Solar energyhasbeenusedforthepreservationofagriculturalproducesincegenerationsalloverthe
world.Recentresearchondryingrevealstheshortcomingoftheopensundrying.Inordertominimize
the shortcomingoftheopensundrying,variousdryingtechniquesareproposed.Amongthemprevious
effort ongreenhousedryerhasbeenpresentedinthisstudy.Itcanbeusedtodolowtemperaturedrying
of cerealgrains,fruits,vegetables,spicesetc.Thegreenhousedryerisoperatedinthetwodifferent
modes ofdrying— natural convectionandforcedconvection.Recentlydevelopmentofgreenhousedryers
namely solartunneldryer,solartentdryer,improvedsolartunneldryer,androoftypeevenspansolar
greenhouse dryerhasbeenstudied.Anorganizedapproachforthecategorizationofgreenhousedryers
has evolved.Asimulationmodelfordryingperformanceproposedbyauthorshasbeenstudied.Products
dried inthegreenhousedryerarefoundtobesuperiorinqualityascomparedtothoseinopensun
drying. Inaddition,theproductiscompletelyprotectedfromexternalcalamitiessuchasrain,insects,and
animals. Allrecentdevelopmentsingreenhousedryingareemphasizedinthiscommunication.
พลังงานแสงอาทิตย์ shortcomingoftheopensundrying, variousdryingtechniquesareproposed.Amongthemprevious พยายาม ongreenhousedryerhasbeenpresentedinthisstudy.Itcanbeusedtodolowtemperaturedrying ของ cerealgrains, ผลไม้, ผัก, spicesetc.Thegreenhousedryerisoperatedinthetwodifferent โหมด ofdrying- convectionandforcedconvection.Recentlydevelopmentofgreenhousedryers ธรรมชาติคือsolartunneldryer, solartentdryer, improvedsolartunneldryer, androoftypeevenspansolar dryerhasbeenstudied.Anorganizedapproachforthecategorizationofgreenhousedryers เรือนกระจกได้evolved.Asimulationmodelfordryingperformanceproposedbyauthorshasbeenstudied.Products แห้ง inthegreenhousedryerarefoundtobesuperiorinqualityascomparedtothoseinopensun อบแห้ง Inaddition, theproductiscompletelyprotectedfromexternalcalamitiessuchasrain แมลงและสัตว์ Allrecentdevelopmentsingreenhousedryingareemphasizedinthiscommunication
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