Frost　formation　on　heat　exchangers　is　an　undesirable　phenomenon　that　almost　inevitably　exists　in　refrigeration　and　cryogenic　equipment;　it　can　significantly　affect　the　thermal　efficiency　of　heat　exchangers　and　reduce　the　performance　of　the　refrigeration　system.　In　this　paper,　a　newly　developed　anti-frosting　paint　was　used　to　spray　on　the　heat　exchanger　fins　with　coating　thickness　of　30　pm,　and　a　series　of　comparative　experiments　were　conducted　to　test　its　effectiveness　in　restraining　frost　deposition　under　different　repeated　frosting-defrosting　cycles.　The　experimental　results　demonstrated　that　the　anti-frosting　time　of　the　coated　heat　exchanger　was　substantially　longer　when　compared　with　the　uncoated　heat　exchanger.　In　addition,　there　was　no　appreciable　frost　deposition　on　the　coated　fins　surface　during　the　whole　test.　(C)　2009　Elsevier　Inc.　All　rights　reserved.