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  • Users: spereira
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  1. spereira

    pressure reducing devices

    Hi, I have a question regarding liquid line pressure reducing devices: we have 3 condensate pumps running, discharging at 8.5 bar for two paralel circuits, one at 8 bar (lowest flowrate) and the other at 1.5 bar (highest flowrate). In order to optmize energy consumtion we're planning on changing...
  2. spereira

    sequential turbo setup

    Hi guys, I have a question regarding turbo setups: Suppose I'd need 3bar for a 1.5lt diesel engine at 5300rpm. This gives me around 28lb/m. I've checked compressor maps of the GT series and none is able to give 3bar discharge pressure for such a low mass flowrate...either regarding...
  3. spereira

    steam piping arrangement

    hi, fot the revamping of one of our plants we need to increase low pressure steam (1.5 bar) pipe size in order to allow for increased steam production. Actual pipe size is 16" and I've calculated a new pipe size of 20". The question is: I might not have the space on the existing pipe...
  4. spereira

    intercooling and engine temperature

    hi by installing an intercooler (diesel engine) the intake will be colder. This is obvious. Now, people tell me that because of this, the engine will run colder, also. But, the question is by installing the IC more fuel will be burnt, thus increasing combustion temperature since more heat will...
  5. spereira

    hi can anyone tell me if there a

    hi can anyone tell me if there are any rules of thumb for designing storage tanks, I mean regarding height/diameter ratio? I have to design a 3000 m3 vessel but due to spacial reasons it can't have more than a 17m diameter. this gives me approximately an 11m vessel height. The problem is that I...
  6. spereira

    rakes/scrapers

    Hi everyone, we're using a small thickener (2m diameter) for a crystallizer mother liquor clarification before recycling it back to the process. Although the area seems to be adequate for the solids charge we're having problems with the underflow since crystals get stuck to the conical walls and...
  7. spereira

    improving intercooler efficiency

    Hi everybody, Rally cars spray water into the IC surface to increase heat transfer thus further reducing IC outlet temperature. This is true due to the huge latent heat of vaporization envolved. The problem is that once the water bottle is finished, no more spay! an HVAC system uses the same...

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