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A Home in Palo Alto

A Home in Palo Alto. Overview: - Foundations - Architecture - Solar Thermal Systems - Building Thermal Systems - Structural - Fluid Systems. Bruce McIver, Linfield Oaks, Menlo Park, CA. Foundations. Will Lentlie. Foundation Engineer. Foundation calculations Material selection

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A Home in Palo Alto

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  1. A Home in Palo Alto Overview: - Foundations - Architecture - Solar Thermal Systems - Building Thermal Systems - Structural - Fluid Systems Bruce McIver, Linfield Oaks, Menlo Park, CA

  2. Foundations Will Lentlie

  3. Foundation Engineer • Foundation calculations • Material selection • Mediate issues between roof, wall and foundation subsystems

  4. Foundation • Expectations of a foundation • Hold up the house • Keep out soil • Keep out water and gas • Provide storage

  5. Foundation Calculations W = 307 in t = 8 in L = 546 in

  6. Foundation Calculations Weight of House F = 40 lb/ft2 * 2600 ft2 F = 10400 lbs Assuming compressive strength of 2000 psi Factor of Safety = 256

  7. Foundation Calculations 12” 120” 307” 26” 546” Hydrostatic Loading F = ½(ρ*W*D2) F 125000 lbs

  8. Architecture Kurt Stratton

  9. Tentative Floor plan 24’x24’ Garage 45’x25’ Main House Flexible room sizes Overall Main Dimensions will shrink slightly Flexible Layout

  10. 2nd Floor 3 Bedrooms 2 Bathrooms Same outside dimensions as Main Floor 3-D Layout coming soon

  11. Solar Thermal Systems Jon Seaman

  12. F-Chart Analysis • Number of Panels ~ 11

  13. F-Chart Analysis • Collector Area ~ 120 ft^2

  14. F-Chart Analysis • Angle of Collector

  15. F-Chart Analysis • Collector Azimuth = 0 deg (Directly South)

  16. F-chart Panel Efficiency Analysis FR*UL (Test Slope) Closer to 0 = Higher Lifecycle Savings

  17. F-chart Panel Efficiency Analysis FR*TAU*ALPHA (Test Intercept) Closer to 1 = Higher Lifecycle Savings

  18. Panel Type • Glazed Panel – Based on Efficiency Analysis • Direct System - Heats DHW though panels • Indirect System - Uses Coolant or other heat transfer fluid through heat exchanger to heat water

  19. Some Choices for Panels • Alternate Energy Technologies • Direct System • Y= 0.706 Slope= -0.865 • Enerworks, Inc. – COL-4X8-NL-SG1 • Indirect System - Heat-Transfer Fluid: Solution of 50% Propylene-Glycol • Y= 0.7683 Slope= -0.711 • Rheem – Rheem RS21-SC • Indirect System - Glycol Solution • Y= 0.75 Slope= -0.858 • Vressman Manf. Company – Vitosol 300 type SP3, 2m2 • Indirect System • Y= 0.574 Slope= -0.537

  20. Building Thermal Systems Leanne Cushing

  21. Insulation • Bonded Logic is a Recycled Denim material. No damage to the environment • Pink Fiberglas is the most typically seen material: • Cellulose is comprised of 80% of recycled materials (generally paper) and can be applied in any space (loose of spray fill). Images found on Bonded Logic’s website, Owenscorning.com, lifetimeroofingltd.com, advancedfibreinstallations.com.au, thomasnet.com

  22. Windows • Offer the option for a variety of styles with low U-value windows but can be more expensive than basic glass windows. • Both apply for the Energy Star $1500 rebate • Over time, will save on energy costs and ,

  23. Exterior • Engineered Wood such as • Dryer climate so no worries on failure • Doesn’t rot like regular wood • Still needs maintenance with time • Vinyl • Stays warm • No need for maintenance through house’s life Images taken from collinswood.com, progcontractors.com

  24. Structural Analysis Jesse Wykstra

  25. Structural Analysis A Fink roof truss design will be used for preliminary calculations in ANSYS. These solutions, obtained from ANSYS, will be verified by hand calculations. The truss members will be constructed from 2” x 4” Douglas-fir wood. ½” thick plywood will be used for the sub-roof. Architectural shingles will be used for the roofing material.

  26. Structural Analysis A double Howe roof truss will be used for the final design to improve the overall strength of the structure. The final roofing structure will be modeled in Pro-E. The strength will be calculated using ANSYS. 5/12 pitch Trusses on 2’ centers

  27. Started Pro-E Design Truss span ~ 26’ Truss overhang ~ 2’/side Overall height ~ 6.25’ Plywood weight ~ 50 lbs/sheet Shingle weight ~ 70 lbs/bundle 3 bundles of shingles cover 100ft2

  28. Fluid Systems Kyle Benesh

  29. Fluid Systems Goal: attach eleven (11) solar collectors to the plumbing and exchange the heat into the DHW.

  30. Fluid Systems Piping: Insulated Copper Increased efficiency Quality of connections Ease of install with equipment Better under pressure Decreased noise level

  31. Fluid Systems Heat Exhanger: Solar Brazed Plate • High Efficiency • Specifically designed for solar use • Inexpensive • SolarTubs.com – SOL - 125

  32. Fluid Systems Pump: Bronze Centrifugal • 55'of Head Maximum, 3/4 hp • Exceeds needs (>~51’) • McMaster-Carr - 8249K82

  33. Fluid Systems • Storage Tank • 80 Gallon Capacity • High efficiency • Model: HSTG 080 001 • Brand: Heliodyne

  34. Fluid Systems • Plumbing specs: • 1.5” dia. Piping • Total length to complete is TBD (>100’) • System flow rate: 12 gpm

  35. Questions?

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