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  1. Mac001

    HELP ON AMMONIUM SULFATE SOLUTION

    Does anyone know where to find or how to calculate the properties of a solution water + 30% (in vol)ammonium sulfate ? ( or similar). I need viscosity, conductivity , density , heat capacity and enthalpy . I've asked to my customer, but it's a huge company and it's difficult to get an answer (...
  2. Mac001

    HEELP !! safety Tubes ( double wall)

    Hi there !! How can I calculate with HTRI an exchanger with double wall tubes. It's practically a safety exchanger with a OD 19.05mm ( ID 14.5 mm) 19 FPI copper tube on the outside and 1 OD 14mm tube on the inside (ID ~12 mm)? Hoe can I simulate such a tube ? (Let's say that: in the...
  3. Mac001

    AISI 316L AISI 316 Ti selection help

    What's the difference betwheen 316L and 316Ti in tubes 18mmx 1mm in contact with CH4 smoke ? at 450°C and with condensate (PH 2-3) at 120°C thank you in advance !!
  4. Mac001

    difference AISI 316 L and 316 Ti with smoke

    I'm working at a heat recovery exchanger connected in line with an CH4 engine . the fisrt exchanger will have inlet temp 440° and outlet temp 120°C The inlet temperature will be 120°C and outlet 50°C. I'm selecting the tubes material and i'm considering AISI316L but a some source insist for...
  5. Mac001

    HELP SEALS BIOGAS

    Hi !! I'm working at an BIOGAS receiver. The BIOGAS came from WASTE and does not have any zootechnical origin) I have looked at the "general" BIOGAS specs and I have found these components: 1) H2S Hydrogen SOLFIDE 2) Ammonia 3) CH4 Methane (of course) 4) Carbonic acid (also called areal acid)...
  6. Mac001

    SEAWATER - AMMONIA Exchanger tubes selection

    Can anyone help me? the exchanger is SEawater tube side and ammonia shell-side I discarded CU/ni and AISI 316 ... Someone suggested titanium, i think it should be ok , but i'm looking for something less expensive. What do you think OF AISI 446/447 and duplex 2507 ? what are they cheaper (...

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