BOAT HANDRAIL HEATING SYSTEMBoat Hand RailsHeating SystemDesignAlternate DesignsFinal DesignDesign SpecificsComputations and TestingSlide 9Slide 10Slide 11Cost AnalysisConclusionBOAT HANDRAIL HEATING SYSTEM Group 11Oscar GarciaNik HartneyPamela MillsNicole TurnerBoat Hand RailsUsed to provide a secure handholdExposed to external weather conditionsSusceptible to temperature changesMay become uncomfortable to holdHeating SystemAllows passengers to remain secure Provides comfortHelps prevent frostbiteDesignNeeds to run off of minimal energyVersatile enough to be applied to any boat with an inboard engineMust have a controllable temperature as to not overheat or remain too coolAlternate DesignsElectrical resistance heaterSeawater coolant heat exchanger+ -Resistive HeaterElectrical SourceHeat ExchangerSea Water FeedHeating FluidHandrailPumpFinal DesignRaw seawater coolant flowing directly through handrailHarnesses waste thermal energyNo need for complex electrical systemHandrailSeawater ExhaustDesign SpecificsDual opposing flows to regulate average temperatureThermally conductive fluid conduitVariable throttle for seawater coolant intakeOpen fluid systemPiping system insulationComputations and TestingSystem parameter assumptionsKmWDkNuhext23.51External Forced convective heat transferTrail = 27C Tatmosphere = -20CDrail = 2 inches = 0.051m Vwind = 20 mi/h = 8.94m/sTexhaust=92 C kWQengine342Computations and TestingHandrail heat loss per meter mWTTDhlQoext/8.3842533000508.03.51)(2,2Computations and TestingKmWDNukh2int/88.12901905.0676.066.3lnTcmQp KAhQT 506.4901905.088.1298.384intlnLog mean temperature differenceComputations and TestingMass flow rate and Velocity of seawater sec/00186.0506.4918.43848.0lnkgTcQmp sec/00326.001905.0100000186.02222mDmV Cost AnalysisPiping material selection: inexpensive, conductiveConnections and ValvesExternal thermometerConclusionProvide a temperature controlled railing systemMinimal impact on boat’s systemsAllow comfort and security for boat
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