The　heat　storage　rate　of　phase　change　components　for　a　building　envelope　is　low,　because　the　thermal　conductivity　is　low　and　the　surface　heat　transfer　is　not　sufficient　for　the　phase　change　materials.　In　order　to　increase　the　rate　of　heat　storage,　the　phase　change　component　is　placed　under　mechanical　ventilation　to　test　the　regenerative　rate　of　phase　change　component　under　different　supply　air　temperature　and　air　velocity　conditions　in　the　experimental　platform　for　researching　thermal　performance　of　phase　change　component.　Finite　difference　method　is　also　used　to　calculate　the　thermal　storage　process　of　phase　change　component　by　Matlab　software　to　expand　the　experimental　air　supply　temperature　conditions.　It　also　calculates　the　energy　consumption　of　the　system　considering　the　energy　consumption　of　the　fan,　and　an　effective　ventilation　method　is　proposed.　The　results　show　that　changing　the　supply　air　temperature　or　air　velocity　greater　impacts　on　the　heat　storage　rate　of　liquefaction　process,　but　fewer　impacts　on　the　heat　storage　rate　of　regenerative　process.　Improving　the　supply　air　temperature　or　air　velocity　can　shorten　the　phase　change　completion　time,　it　also　can　improve　heat　flux　of　the　component＇s　surface.　When　the　air　velocity　was　1.0　m·s-1,　and　the　supply　air　temperature　increased　from　34　to　80,　the　average　heat　flux　of　liquefaction　process　increased　from　23　W　to　322　W.　The　percentage　of　heat　storage　in　liquefaction　process　decreases　with　the　increase　of　air　temperature,　and　can　be　constant　with　the　increase　of　air　velocity.　In　case　of　the　phase　change　component　is　combined　with　mechanical　air　supply,　it　should　be　considered　in　heat　storage　of　the　system　and　power　consumption　of　the　fan.　In　the　same　air　velocity　conditions,　the　time　of　achieving　maximum　energy　savings　ultimate　steady.　When　the　supply　air　temperature　is　80,　the　air　velocity　is　2.0　m·s-1,　the　time　is　1.6　h,　the　system　can　achieve　maximum　energy　savings　for　891.8　kJ.　©　All　Right　Reserved.