preliminary design presentation group 5 arlington, va kyle desrosiers, foundations engineer mohamed...
TRANSCRIPT
Preliminary Design Presentation
Group 5Arlington, VA
• Kyle Desrosiers, Foundations Engineer• Mohamed Mandeel, Structural Engineer• Matthew Switzer, Fluid System Engineer• Peter Bowlin, Building Thermal Systems
Engineer• Evan See, Solar Thermal Systems
Engineer
Agenda
1. Foundations Analysis
2. Roof Truss Analysis
3. Fluid System Analysis
4. Building Thermal Analysis
5. Solar Thermal Analysis
6. Conclusion/Questions
Foundations Analysis
Kyle Desrosiers
Foundation Design
• Type: Full basement, conditioned• Material: Concrete with steel reinforcements
(if necessary), still evaluating• Dimensions: 50ft wide x 26ft long Rectangle • Max depth (relative to ground surface)= 7 ft
– (at front of house)
• Wall thickness= 10 in.
Foundation Design
• Footing:– Width= 16 inches– Location= 1 foot below frost line– Frost line= 10 inches
• Radon Mitigation– Action Level: 4 pCi/L– Avg radon level for Arlington County=3.4 pCi/L– Methods: Spray, Air ventilation system, soil
depressurization
Foundations- Sources
• http://www.askthebuilder.com/N4_Thickness_of_Poured_Concrete_Foundation_Walls.shtml
• http://county-radon.info/VA/Arlington.html• http://soildatamart.nrcs.usda.gov/Manuscripts/
VA013/0/Arlington.pdf• http://publicecodes.citation.com/st/nc/st/b2v02/
st_nc_st_b2v02_18_sec005_par042.htm
Roof Truss Analysis
Mohamed Mandeel
Truss Design
Truss Type: Room-in-attic truss Beam Size: 2”x6” or 2”x4”, still calculating Number needed: 26 trusses total for 50' of
length, spacing of 2' between trusses. Pro/E model Calculations are done using Ansys
Basic Room-in-Attic Truss Designed
Fluids System Analysis
Matthew Switzer
Basic Storage & Pump Needs
• Water Storage Needs• Approx. 1 gal per 1ft2 FPC
• Estimated FPC area• 300-400 ft2
• Pump TBD by FPC needs• Most likely a centrifugal pump• Flow rate• Feet of head required
Copper vs PVC
• Copper • Long term durability• Increased resale value• Less bulky• Corrosion• Long Warranties• Costly
~http://www.builderswebsource.com/techbriefs/cpvccopper.htm
• PVC• Approved for almost all
building codes• Resists
corrosion/abrasion• Cost effective• Easy installation• 100 psi rated @ 180oF• Self-insulating• Diameter limitations
(1.5”-2” max)• “Plastic” water taste• Easily Damaged
Exchanger Types
• Flow Types• Cross Flow• Counter Flow
– Most Efficient
• Parallel Flow• Multi-pass Exchangers
– Combination of flows
• Shell and Tube Exchangers• Separate “circuits” of water flow• Number of passes• Size depends on economics and maintenance needs• High pressure & high temperature
Building Thermal Analysis
Peter Bowlin
MonthAverage
Temperature (F)
Average Precipitation
(in)
January 36.5 3.48
February 39 3.07
March 48 4.12
April 58 3.06
May 67.5 4.18
June 77 3.28
July 82 3.96
August 79.5 4.05
September 72.5 4.06
October 61 3.19
November 50.5 3.45
December 41 3.69
This is data typical of a moderate to colder climate, so the required R-values of the insulation used will be fairly high.
