Habitat For Humanity

December 14, 2001

Team Organization

Web / Architectural Team Prathima

Venkatesan Jimmy Johnson Berook Moges Sam Jin Renae Hopf

Energy Efficiency Team Anshul

Mangal Matt Selvey Rachel Austin Chris Costanzo

Team Leader – Jimmy Johnson

Overview Web / Architectural

Database and Bar Coding System Volunteer Tutorials

Energy Efficiency Setback Thermostats Solar Fan

Point of Sales Database Purpose

Track inventory and donors in the Habitat resale store

Increase the organization and maintainability of the resale store

Potential addition to resale stores at other HFH locations

Point of Sales Database Status

Database currently being tested by Habitat Database will be updated based on

Habitat’s feedback Bar Coding System being designed and

developed Bar Coding System

Utilize hand held bar code scanner w/ keyboard wedge

Bar code labeling software Interface to database using Visual Basic

Point of Sales Database Design

Users will login into system User information stored in separate

database Once logged in users will be interfaced

with product database Users will be able to view, edit, delete,

and add new product information Options available based on privileges

Point of Sales Database Users will also be able to search and

display specific information Each product will be labeled with

unique bar code Status

Login functional but needs more error checking

Product information viewable but not yet searchable or editable

Point of Sales Database Future

Donor and invoice interfacing to be added Login and product information interface

to be completed early next semester Testable version for Habitat Resale store

ready by middle of next semester Demo

Volunteer Tutorials Purpose

Train volunteers online using text and videos so time is not wasted during home construction

Status 16 text tutorials are currently

accessible thru web Drywall, Framing, and Felt paper

video is added to revised tutorials

Volunteer Tutorials Updated tutorials

http://epics.ecn.purdue.edu/hfh/web_project/HCG/construction_tutorial.htm

Future plans Continue adding video with captions

to more of the text tutorials Add voice recording to videos

Setback Thermostat Purpose

Lower energy usage of the house by implementing temperature control thermostats

Meet with homeowners and give them an orientation on the thermostat.

Honeywell T8600 Chronotherm III Thermostat

Installed Spring 2001 in 3 Lafayette homes (1211 Washington, 1213 Washington and 255 Green St.)

Homeowners trained to use thermostat with tutorial

Data collection throughout heating months

Set-Back Thermostat

Programmable thermostats can lower energy use in home

Modeled in Energy-10

software package

Honeywell T8600 Chronotherm III Thermostat

Weekday/Saturday-Sunday programming

Temporary override Vacation override User Friendly Donated by Honeywell

to Habitat International

Orientation with Homeowners Gauged homeowners knowledge of

thermostats in general. Weekday Habits

Talked about their work and sleep habits

Any children? Weekend habits Other features of the thermostat

(Vacation settings, etc.)

Data Collection Monthly contact with homeowners Collected quantity of energy

“therms” in units of DTH 1 DTH = 1,000,000 BTU’s This was done to avoid changing

gas prices per unit in the analysis

Energy-10 Energy-10 software can identify the best

combination of energy-efficient strategies, including day lighting, passive solar heating, and high-efficiency mechanical systems

Can be input with different specifications that pertain to the houses we are analyzing.

Will be used with setback thermostat settings as well as non-setback thermostat settings. (benchmarks)

Data Analysis Data collection will last throughout

the heating season. Collected data will be compared

with and plotted against Energy-10 simulated data

Energy savings will be determined

Problems This winter has been unseasonably warm and

may not reflect normal winter heating In a report by “The Daily News Tribune” Lisa

Glover, a Commonwealth Gas spokesperson claims that “Residential heating bills could be as much as 17 percent lower than last winter.”

Because of this the team will have to consider further analysis continuing through another winter

Solar Powered Attic Fan Purpose

To provide cost effective and low maintenance solution to having low air circulation in a habitat for humanity home

Provide insight into bigger projects involving solar energy

Design flaws with previous fan Size of Solar Panels AC to DC conversion Cost

Solar Powered Attic Fan

Solar Powered Attic Fan How it works

Solar Panel w/ tracking system - Charge Controller - Battery - Fan

Problems Charge controller not fully functional Integration of tracking system Mounting of fan on a roof of a actual habitat

home

Solar Powered Attic Fan Future Plans

Continue working on a fully functional and tested model of the fan

Mount on roof of resale store Collect data from resale store to see what

type of a difference the attic-fan is making

Team Conclusions

Arch/Web Team Resale Database

Updated database is currently being tested by Habitat

Future implementation of Bar Coding System

Tutorials Continue to update, revise, and add to current

tutorials Research best way to present materials Continue to integrate video with current text

tutorials

Team Conclusions

Energy Team Setback Thermostat:

Energy bills will be collected and analyzed Energy-10 analysis will be done Estimated $50 - $80 savings a year

Solar Power Exhaust Fan