Questions about the new boiler
Thread Content
There is a new boiler that provides heating power for several workshops; its rated steam output is 9 tons, with a pressure of 15 bar. Some issues have arisen: when the steam demand is high, the pressure does not reach 15 bar, staying around 8-9 bar； When the steam load is relatively low, the pressure can return to 15 bar. As a result, corporate production is severely affected. A conflict arose between the supplier and the owner. The boiler supplier stated that a rated output of 9 tons generally results in only about 7 tons of steam (as the boiler is not equipped with instruments to measure steam output). From the perspective of corporate production, how should one negotiate with suppliers? Is it necessary to replace the boiler (the old boiler has a capacity of 15 tons and operates at 15 bar)? Thank you. . . :handshake
What kind of furnace is this? I’ve never seen one with a capacity of 9 t/h; I’ve only heard of models with capacities of 10 t/h or 6 t/h
“The boiler supplier said that a rated output of 9 tons generally results in only about 7 tons of steam. I think there is something wrong with what the supplier is saying. Since the rated output is 9 tons. This indicates that the equipment is capable of producing 9 tons of steam with satisfactory quality. Typical boilers also have a certain margin. Generally, it does not exceed 10%. Of course, long-term overloading is not allowed. I think it’s still a device issue. Personal opinion!
When the load is high, calculate the steam consumption of each workshop; if the total amount exceeds 9 t/h, then the steam consumption is too high and the boiler chosen is too small. It’s not a problem with the boiler manufacturer. However, if the steam output is less than 9 t/h, it means the boiler has not reached its rated steam production capacity, and in that case the equipment supplier should be held accountable. Check it yourself to see whether the gas production, fuel consumption, and air volume meet the requirements under high load conditions; in particular, check whether the fuel valve is fully open, or it’s possible that the boiler isn’t set to its maximum load.
What the poster means is that it could meet the design requirements at first, but now it can no longer do so. If that’s the case, it is recommended to check the heated surfaces for issues such as dust accumulation or leaks. If those problems aren’t present, then it’s a design issue – in that case, it’s necessary to make adjustments; replacing everything anew would be too wasteful
A rated output of 9 tons generally enables the generation of around 9 tons of steam; even if there is a deviation, it won’t be significant
Thank you all for your answers. It turns out that the 15-ton model was scrapped and replaced with a 9-ton one. Now there’s a problem; it will cost around 2 million RMB. The managers’ faces turned green; they didn’t know what the outcome of the negotiations would be. The 9-ton unit doesn’t have a flow meter, so it’s not possible to determine the exact amount of steam generated. It is possible to calculate the steam consumption, but not with high accuracy. Because the equipment is old, there is a lot of leakage. Reality is so cruel; one truly needs a talented person!
Two aspects: the gas consumption is ** 9 tons, and the furnace chosen is small； Another possibility is that if the gas consumption is 9 tons, then it’s likely that the furnace itself does not have sufficient power. Personal opinion, for reference only!
A boiler designed to produce 9 tons of steam is only able to generate 6 tons; unless human error is to blame, this is the responsibility of the boiler manufacturer, as the output does not meet the design specifications. You can have the manufacturer handle it.
Only with information, data, and parameters can it be determined. Agree with what was said on the fourth floor.