12/3/12. Solar Decathlon Collegiate competition between 20 international teams held by US DOE...
If you can't read please download the document
12/3/12. Solar Decathlon Collegiate competition between 20 international teams held by US DOE Objective: Design Build Operate Design to be… Cost effective
Solar Decathlon Collegiate competition between 20 international
teams held by US DOE Objective: Design Build Operate Design to be
Cost effective Energy efficient Aesthetically pleasing
Product Selection Competition Rules Compromise between
Engineering and Architecture Energy Efficiency System Compatibility
Market cost Supply Cost Biggest factor in product selection
Guidelines
Slide 9
Energy Consumption
Slide 10
SolarSun Energy SolarMount Evolution (UNIRAC) Compatibile with
Canopy House Modular Design 43 Bosch Solar Module 255 Wp
(Monocrystalline) Branches
Slide 11
SolarSun Energy Sunny Boy 8000 and 3000 inverters Tigo Energy
Module Maximizer Gateway and Management Unit Web-based module level
monitoring
Slide 12
SolarSun Energy 36.5161 kW per day
Slide 13
SolarSun Energy SunDrum Increases efficiency of solar panels by
7% Estimated 463 MJ of thermal energy produced per day
Slide 14
SolarSun Energy Integrated Solar Thermal System Radiant
Flooring V V V PCM Storage Tank EHot Water Outlet SunDrum Hot Water
Heater Cold Water Inlet
Slide 15
HVAC Selection Mitsubishi products: Wall-Mounted & Cassette
style units Multi-Zone Capability i-See Sensor & Directional
Vanes Redlink control Directional Air Flow
Slide 16
Max Cooling Capacity: 29400 Btu/hMax Heating Capacity: 34800
Btu/h HVAC Mini-Split Components Supply & Return - Units were
initially selected based on estimated load requirements
Slide 17
House Total HVAC Loads ItemCooling Load (Btu/h)Heating Load
(Btu/h) Envelope2821.269768-5239.500997
Ventilation544.359375-1010.455425
Infiltration830.7694886-2979.803998 Fenstration3447.726891 Internal
gain1669.75 Total Load9313.875523-9229.760421 25% Modification
Factor *Modifies for best case scenario11642.3444-11537.20053 50%
Modification Factor *Modifies for worst case
scenario13970.81328-13844.64063 Home HVAC Loads
Slide 18
Heat Collection SunDrum Floor Heating Load Calculations Heat
Load Factor25% (best case)50% (worst case) Total Energy Available
(BTU/hr)18,274.5 Heat load (BTU/hr)-11,537.20-13,844.64 Net Heat
Excess (BTU/hr)4909.812602.37
Slide 19
Thermal Capacity Selected VitocellB dual heat exchanger as
auxiliary storage tank System is comprised of a 30/70 ratio of
water to phase change material To meet target temperature (120 F ),
Puretemp 48 was chosen as PCM
http://viessmann.kotelki.ru/users/images/viessmann/vitocell/vitocell_100_b.jpg
http://www.jwderyan.com/images/vies-vcc.jpg
Slide 20
Static Thermal Capacity of Solar Tank Calculations Heat Load
Factor25%50% Heat load (BTU/hr)-11,537.20-13,844.64 Net Heat
Available (BTU/hr)4,909.812,602.37 Water Thermal Capacity
(BTU/lbm)30.0626.67 Water Storage Capacity (BTU)5,941.895,271.93
Total Capacity [PCM + Water] (BTU)45,802.1445,132.17 Total Tank
Standby Time (hr)3.973.26 Thermal Capacity
Slide 21
Radiant Flooring Hot Water Radiant Floor Heat Radiant Flooring
Utilizes the excess heat stored in the water holding tank Multiple
zones are supplemented by secondary heat source Decreases the
heating loads that may be placed on the mini-splits.
Slide 22
Radiant Floor Heating Load Calculations Heat Load Factor25%
(best case)50% (worst case) Heat load (BTU/hr)-11,537.20-13,844.64
Water Cp (BTU/h-F)0.999 Water Mass Flow Rate (lbm/hr)681.6 Minimum
Tank Temperature ( F) 9094 T to achieve Heat Load ( F) -16.94-20.33
Radiant Flooring Heat Transfer Rate: Q = m*Cp* T
Slide 23
Pressure Drop Calculations DescriptionNumber Cv Factor Total
(ft) Ball Valves214.228.4 Tee104.242 Union10.44 Water Heater128
Pipe50 Total148.84 Pressure Drop (psi/ft)0.059 Total Pressure Drop
(psi)8.78156 Pump Selection
Slide 24
MQ Pump (Grundfos, Olathe, KS)
Slide 25
Fire Suppression All Solar Decathlon houses are required to
have a wet sprinkler system to comply with: 2013 Solar Decathlon
Building Code 2012 International Residential Code 2013 National
Fire Protection Association System is separate & independent
from potable supply water system Dedicated supply tank Dedicated
pump for pressurization Dedicated piping system
Slide 26
Fire Suppression Tyco Rapid Response LFII Flush Residential
Sprinkler Head 20 x 20 Q = 22gpm P = 27.4psi Calculations (D)
Density D = 0.1(gpm/ft 2 ) (Q END ) End Head Flow Rate (K)
Coefficient of Discharge K = 4.2 (P END ) Pressure at End Head P =
(Q/K) 2 Selection Criteria Temperature Rating Coverage Area
Coverage Density Pressure Demands Sprinkler Head Selection Q END =
21.6gpm P END = 27.43psi
Slide 27
Electrical HUEE Central Information Hub Security System Weather
Application Indoor Temp Outdoor Temp Outdoor Humidity Energy
Production Energy Consumption Media Streaming
Slide 28
Slide 29
Conclusion Accomplished Designed Integrated Solar Thermal
System Energy Analysis of Canopy House Sizing and Selection of
Products Design Development Deliverable Unaccomplished Product
Ordering (January 2013) Final Construction Documentation (February
2013) Construction of House (March 2013)
