S ubcooling Mini-Split Senior Capstone Design
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Subcooling Mini- Split Senior Capstone Design Bangor Hydro Presentatio 12/17/13 Samuel Prentiss Matt Strong Bruce Tuttle
description
S ubcooling Mini-Split Senior Capstone Design. Samuel Prentiss Matt Strong Bruce Tuttle. Bangor Hydro Presentation. 12/17/13. Tonight’s Points. Subcooling Heat Pump Installation & Testing Return on Investment Marketable Product. The Heat Pump Cycle. R-410A Vapor Condenses. - PowerPoint PPT Presentation
Transcript of S ubcooling Mini-Split Senior Capstone Design
PowerPoint Presentation
Subcooling Mini-SplitSenior Capstone Design
Bangor Hydro Presentation12/17/13Samuel Prentiss Matt StrongBruce TuttleTonights PointsSubcooling Heat Pump
Installation & Testing
Return on Investment
Marketable ProductThe Heat Pump Cycle
Image Source: http://www.air-conditioning-and-refrigeration-guide.com/ R-410A Vapor CondensesR-410A Liquid EvaporatesR-410A Vapor CompressedR-410A Liquid ExpandsHeat Pump No Subcooling
Image Source: http://www.dc429.4shared.com/docSaturated Liquid LineSaturated Vapor LineHeat Pump With Subcooling
Image Source: http://www.dc429.4shared.com/docQsubcoolerQevaporator_additionalAll Saturated Liquid After Passing Through EEVLatent & Sensible HeatSubcooler Coil Output
What is Coefficient of Performance?`Without Subcooling`With SubcoolingCOP=3COP=4C.O.P. for the Visual LearnersC.O.P. Due to Subcooling
At Least 20F Subcooling Needed to be BeneficialCompressor EER
Air Outlet TemperatureCapstone PlanBuild Subcooler Unit (Jan-Feb 2014)
Install at University Garage (Feb 2014)1 ton Fujitsu Mini-Split Heat PumpGE GeoSpring Hybrid Water HeaterSubcooler Unit
Monitor & Improve!!
Key Components
Image Source: http://www.amazon.comImage Source: http://greenenergymaine.comFujitsu 12RLS2 (1 ton)GE GeoSpring
Important Features
Centrifugal Duct FanMicro-Channel CoilConnect Liquid Refrigerant Line
Saturated Liquid From Indoor UnitSubcooled Liquid to Outdoor UnitAirstream Flows Over Coil
GE GeoSpringActuated Louvers10 Square Duct8 Round DuctCentrifugal FanSolid Model
Combine TogetherDeliver Heated Airstream to GeoSpring Intake
Heated Airstream Will Diffuse Into Garage if GeoSpring is not RunningUniversity Facilities GarageImage Source: https://maps.google.com/maps
Estimated Cost (With Rebates)Subcooler UnitFujitsu 12RLS2GE GeoSpringInstallation
Total Capital Cost= $1000.00= $1600.00= $700.00= $1400.00
= $4700.00Payback PeriodHow will The Subcooler Save Money?By increasing the performance of the Heat Pump! COP With Subcooling > COP No Subcooling
Payback Period
Equation derived with help from Peter Talmage.
Payback PeriodPrice of Electricity=$0.16/kWh*
4817 Hours of Operation Per Year**
Sources: (* Bangor Hydro ** James LaBrecque)Payback Period
Payback Period* = 24.4 Years Motivation
Source: Google PatentsMotivationTHEIR TECHNOLOGY: ADDITIONAL CONDENSER, EXPANSION VALVE, EVAPORATOR, AND COMPRESSOR OUR TECHNOLOGY: ONE ADDITIONAL COIL. SummarySubcooler Unit Increases Heat Pumps COP & EERUniversity of Maine Facilities GarageMonitor Installation:Fujitsu Mini-Split Heat PumpGeospring Hybrid Water HeaterSubcooler UnitImprove Design!
Final Marketable Product $$$Mass Produce as an Accessory for Heat Pump
Minimal Installation Time for HVAC Technician
Customize Where Heated Airstream is Delivered
Free Heat Is Currently Being Wasted!!Thank You For Your Time!
