Results 1 to 4 of 4

Thread: Defrost scheme

  1. #1
    behmin's Avatar
    behmin Guest

    Smile Defrost scheme



    Can anybody tell me what is the best method (least cost and most reliable!!) to defrost a water-to-air source heat pump? Thae heat pump is packaged and not split.

    I know of one way to use a reversing valve; heat the frosted air coil (make it condenser) and then switch back to heating mode once the ice is melted.

    Is there any other way (not electrical defrost) ?



  2. #2
    Brian_UK's Avatar
    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
    Join Date
    Mar 2001
    Location
    Dorset
    Age
    76
    Posts
    11,192
    Rep Power
    60

    Re: Defrost scheme

    Err, no; not simpler.
    Brian - Newton Abbot, Devon, UK
    Retired March 2015

  3. #3
    Join Date
    Aug 2009
    Location
    New Zealand
    Age
    59
    Posts
    2,556
    Rep Power
    26

    Re: Defrost scheme

    Hot gas defrost, inject hot vapour after expansion device,

  4. #4
    Join Date
    Sep 2007
    Location
    Split Croatia
    Age
    57
    Posts
    6,175
    Blog Entries
    6
    Rep Power
    36

    Re: Defrost scheme

    Is that heat pump also used for cooling?

Similar Threads

  1. Replies: 12
    Last Post: 27-03-2011, 04:12 AM
  2. Toshiba RAV SM/SP1400 defrost problem
    By SteinarN in forum Heat Pumps
    Replies: 11
    Last Post: 20-02-2008, 05:25 PM
  3. No Power for Defrost Timer Motor
    By kln in forum Domestic
    Replies: 6
    Last Post: 21-01-2008, 09:22 AM
  4. TK basic micro-p features and functions
    By REEFER-TEK in forum Transport
    Replies: 0
    Last Post: 05-12-2007, 07:25 PM
  5. Hot gas defrost vs Electric defrost
    By herdian in forum Industrial
    Replies: 19
    Last Post: 13-08-2007, 11:25 PM

Posting Permissions

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