A　new　solar　air　collector　that　combines　the　use　of　flat　micro-heat　pipe　arrays　(FMHPA)　and　evacuated　tube　is　developed　and　investigated.　Using　FMHPA　as　the　central　transporting　component　in　a　solar　air　collector　is　an　effective　approach　to　improve　the　collector＇s　thermal　properties　and　reduce　its　pressure　drop.　The　thermal　properties　and　pressure　drop　of　the　FMHPA　solar　air　collector　are　analyzed　in　detail.　The　main　objective　of　this　paper　is　to　report　test　results　of　the　FMHPA　solar　air　collectors　which　includes　the　effects　of　different　seasons　and　airflow　rates　on　the　thermal　efficiency　and　the　pressure　drop　of　the　air　collector.　In　summer,　the　thermal　efficiency　of　the　collector　reaches　73%　under　stable　operation.　In　the　testing　airflow　range　condition,　the　pressure　drop　is　less　than　25　Pa　when　the　flow　rate　is　below　201.6　m3/h.　The　relative　uncertainty　of　thermal　efficiency　is　approximately　7.73%.　(C)　2015　Elsevier　Ltd.　All　rights　reserved.