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(200001)(200233),,,,,DiscussiononapplicationanddevelopmenttrendofrooftopairconditioningunitAbstractRooftopairconditioningunit,asimpleandreliableductairconditioningsystem,hasbeenwidelyusedinmanycomfortareas,suchasfactoryandsupermarket.Inthispaper,severaltypesofrooftopunitsareintroduced,andthecurrenttechnicalperformanceandtheapplicationofrooftopunitinChinamarketarepresented.Basedontheabove,somefuturetrendsandpromotionofrooftopunitsarepredicted.Keywordsrooftopairconditioningunit,scrollcompressor,currentapplication,futureresearch140,,,1,:Ó,,;Ó,--,;Ó,,,;Ó,;Ó,,,;Ó,;Ó,,,,;Ó,,,,12211,,10.535kW,455kW,,()(),223200713,++,,,60kW,,,,4212,,(BA)21211:Ó70%,,,Ó,,,,,Ó,30%,,Ó,,Ó,Ó,,,5,,,;,,,21212(FreeCooling),,,,,,(FreeCooling):3:(,420m2,7,12),3,67,33200716721213(BA),,2:(1);(2)Lontalk,,SiemensHoneywell21214,,,,,,():(1),,;,(2)CO2,,,3,Ó,,Ó,,()Ó(),,,,3,+(Rooftop+VAV)20071134242,83.3%,42,124;29;33;45;51:;;;:()4320071