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  • Users: milena02
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  1. milena02

    stoping aluminiun ageing

    How is call a heat (cool) treatment for alumniniun, when after heated and quenched in water, it shall be put in a refrigeration chamber at a very low temp , at least -29ºC , to stop the Al. ageing. Material thicknes is about 0.125"
  2. milena02

    Keepin annealed alumniunm

    I know that in the aeronautical industrie , aluminiun piece are annealed , and to keep it in such state , it shall be kept at low temperature , about -40ºC or ºF for no more than 3 days. I want know which standard cover it , no mater if it is ASTM , or from Europe or from any place. Thanks...
  3. milena02

    adhesive for PET , or MYLAR, Polyethylene terephthalate

    There is any adhesive to join this material, himself, PET+PET.? There is any producer of PET in solid round BARS or TUBES? Thanks in advance
  4. milena02

    Chemical reaction water ammonia

    If I vent ammonia at it´s gaseous state inside a water tank , what reactions, or elements becomes from it.?? I´m a Refrigeration mechanic , and since the start of the amonnia refrigetarion is working , every body do it with no problem. But now I need to tell my customer what will be happen...
  5. milena02

    Best Vacuum achieved by piston pump

    Normally using a piston air compresor,run by a electric motor a vacuum about 3" or 4" Hg absolute value can be reached. A refrigeration compresor reach the same , using air, not at a refrigeration cicle, of course it is not the best to use What could be the minumun vacuum or absolute pressure...
  6. milena02

    Hand operated vacuum pump

    At the attachment is a image of a hand operated vacuum pump named "Komovskiy vacuum pump" , do any member ever see or use this kind of pum? I want to know what is the max vacuum it can achieve. Thanks in advance
  7. milena02

    sulfuric acid-water azeotropic

    What is the least decompose temperature for a azeotropic sulfuric acid-water mixture.? What is the sulfuric acid-water ratio that have the least decompose temp?
  8. milena02

    Flow as the fluid water rise from a pipe end

    Once I see a graphic and related formula to know flow by the heigth the fluid rising from a open pipe standing vertical its main axis . Any had seen it? Please route mo to it. Thanks in advance
  9. milena02

    water running over a border

    Maybe a wrong forum to post it. If so please redirect me. A swimming pool will have all around it a leveled border. Width 4.4 meter , length 13 meter The pump can deliver 35 m3/hour. The water will overflow all around the border. Now the one million dollar question. HOW MUCH WILL THE WATER...
  10. milena02

    azeotropic boiling point

    Where I can find a table or formula to get the boiling point of the H2SO4 (sulphuric acid) + H2O (water) azeotropic mixture. Mainly for the mixture used in lead-acid battery. 33.5% v/v
  11. milena02

    Sizing a air accumulator

    I am trying to size an air receiver tank for the pneumatic operation of 16 valves. There are: ten 12" valves that require 0.58 gallons for a full stroke (at atmospheric pressure) 6 24" valves that require 2.29 gallons for a full stroke (at atmospheric pressure) The operating pressure of the...
  12. milena02

    Pumping water +sand from river

    What is the best method to pump Sand + water to extract sand from a river.?
  13. milena02

    H2SO4 especific and latent heat

    Please can give me such 2 values for H2SO4 100% especific heat latent , or boiling heat . Imperial or SI units , or whatever

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