Early-age　heat-induced　cracking　is　a　potentially　fatal　problem　for　critical　concrete　structures　such　as　liquefied　natural　gas　storage　tanks.　This　paper　reports　on　a　novel　automatic　air-cooling　system　designed　to　solve　the　problem.　The　system　was　designed　following　a　series　of　air-cooling　experiments　in　China　on　concrete　walls　during　the　first　72　h　after　casting.　An　air　velocity　of　approximately　12　m/s　appears　to　provide　effective　cracking　control　for　ambient　air　temperatures　up　to　30　degrees　C,　while　the　optimal　cooling　segment　length　was　found　to　be　approximately　14　m.　The　paper　aims　to　provide　a　reference　for　the　application　of　air　cooling　for　any　large-scale　concrete　structures　at　risk　of　early-age　cracking.