A　novel　photovoltaic-thermal　and　air　dual-heat-source　evaporator　was　designed　in　this　study.　The　evaporator　was　constructed　using　the　micro　heat　pipe　array　instead　of　the　aluminum　absorbing　plate　to　optimize　the　structure.　Two　fans　were　installed　on　the　evaporator　to　forced　convection　heat　transfer　on　the　air　side.　Then　a　novel　dual-heat-source　heat　pump　system　was　developed,　and　the　system　was　evaluated　under　various　conditions.　The　results　showed　that　the　system　exhibited　excellent　performance　when　operated　under　solar　energy　source　or　solar　energy　and　air　dual-heat-source　modes.　The　coefficient　of　performance　increased　by　23.6%-31.4%　compared　with　the　air　source　mode.　The　function　of　the　surrounding　air　under　the　solar　energy　and　air　dual-heat-source　mode　varied　between　exothermic　and　endothermic　effect.　The　amount　of　heat　absorbed　from　the　surrounding　air　under　the　solar　energy　and　air　dual-heat-source　mode　gradually　decreased　with　an　increase　in　the　system　operation　time.　The　electrical,　thermal　and　overall　efficiencies　as　well　as　coefficient　of　performance　of　the　system　significantly　fluctuated　with　varying　solar　radiation　and　the　surrounding　air　temperature.　The　findings　provide　a　basis　for　further　optimization　of　the　system.　©　2023