Because　of　its　simple　structure,　pipeline　without　cracking　in　winter　and　other　advantages,　solar　air　collectors　are　getting　more　and　more　applications　in　industry,　agriculture　and　residence.　However,　air　has　the　disadvantages　of　small　specific　heat　and　density,　so　how　to　increase　the　collector　efficiency　and　heat　collection　of　air　collectors　has　become　the　focus　of　research　on　solar　air　collectors.　In　recent　years,　multi-surface　condenser　air　collector　has　gradually　developed,　which　has　the　advantages　of　small　size,　easy　installation　and　maintenance　management,　and　high　outlet　temperature.　Our　research　team　has　put　forward　a　multi-chamber　trough　solar　air　collector　with　single　collector　tube.　However,　it　has　the　shortcomings　of　low　air　flow　and　low　heat　collection　efficiency　however.　In　order　to　improve　solar　greenhouse　solar　energy　utilization,　this　study　proposed　a　new　type　of　multi-chamber　trough　solar　air　collector　with　dual　collector　tubes　to　improve　the　collector　performance.　This　collector　is　combined　with　the　heat　storage　ventilation　wall　of　solar　greenhouse　with　solar　active-passive　＇triple＇　structural　phase　change　to　constitute　the　active　solar　thermal　storage　system,　which　is　used　in　Urumqi　solar　greenhouse.　Based　on　the　theory　of　optics　and　heat　transfer,　the　experiment　was　designed　and　carried　out　to　investigate　the　influence　discipline　of　different　parameters　on　thermal　performances　and　optical　performances　for　multi-chamber　trough　solar　air　collector　with　dual　collector　tubes.　The　parameters　include　the　structure　size　(the　relative　position　and　the　length　of　double　collector　tubes),　air　velocity　inside　the　collector,　inlet　air　temperature,　and　solar　radiation.　The　test　instruments　include　air　collector,　temperature　sensor,　flowmeter　and　data　collection　system.　The　experiment　results　illustrate　that　the　collector　performance　of　the　double-tube　collector　is　better　than　that　of　the　single　tube　collector.　Compared　with　the　single　collector　tube　concentrator,　the　air　flow　of　the　dual　increased　by　100%,　the　heat　collection　per　unit　area　of　the　dual　increased　by　16%,　and　the　heat　collection　efficiency　of　the　dual　increased　by　9%　(the　heat　collection　efficiency　of　the　dual　was　44%-52%　without　tracking　in　winter).　The　relative　position　of　double　collector　tubes,　air　velocity　inside　the　collector　and　inlet　air　temperature　were　discussed　in　the　study.　The　relative　position　1　of　double　collector　tubes　is　the　best　and　the　best　air　flow　rate　in　the　tube　is　1.8-2.0　m/s.　The　collector　was　also　applied　to　the　solar　greenhouse　in　Urumqi,　and　the　results　illustrate　that:　From　November　2015　to　February　2016,　when　the　collector　length　is　16　m　and　the　air　velocity　inside　the　concentrator　is　2.0　m/s,　the　heat　collecting　system　can　provide　solar　thermal　energy　of　about　50-65　MJ/day　for　solar　greenhouse　on　the　condition　of　sunny　days,　35-45　MJ/day　on　the　condition　of　cloudy　days　and　20-25　MJ/day　on　the　condition　of　overcast　days　which　have　weak　solar　radiation.　The　heat　collecting　system　can　provide　solar　thermal　energy　of　about　5　325　MJ　for　solar　greenhouse　by　active　heat　storage　of　the　wall　in　whole　winter.　This　study　can　provide　the　reference　for　the　thermal　performance　optimization　of　the　collector　and　the　new　technical　support　for　the　efficient　use　of　solar　energy　in　solar　greenhouse.　©　2017,　Editorial　Department　of　the　Transactions　of　the　Chinese　Society　of　Agricultural　Engineering.　All　right　reserved.