摘要
UsingMassonpineasspecimens,whendryingmediumsareoverheatedsteamandhot-airrespectively,preheatingcharacteristicsofwoodundervacuum-floatingpressuredryingarediscussedbymeasurementofinternaltemperaturefieldandvariationofmoisturecontentduringperiodofpreheating.Therelationshipbetweendryingmediumconditionsanddryingrateofwoodrevealsthat,firstly,comparedwithprocessofair-drying,timeneededtobepreheatedundervacuum-floatingdecreaseddramatically,meanwhile,themagnitudeofcondensationonthesurfaceisrelativelylarger.Secondly,dryingrateofwoodundervacuum-floatingpressureincreasescoupledwithtemperatureofmedium,reductionofabsolutepressure,andraiseoffluctuationrateofpressure.Thesequenceoffactorscontributiontodryingrateislistedasfollowing:temperatureofmedium(t)>fluctuationrateofpressure(f)>absolutepressure(p).
出版日期
2004年04月14日（中国Betway体育网页登陆平台首次上网日期，不代表论文的发表时间）
