TrustConEngineeringPteLtd30TohGuanRoad#08-01Singapore608840Tel:(65)65611389Fax:(65)65615489Email:info@trustcon.com.sgWebsite:www.trustcon.com.sgProposalforLaundryHVACSystemSafeAstoriaUpgradePagePAGE\*MERGEFORMAT4of4IssueExperiencedLaundryRoomhighroomtemperatureduringsummertime2012inAustraliawhenallwashersanddryersareinfulloperation.(Approx42deg.Coutdoortemperature)ObjectiveToanalyzetheexistingHVACsystemandproviderecommendationtoupgradetheexistingsystem.Referencedrawinganddocument:[1]M300-01R2HVACOneLineDiagramFWDQuarters[2]M301-02R2HVACArrg't&DetailsLowerDeckQuarters(FWDBlock)[3]51-GA-001to012_Rev.2-GeneralArrangement[4]J123R2LaundryRoomArrangementandDetails[5]ISO7547-ShipsandMarineTechnology–Air-conditioningandventilationofaccommodationspaces–DesignconditionsandbasisofcalculationsExistingHVACandVentilationsystemforLaundryRoom:[1]LaundryEquipment:4x35LbsWashingmachines(MaxiMWC35)4x50LbsTumbledryers(MaxiMD50)[2]HVACandVentilationSystem(referreferencedrawingM300-01andM301-02):CoolingairfromAHU-01:1280m3/hNaturesupplyair:1060m3/hMechanicalexhaust:2200m3/hExhaustairfromdryer:1275m3/h(eachunit)[3]ExistingSystemproblemanalysis:DescriptionAirDistributioninLaundryRoomwhenDryerNotInOperation(m3/hr)AirDistributioninLaundryRoomwhenDryersinFullOperation(m3/hr)RemarksMechanicalExhaust22002200Airextractedoutfromroom(Constantflowrate)DryerExhaustAir03825Airextractedoutfromroom(3dryersinoperation)CoolingAirfromAHU-0112801280TreatedcoldairfromAHUsupplyintotheroom(Constantflowrate)ActualNaturalAirSupply9204745ActualmakeupnaturalaircompensatedintotheroomPercentageoffreshairApprox40%Approx80%HighamountoffreshairnottreatedflownintotheroomwhendryersinoperationBaseonthedatashownabove,weestimatedtheexistingHVACsystemcoolingcapacityforlaundryroomisapproximately4.4kW.Thiscoolingcapacitydidn’tconsidertheheatemissionfromdryersandwashingmachinesneitherconsiderthelatentheatfromnaturalsupplyaircompensatedwhenthedryer