STEEL INDUSTRY
STEEL INDUSTRY
(OP)
Hello There!
In an undustrial environment,when you have a lots of heat, which are the best and the more efficient ways/modes for getting out quite enormous quantities of heat ?
Welch
In an undustrial environment,when you have a lots of heat, which are the best and the more efficient ways/modes for getting out quite enormous quantities of heat ?
Welch





RE: STEEL INDUSTRY
If you had the money, one could make an entire building a vent with fans in the appropriate places. But I think it cheaper to erect posts and one flat roof on an angle, no walls.
I am just guessing now. Do you have more details?
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RE: STEEL INDUSTRY
corus
RE: STEEL INDUSTRY
RE: STEEL INDUSTRY
Can you imagine how much heat is radiating (surface temperature at 900 ºC (1652 ºF) from a 16 yards bilets cooling table, file simutaneous lanes: 16 x 30 x 5 kW = 2400 kW That's the heat power I need to get out of the warehouse.
welch
RE: STEEL INDUSTRY
The "most efficient" way is to do nothing at all. Since this requires no work input the efficiency is 100%.
The "best" way is probably to spray water on it.
Now, if you want some other options, how about some more info:
How often are you putting your 2400 kW heat load into the warehouse?
How often do you take whatever it is out of the warehouse, and what is the temperature of the whatever when it leaves? Or, what temperature would you like it to be?
What is the maximum allowable temperature in the warehouse?
What is the temperature of the available ambient air (to see if simple ventilation is a viable option)?
What is the maximum permissible cooling rate of the product?
Do you have a use for the heat?
RE: STEEL INDUSTRY
RE: STEEL INDUSTRY
Q1: All the time. That's an industry 24/24h with some breaks (during electricity high rates periods).
To the rest of all other questions:
That's a process requirement: I have to cool the steel bilets down to 500 ºC at a certain rate in order the material of those bars (steel) regain the magnetic properties again.
The present situation is that it takes to long. So I have to increase the cooling slope at the level of the cooling-table.
The warehouse does not have already two walls, completely free-open those two sides.
My recommendation is to consider as well a big a longitudinal opening vent at the level of ceiling.
We are looking at the ceiling structure to evaluate that possibility. But this is what we call passive measures. And about active measures? That's my question!
We thinking about strong ventilation below table combined with a 90ºsmall water-jets distribution.
At this stage, we begin to face materials properties problems, because of radiation levels we are facing and the consequent surface temperatures.
Can be 28 to 32 ºC, at the maximum load.
Cooling rate: suppose 5 + 5 bilets each 1500 kg the first 5 at 750 ~ 900 ºC and the second 5 at 600 ~ 750 ºC.
I have to confirm the amount of time to impose at this cooling phase in order to define the nominal cooling rate. I 'm waiting this data from the process engineer.
Concerning the extra-heat issue: I mentioned already to manager a possibility to design a production hot-water central to supply the village nearby, that involves some administration serious issues. Some of this kind of projects are already implemented in the scandinavian countries. In studying. Otherwise, no chances.
To BigInch
That's ok! In principle I agree with you.
Thanks to both.
welch
RE: STEEL INDUSTRY
In this case I would wish you as a neighbour. You didn't need at all the combined cycle power turbine! ....
Kind regards,
Welch
RE: STEEL INDUSTRY