preliminary design review austin texas
DESCRIPTION
Preliminary Design Review Austin Texas. Ray Casper - Foundations Engineer John Scanlon - Structural Engineer Jimmy Mounnarat - Fluid System Engineer Igor Babushkin - Solar Thermal Engineer. PDR Agenda. Introduction Floor plan layout House elevation drawings Foundation analysis - PowerPoint PPT PresentationTRANSCRIPT
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Ray Casper - Foundations EngineerJohn Scanlon - Structural EngineerJimmy Mounnarat - Fluid System EngineerIgor Babushkin - Solar Thermal Engineer
Preliminary Design Review
Austin Texas
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PDR Agenda• Introduction• Floor plan layout• House elevation drawings• Foundation analysis• Roof Truss analysis• Hydronic subsystem analysis• Heat Transfer analysis• Building and Flat Plate Collector• F-Chart analysis
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Floor Plan Layout
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House Elevation Drawings
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Foundation Options
Poured Concrete Cement Block Low labor costQuickerRequires more materialPrevents water intrusionBetter heat retention
Low material costHigh Labor CostJoints allow for water
intrusionWeaker
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Foundation Calculations 8’ Soil Depth 50’ x 30’ foundation 15 degree slope MMax on 50’ North wall
Soil Density 100lb/ft3
House load = 200lb/ft2
8 inch thick poured FOSCOMPRESSION = 87.2
FOSBENDING = 2.2
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Roof Truss Analysis
A “Double Howe” truss using 2X8 beams proved to be suitable for our application.Roof pitch is variable depending upon FPC placement.
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Hydronic Subsystem Analysis
• Schematic
• Head Loss, Pump size, Performance Curves
• Copper vs CPVC
• Cost Comparison
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Hydronic Schematic
http://www.backwoodshome.com/articles/hackleman65.html
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Head Loss
• Max Head Loss per system 51.4 ft.• Assuming 3 FPC’s.
Pump Size• 2 pump options in series.
• Taco pump – 2 x $219.75
• Grundfos pump – 2 x $269.75
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Taco Cast Iron Model 009-F5
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Grundfos UP26-96F
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Cost Analysis
• Copper vs CPVC ~ 33%• Copper – corrodes, promotes
corrosion, expensive.• CPVC – higher reistance to heated
water, no soldering, no corrosion, cheaper.
• Pumps ~ 19%
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Heat Transfer Analysis
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Solar Thermal
Compare Two FPC’s Determine Number of Panels
Determine Angle
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Alternative Energy– AE-26
• Roof angle is Bestat around 31 degrees
• Best area is around 54 ft2
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Economics of the AE-26
Chose 6 Panels because of theThermal Output Data
Panel : $825.00Price per ft2: $34.88Area: 25.35 ft2
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Sun Earth, Inc -- EP-21
• Very strange slop calculation,28 degrees is best slope
• Collector Panel area seems to be the best at 41.11 ft2
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Economics of the EP-21
• Similarly to the previous choice, 6 panels are chosen
Panel: 609.97Price per ft2: $34.88Area: 21.35 ft2
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Questions?