DOE/CE-0180January 2008
Department of EnergyAssistant SecretaryEnergy Efficiency and Renewable Energy
Insulation Location R-Value
Attic 49
Floor 25
Wall Sheathing 5
Wall Cavity 15
Concrete or Masonry Wall 15.6
Crawl Space Wall 25
Basement Wall Exterior 10
Basement Wall Interior 11
Insulation Fiberglass Mineral Wool Plastic Fiber Polyurethane Foam Cementitious FoamVacuum
Insulated PanelCellulose
Windows Single GlassDouble
Glazed (1/4”)Double Glazed
(3/4”)Double Glazed (2 Suspended Films)
Low- ELow-E
(2 Suspended Films
X
DoorsWood Hollow
Core FlushWood Solid Core Flush
Wood Storm (50% Glass)
Metal StormMetal Insulated
StormX X
Siding Brick Cement Fiber Wood Clapboard Shingle Stucco Stone X
Solar Thermal Analysis
Evan See
Possible SupplierSun Source Energy Products, Inc.
PO Box 31
Netcong, NJ 07857
• Why?– Local to DC– Competitive Prices– Works with several
dealers
Source: “Logo”. Solar Energy Parts Catalog. 2009, 10/19/09 <http://www.sunsourceproducts.com/catalog/cataloglist.asp?header=mfg&filter=SunEarth%20Inc.&mfg=SE>
SunEarth Inc. Collectors - Price
EC - Series
• More expensive
• Copper absorber with black chrome surface
• 10 Year Warranty
EP - Series
• Less expensive
• Copper absorber with selective paint surface
• 10 Year Warranty
Sun Source Energy Products. Solar Energy Parts Catalog. 2009. 16 October 2009 <http://www.sunsourceproducts.com/catalog/cataloglist.asp?header=mfg&filter=SunEarth%20Inc.&mfg=SE>.
SunEarth Inc. Collectors - Price
EC - Series
• 24 sq ft– $936.70
• 32 sq ft– $1,060.80
• 40 sq ft– $1,310.00
EP - Series
• 24 sq ft– $890.00
• 32 sq ft– $952.00
• 40 sq ft– $1,180.00
Sun Source Energy Products. Solar Energy Parts Catalog. 2009. 16 October 2009 <http://www.sunsourceproducts.com/catalog/cataloglist.asp?header=mfg&filter=SunEarth%20Inc.&mfg=SE>.
Roof Angle
Optimum Roof Angle of 35.5 degrees
Optimum Azimuth at 0 degrees
(South)
Source: FCHART Software Package. 2008
Collector Size
Life Cycle savings improves with larger collectors
40 sq ft Collector is recommended
Source: FCHART Software Package. 2008
Number of Collectors
Peak Value for Life Cycle Savings is 10
Fewer is recommended to save on initial costs and potentially greater savings
Source: FCHART Software Package. 2008
Economics Overview
Potential for Savings of at least $1000
Can provide all needed DHW and Heat during summer months
Economics SummaryFirst Year Fuel Cost $ 378First Year Fuel Savings $ 239Initial Investment $ 7400Life Cycle Savings $ 1324Life Cycle CostsFuel $ 13867Equipment $ 7454Total $ 21321
Solar Heat Dhw Aux f [10^6 Btu] [10^6 Btu] [10^6 Btu] [10^6 Btu] [ ]
Jan 5.69 12.37 2.255 12.47 0.147Feb 7.20 10.51 2.049 9.43 0.249Mar 9.33 7.43 2.230 5.64 0.416Apr 10.03 4.15 2.072 2.24 0.640May 10.34 1.26 2.028 0.24 0.926Jun 10.45 0.22 1.867 0.00 1.000Jul 10.71 0.09 1.838 0.00 1.000Aug 10.06 0.19 1.820 0.00 1.000Sep 9.20 0.61 1.801 0.15 0.940Oct 8.39 4.65 1.950 3.30 0.500Nov 6.42 7.13 1.997 6.56 0.281Dec 6.06 12.07 2.160 11.86 0.167Year 103.87 60.66 24.068 51.89 0.388
Source: FCHART Software Package. 2008
Questions?
Thank You