In　present　paper,　a　novel　airfoil　printed　circuit　heat　exchanger　(PCHE)　with　dimples　was　proposed　as　heat　exchanger　for　supercritical　carbon　dioxide　(S-CO2)　Brayton　cycles　in　the　concentrated　solar　power　plant.　Firstly,　a　three-dimensional　flow　and　heat　transfer　numerical　model　was　developed　and　validated.　Then,　the　number　and　arrangement　of　dimples　were　optimized,　and　an　optimized　airfoil　PCHE　with　dimples　was　obtained　and　compared　with　airfoil　PCHE　without　dimples.　The　results　indicated　that　airfoil　PCHE　with　dimples　achieved　the　best　comprehensive　performance　when　a　unit　volume　had　two　dimples　which　were　in　staggered　arrangement　with　airfoil　fins.　In　the　range　of　Reynolds　number　studied,　the　comprehensive　performance　can　be　improved　by　3.58.7%　after　replacing　the　original　PCHE　by　the　novel.　The　above　results　indicate　that　the　proposed　PCHE　can　achieve　good　performance　in　the　heat　transfer　of　S-CO2,　and　can　be　used　in　solar　power　plant.　©　2019,　Science　Press.　All　right　reserved.