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Building for the Future: Designing a Passive House Residence Hall at Emory & Henry College
Jesse FreedmanJoint Energy ManagerHollins University/Emory & Henry College
Introduction• Who I Am• What We Did• How We Did It• What We Plan To Do
Who I Am• Joint Energy Manager• Made possible by a generous grant from the Jessie Ball duPont
Fund• Direct a three-year collaborative energy conservation project• Two hours (120 miles) between the two campuses• Modeled loosely on the Five Colleges joint energy manager
What we did• Second of three
residence halls• Nearly identical to it’s
predecessor (LEED Silver spec)• Built using modular
construction• Approximately $4.7
million• Seeking Passive House
Certification
What is Passive House• World’s most stringent
building energy code• Airtight building
envelope (<.6 ACH50)• 4.75 kBtu/sf/yr heat
demand• 38.1 kBtu/sf/yr
primary energy• Heat recovery
ventilation
Source: http://www.passivehouse.us/passiveHouse/PassiveHouseInfo.html
How we did it• R-30 walls, R-50 roof• Triple-glazed windows• Ground-source heat
pumps (15 tons)• 18 Energy Recovery
Ventilators• Air-tight building
envelope • preliminary blower
door test <.2 ACH50
Building Envelope
Presiden
t's House
Leaky
Moderate
Tight
Passive
House Sta
ndard
Terra
Haus
Hickory
Hall0
5
10
15
20
25
30
Air Tightness (ACH50)
Passive House Standard
Terra Haus Hickory Hall0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Windows
Elm Hickory0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
U-value
Modular Construction• Click here to see a video of the construction process
Fiscal and Energy Performance
Elm Hall Hickory Hall Average (for <200 beds)
$-
$10,000.00
$20,000.00
$30,000.00
$40,000.00
$50,000.00
$60,000.00
$70,000.00
$80,000.00
$90,000.00
$-
$50.00
$100.00
$150.00
$200.00
$250.00
Costs
Cost/bed Cost/square foot
Elm Hall Hickory Hall ASHRAE 90.1-2010
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
45,000Energy Intensity*
BTU/square ft/year
*Hickory Hall based on modeled data; average based on ASHRAE 90.1-2013
What we plan to do• Comparison energy
study of Elm and Hickory• Short-term and
longitudinal behavior study• Measure student
behaviors and academic performance
Thanks to: