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7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
Design and Construction of the Hickory Hall Dormitory a twin study in the making
Presented by Adam J. Cohen, Architect, CPHC NA & EU, LEED AP
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
7th Annual North American Passive House ConferenceSeptember 27-30, 2012 Denver CO
Design and Construction of the Hickory Hall Dormitory
a twin study in the making
Presented by Adam J. Cohen, Architect, CPHC NA & EU, LEED AP
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
Session Learning Objectives:
7th Annual North American Passive House ConferenceSeptember 27-30, 2012 Denver CO
• Outline the envelope differences between Elm Hall (std. construction) and Hickory Hall (Passivhaus construction)
• Show a basic understanding of the economic feasibility of Hickory Hall vs. Elm Hall
• Describe the mechanical system strategy employed in Hickory Hall.• Describe why a dormitory with a double loaded corridor makes an
efficient Passivhaus.
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
Emory and Henry College, Emory, Virginia
Emory, Virginia
• Founded in 1836, opened its doors to students in 1838• Oldest college in Southwest Virginia• One of only a few colleges in the country whose entire campus is listed on the National
Historic Register• Dr. Rosalind Reichard, Emory & Henry’s 20th president is very progressive
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
ELMCHESTNUT
HICKORY
• New residential quad planned in 2006-2008• Elm Hall completed in 2010 • Hickory Hall to be completed December 2012• Chestnut Hall tentative construction date 2014
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
Elm Hall Completed August 2010
Hickory Hall Under Construction
• 40,000 sq ft • 36,000 sq ft
• 117 beds • 116 beds
• Modular wooden construction (3 floors) • Modular wooden construction (3 floors)
• Full concrete basement • Partial CMU basement (balance crawl space)
• Passivhaus & LEED • LEED
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
• Airtightness – not yet quantified• Hickory Hall assumed .6 ACH50• Elm Hall assumed 6 ACH50
• Slab - Added 4” termite treated EPS• Walls
• Concrete – Changed to insulated precast with interior insulated wire chase (2x4)• Walls added 2 ½” Roxul Cavity Rock exterior insulation
• Roof – Added 2” cellulose• Windows - Changed to PH certified windows (25% reduction in heat demand!)
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
• Plug, Lighting & HW Load Reduction Measures• Go to 1000 rpm washers instead of 600 to reduce dryer energy (suggested 1200 rpm)• Go to motor driven elevator• Occupancy sensors everywhere
• Not Implemented:• Dorm room energy feedback and competition• Solar HW heating
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
0
50000
100000
150000
200000
250000
300000
Losses Gains
Annu
al H
eat [
kBTU
/yr]
Heat Balance
Useful Internal HeatGain [kBTU/yr]
Annual Useful SolarHeat Gain [kBTU/yr]
Annual Heat Losses[kBTU/yr]:
Annual Heat Demand = 1.5kBTU/sqft yr!
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
• To determine room peak loads• Heating
• Upper northwest corner (3 sides exposed, twin window)• Minimalist occupants
• Cooling• Center south (1 side exposed, twin window)• Maximalist occupants
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
Mechanical System
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
7th Annual National Passivhaus ConferenceDenver, Colorado Sept. 27 – 30, 2012
CONTACT: [email protected](540) 774.4800
