Results 1 to 6 of 6
  1. #1
    seyyah's Avatar
    seyyah Guest

    commissioning of the co2 cascade systems...



    Hi;

    I am a student in Univercity for MS degree and I am working on CO2, I designed a cascade system with CO2 and R-404A for the test.

    Do you suggest any thing to me before charge the CO2 to the system for security during the filling? Or is there any installation manual for commisioning and charrge the CO2 to sytem?

    Thank in advance for your replies.

    Regards;

    Ayse Karaoz



  2. #2
    Join Date
    Oct 2005
    Location
    Canada
    Posts
    35
    Rep Power
    0

    Re: commissioning of the co2 cascade systems...

    * first make sure you have a vacuum pump to 62 microns on the CO2 system
    * since it is a cascade system you are in the sub-critical CO2 applications, your design working pressure I am assuming to be 400 psi, you should have an ASME relief valve to protect the CO2 system.
    * inspect the relief valve and its location to reduce the possibility of liquid passing through the triple point and solidifying in the relief valve outlet [review B52 code for proper installation]
    * you must charge the CO2 [R744] system in the vapour phase until the pressure has reached 70 psig [ 4.8 bars] min.

    Regards
    Camille Zabbal
    Last edited by Camille; 02-12-2008 at 10:28 PM.

  3. #3
    seyyah's Avatar
    seyyah Guest

    Re: commissioning of the co2 cascade systems...

    Hi Camille;

    Thank you very much for your kind reply. If I send my cascade design to you; can you check it basicly?

    Best Regards;

  4. #4
    Join Date
    Oct 2005
    Location
    Canada
    Posts
    35
    Rep Power
    0

    Re: commissioning of the co2 cascade systems...

    please do send a schematic

  5. #5
    seyyah's Avatar
    seyyah Guest

    Re: commissioning of the co2 cascade systems...

    Hi Camille;

    Sorry for my late reply because of some problems I couln't turn you. Please find my design from the below link.
    rapidshare /files/179783710/CO2_TESISAT_SEMASI_060808_1_.pdf

    On the schematic;

    1-condanser
    2-compresor
    3-accumulator
    4-plate heat exchanger
    5-expansion valve
    6-selonoid valve
    7-sight glas
    8-drier
    9-liquid tank
    10-oil separator
    22-safety valve

    Thanks in advance for your reply.

  6. #6
    seyyah's Avatar
    seyyah Guest

    Re: commissioning of the co2 cascade systems...

    Dear Camilli;

    I am not allowed to send a link to you from this web page.

    Please add;

    h.t.p.\.r.p.d.h.r...com before the files/179.... and please add ..............html after pdf.

    If you can send your e-mail adress; I can send thre also.

    Thank you very much.

Similar Threads

  1. Help on cascade systems
    By marc5180 in forum Training
    Replies: 17
    Last Post: 01-10-2009, 04:31 PM
  2. cascade systems
    By GHAZ in forum Commercial
    Replies: 1
    Last Post: 12-04-2007, 10:42 PM
  3. cascade systems -80
    By cameron.e in forum Commercial
    Replies: 1
    Last Post: 11-04-2007, 09:18 PM
  4. Refrigerant for multi-stage and cascade systems
    By lraja in forum Refrigerants
    Replies: 0
    Last Post: 15-01-2007, 02:27 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •