In　order　to　enhance　the　comprehensive　heat　transfer　performance　of　the　spiral-winding　tube　heat　exchanger,　this　paper　presents　a　kind　of　vertically　inserting　space　bars　which　is　installed　on　the　inner　wall　of　the　core　tube　of　the　spiral-winding　tube　heat　exchanger　along　the　radial　direction.　By　means　of　numerical　simulation,　the　flow　and　heat　transfer　performance　of　the　spiral-winding　tube　heat　exchanger　with　vertically　inserting　space　bars　were　studied.　Compared　with　traditional　structure,　it　can　also　be　used　as　a　vortex　generator　while　fixing　the　relative　position　of　the　tube　bundle,　affecting　the　wake　field　formed　by　the　tube　bundle,　generating　continuous　turbulence　on　the　boundary　layer　of　the　tube　bundle,　and　enhancing　the　comprehensive　heat　transfer　performance　of　the　spiral-winding　tube　heat　exchanger.　Under　the　same　imported　conditions,　the　Nusselt　number　on　the　shell　side　of　the　spiral-winding　tube　heat　exchanger　with　vertically　inserting　space　bars　was　increased　by　13.01%　to　15.55%　compared　with　the　traditional　structure,　and　the　pressure　drop　is　increased　by　1.3%　to　4.3%.　And　the　comprehensive　heat　transfer　performance　can　be　increased　by　7.4%　to　10.5%.　On　this　basis,　the　influence　of　different　arrangements　of　the　vertically　inserting　space　bars　on　the　flow　and　heat　transfer　performance　was　studied.　The　results　showed　that　the　comprehensive　heat　transfer　performance　of　aligned　arrangement　was　the　best　under　the　operating　conditions　of　Reynolds　number　of　5000　to　24000,　and　the　comprehensive　heat　transfer　performance　of　staggered　arrangement　was　the　best　under　the　operating　conditions　of　Reynolds　number　of　24000　to　30000.　©　2021,　Chemical　Industry　Press　Co.,　Ltd.　All　right　reserved.