question was whether to use thinner or thicker chamotte pieces in the construction to burn out the exhaust? A separate issue is the way they are built.

stanislaw1954 · Answer

And how do chamotte tiles (thicker or thinner) burn off? is it the equivalent of a turbo in a diesel engine? This is only about reducing the combustion chamber in the boiler, i.e. less coal can be disposed once. And by filling partially, for a large chamotte combustion chamber, we also extend the thermal inertia of the boiler, because after burning the coal, the boiler will keep warm for a little longer.

Central heating boiler - bricking of the grate with a part of the grate.

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