A　new　kind　of　plain　plate　fin　with　twelve　vortex　generators　of　delta　winglets　around　each　tube　in　fin-and　tube　heat　exchanger　proposed　by　the　present　authors　is　experimentally　studied　in　this　paper.　Experiments　of　four　heat　exchanger　surfaces　of　real　size　are　conducted　to　compare　the　comprehensive　characteristics　of　the　proposed　fin　with　a　circular　wavy　fin:　two　wavy　fin-and-tube　heat　exchangers　with　6　rows　of　tubes　at　the　fin　pitch　of　2.54　mm　and　2.117　mm　(10-wavy　and　12-wavy　for　short)　respectively;　and　two　proposed　fin-and-tube　heat　exchanger　surfaces　with　five　rows　of　tubes　at　the　same　fin　pitches　(10-LVG　and　12-LVG)　correspondingly.　The　inlet　velocity　of　the　air　side　varies　from　1.5　m/s　to　7.5　m/s,　and　the　water　side　flow　rate　is　fixed　at　a　certain　value　at　each　air　inlet　velocity.　Experimental　results　indicate　that　the　heat　transfer　rate　and　pressure　penalty　of　heat　exchanger　surfaces　using　proposed　fin　with　five　row　tubes　are　almost　the　same　with　the　six-row　tubes　wavy　heat　exchanger　surfaces.　Correlation　of　the　Nusselt　number　Nu　and　the　friction　factor　f　on　the　air　side　are　achieved.　Entransy　analysis　is　conducted　to　reveal　the　heat　enhancement　mechanism.　(C)　2018　Elsevier　Ltd.　All　rights　reserved.