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Boiler Green Initiative (BGI) Design Review. December 11, 2009 Neil Armstrong Hall of Engineering. Boiler Green Initiative. Agenda. Hillel House. Overview of team Hillel House Wind Turbine Bio Energy Questions. Boiler Green Initiative. Rachel Machbitz , Team Leader. Bio Energy.

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Boiler Green Initiative (BGI) Design Review

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Boiler green initiative bgi design review

Boiler Green Initiative (BGI)Design Review

December 11, 2009

Neil Armstrong Hall of Engineering

Boiler Green Initiative



Hillel House

  • Overview of team

  • Hillel House

  • Wind Turbine

  • Bio Energy

  • Questions

Boiler Green Initiative

Team overview organization

Rachel Machbitz, Team Leader

Bio Energy

Hillel House

Wind Turbine

Sean Zimmerman, Project Leader

Beth Doering, Project Leader

Jared Freyer,

Project Leader and Webmaster

Scott Sylvester

Isaac Payne

Fahad Ahmad

Yuanhua Cheng

Bryson Maikranz

Hannah Keller

Anthony Christie

Team Overview: Organization

Hillel House

Joseph Cox


Amber Ramsey

Liz Hoffa

Katie Jones

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Goals of the project

Goals of the Project

Hillel House

  • Focuses this semester:

    • To prevent soil erosion

    • Make the property more aesthetically pleasing

    • Complete rain garden design

  • Secondary goals

    • Make the Hillel House more energy efficient

    • Determine alternative energy sources

    • Community education

Feasibility chart for alternative energy

Feasibility Chart for Alternative Energy


Not Practical


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Design criteria

Design Criteria

Hillel House

  • Criteria

    • Must be at least 10 feet from building

    • Size should be 20-30% of roof drainage area (for sandy loam soil)

    • Garden should optimize backyard drainage

    • Must have outlet for overflow

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Boiler green initiative bgi design review

Water Balance Calculations

  • Basic mass balance calculation

    • Retained water = Inputs – Outputs



garden charging rate

Top view, rain garden catchment

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Boiler green initiative bgi design review

Input: Rain Intensity

Using this intensity, input ≈ ft3/hr

Figure : Rain Intensity for Lafayette, IN for T-Year Events – The longer the storm the greater rainfall depth for T-Year events.

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Boiler green initiative bgi design review

Output: Infiltration Rate

  • Soil Type: Carmi

    • Well drained, deep sand/gravel

    • Sandy loam surface texture

  • Infiltration test

    • Surface: 3.17 in/hr

    • Subsurface (9 in): 3.75 in/hr

    • Error

      • 3D movement

      • Time constraints

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Water calculation results

Water Calculation Results

Team Name

For a 2 year rain event, runoff is capture d for the following storm duration:

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Discharge calculations

Discharge Calculations

Team Name

  • Assumed laminar, incompressible fluid

  • Bernoulli’s Eqn. – used to calculate velocity in pipe

  • Manning’s Eqn.– used to calculate fluid velocity in open channel

  • Discharge Eqn. – used velocity to find discharge

V = velocity in ft/s

p = pressure (psf)

g = force of gravity (ft/s^2)

ρ = specific gravity

z = elevation (ft)

n = surface roughness coefficient

R = hydraulic radius (ft)

S = slope of energy line º slope of bed

V = velocity (ft/sec)

V = velocity (ft/s)

A = area (ft^2)

Q = VA

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Flow diagram

Flow Diagram

Hillel House


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Rain barrel

Rain Barrel

Hillel House

  • Why use a rain barrel?

    • Increase water holding capacity

    • Environmentally friendly way to use water – don’t need as much from tap

    • Water storage for use during dry periods during summer

      • 50 gal would provide .85 in, or 53.3% of available water to plants

      • 50 gal costs $0.15, however customer would like the barrel

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Rain barrel design

Rain Barrel Design

Hillel House

Drain pipe

4 in

Slip capValve

50 Gal. Rain Barrel

4 in


2 in

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Rain barrel decision

Rain Barrel Decision

Hillel House


60 Gal. Deluxe Rain Barrel with Downspout Diverter, Hunter Green


  • Durable, UV-stable 25% recycled resin

  • Lid can be removed for dipping large watering can

  • Plastic, can drill holes into it

Digital image. Home Depot. Web. 3 Dec. 2009. <>.

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Flowers for rain garden

Flowers for Rain Garden

Hillel House

  • Constraints:

  • Tolerant of partial shade

  • Moisture conditions

  • Not invasive

  • Non spreading

Beatles spring or vernal sedge

Marsh Blazing star


Yellow Columbine, Golden Columbine

Celandine Poppy, Wood Poppy

White water lily

Day Lily


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Timeline and accomplishments

Timeline and Accomplishments

Hillel House


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Bill of materials fall 2009

Bill of Materials: Fall 2009

Hillel House

Received $4,000 grant from Tipmont REMC


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Discussion of future plans

Discussion of future plans

To be done this semester:

Finalize Our Design

Next semester:

Buy Materials

Oversee Construction

Plant flowers

Delivery Date: Spring 2010

Hillel House


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Hillel House


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