Results 1 to 2 of 2
  1. #1
    Join Date
    Mar 2007
    Location
    Northern Ireland
    Age
    30
    Posts
    42
    Rep Power
    0

    TEWI Calculations



    Hi, I've done a bit of searching around google for information on TEWI calcs. I've found the formula and started working my way through it but am stuck on the indirect bit.

    Formula asks for 'energy consumption / year x indirect emission factors x lifespan'

    If I had a pack with 5 compressors, what rule f thumb would I use for the energy consumption? How about cabinets, coolers condenser fans? I have no idea what'indirect emission factors' are or where to find info on them.

    Can anyone help?



  2. #2
    Join Date
    May 2012
    Location
    England
    Age
    53
    Posts
    1,220
    Rep Power
    28

    Re: TEWI Calculations

    Quote Originally Posted by CJG21 View Post
    Hi, I've done a bit of searching around google for information on TEWI calcs. I've found the formula and started working my way through it but am stuck on the indirect bit.

    Formula asks for 'energy consumption / year x indirect emission factors x lifespan'

    If I had a pack with 5 compressors, what rule f thumb would I use for the energy consumption? How about cabinets, coolers condenser fans? I have no idea what'indirect emission factors' are or where to find info on them.

    Can anyone help?
    This slide show explains how they work.

    http://www.ecy.wa.gov/programs/air/p...lectricity.pdf

    Its American but the maths is still good.

    Rob

    .

Posting Permissions

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