Team M.A.R.S. (Ryan McDevitt, Matt Helm, Scott Klima, Abhinav Kalavar)

 Goals -To design and construct a model Zero Energy Home, while creating a practical living environment and still including all of the features we want in a house.  Important Features -Passive Solar Design -Efficient Appliances -Photovoltaic System -Man Cave -Geothermal Heating/Cooling

Location (city, state)Harrisburg, PA House size (floor area in square feet)4308 Number of floors3 URL of web site where info is found Number of occupants4 Number of bedrooms5 Type of heating system (forced air, hydronic, radiant floor, heat pump, etc. Electric geothermal heat pump Main heating fuel (electricity, natural gas, wood, oil, etc.) Electricity Size of photovoltaic system (kilowatts)8.9 Solar water heater (yes or no)Yes R-value of wall insulation36 R-value of ceiling insulation60 Ventilation air heat recovery (yes or no)Yes Predicted or measured annual energy use7.59 kilowatts

Mfg.Model # CapacityMEFWF Annual Energy Use(kw h/yr) Annual Water Use(gal/ yr) Energy Cost $/yr Water Cost $/yr Sewer Cost $/yr Tota l Op. Cost $/yr PricePayback /yr Whirlpool WFW94 HEX* ,990$51.61$19.96$29.94 $ $ Never Electric Geothermal Heat Pump WhirpoolWasher -Model WFW94HEX*+

 Goal  Window Area = 10% of 1 st Floor Area  Slab Area = 2-3 times the size Window Area on 1 st floor  Also within the range of the south facing windows  Results  Windows  1 st Floor Window Area = 200ft 3  1 st Floor Area = 1840ft 3  Window Area to Floor Area Ratio 10.9%  Slab Area  Area = 780  Slab Area to Window Area Ratio = 3.9

 Panels  Sunpower SPR-318-WHT-D  318W/panel  Size of PV system: 8.9kW  Reasons for using this model  Number of panels: 28 (7 panels in series)  Total Voltage: ~385V

 Inverter  Sunny Boy 9000TL-US  Max DC Power: 9400W  Peak Power Tracking Voltage Range: 300V-480V (mid-range of tracking voltage: 390V)

Top Floor View

 Open interior  Maximum potential of basement (Man Cave)  5 bedrooms  3.5 bathrooms  4,308 ft 2  Energy Efficient Appliances  Hardwood floors, except carpet basement  R-60 Ceiling insulation  R-36 Wall insulation

 Flat roof, lined with solar panels  Wood Exterior  Large Deck  Bay Window amongst other south facing windows

Chart 1 Chart 2

 Google Sketchup  Scale Modeling  Efficient Heating Systems  The utilization and benefits of Solar Energy  Difficulty creating a “realistic” ZEH  House size  PV system size  Understanding impact on environment  Teamwork  Time management  Fair distribution of work