This　paper　presents　a　real-time　experimental　measurement　of　a　novel　compact　unglazed　solar　thermal　facade　(STF)　system　at　outdoor　environment　in　Shanghai,　China　for　about　a　whole　summer　week.　It　demonstrates　the　daily　average　solar　thermal　efficiency　fluctuated　from　40%　to　45.5%.　The　overall　result　indicates　the　advantages　of　the　STF　with　simple　structure,　low　cost　and　high　feasibility　in　architectural　design　for　energy-efficient　building　application,　especially　at　future　district　or　city　levels.　(C)　2016　The　Authors.　Published　by　Elsevier　Ltd.