This website requires certain cookies to work and uses other cookies to help you have the best experience. By visiting this website, certain cookies have already been set, which you may delete and block. By closing this message or continuing to use our site, you agree to the use of cookies. Visit our updated privacy and cookie policy to learn more.
This Website Uses Cookies
By closing this message or continuing to use our site, you agree to our cookie policy. Learn More
This website requires certain cookies to work and uses other cookies to help you have the best experience. By visiting this website, certain cookies have already been set, which you may delete and block. By closing this message or continuing to use our site, you agree to the use of cookies. Visit our updated privacy and cookie policy to learn more.
ES Magazine logo
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
ES Magazine logo
  • Home
  • Magazine
    • Current Issue
    • Digital Edition
    • Ad Index
  • Products
  • News
  • Sectors
    • Colleges/ Universities
    • Commercial
    • Government/ Institutional
    • Health Care
    • Hospitality
    • K-12
    • Mission Critical
  • Topics
    • Building Automation
    • Cooling & Chillers
    • Design/ Construction Process
    • Heating & Boilers
    • IAQ
    • Life Safety
    • Motors & Drives
    • Pumps & Flow Controls
    • Retrofits
    • Ventilation
  • Columns
    • Back2Basics
    • Building Automation Column
    • Case In Point
    • Commissioning
    • Editor's Note
    • Facility Files
    • IAQ: A Physician's View
    • Tomorrow's Environment
  • Multimedia
    • Videos
    • Podcasts
    • Webinars
    • Video Spotlights
    • Interactive Spotlights
    • Sneak Peek Spotlight
    • White Paper eBlast
    • Case Study eBlasts
  • Resources
    • eNewsletters
    • Continuing Education
    • White Papers
    • Industry Events
    • ES Store
    • Classifieds
    • Custom Content & Marketing Services
    • Market Research
  • Today's Boiler
    • Today’s Boiler Digital Edition
  • Directory
    • SourceBook
    • Take a Tour
  • Contact
    • Contact Us
    • Advertise
Home » Ventilator Helps Yield Dividends for Business School Addition
Case In Point

Ventilator Helps Yield Dividends for Business School Addition

June 28, 2001
Reprints
No Comments
The Tuck School of Business at Dartmouth College (Hanover, NH) was founded in 1900 as the first school of business management. Given this long-standing tradition of studying economics and business administration, it's no surprise that the design of its newest graduate student residence employs a state-of-the-art hvac system producing a healthy, comfortable living environment while delivering an annual return on investment that will eventually pay for itself.

Whittemore Hall is the focal point for residential and community life for both full-time M.B.A. students and executive program participants. The four-story, 45,000-sq-ft building consists of 60 private rooms; each with its own bath; 10 group study rooms; three conference rooms; and a distance learning suite (for tele- and video-conferences) all organized around a central, common living room to foster a sense of community and teamwork.

Design Decisions

It was the college's intention to make the building as energy efficient as possible. To this end, the project was developed by Marc Rosenbaum, P.E. from Energysmiths and BR + A, a Boston MEP consulting firm. The overall concept called for an energy recovery ventilator using an enthalpy wheel to supply 100% outside air to the bedrooms, while a more traditional variable-air volume (vav) system serves the public areas of the building. The latter was selected because the team felt it would most efficiently address the occupancy fluctuations in the common areas.

The design of the hvac system was further complemented by an extremely tight building envelope to reduce energy losses through air leakage, and by the use of triple glaze, low-e glass on the building's many windows. Based on prescriptive ventilation requirements dictated by ASHRAE 62-1999, it was judged that 14,700 cfm of outside air would be required in order to maintain an acceptable level of indoor air quality for the students. The decision was also made to use the exhaust air coming from the bathrooms to maximize the latent recovery.

Significant Savings

The energy recovery ventilator was supplied by Annexair, a Montreal-based air-handling unit manufacturer. Every aspect of the energy recovery unit was constructed in accordance with the school's overall design philosophy. "It was really nice to see a project like Whittemore, because it indicated to us that designers and specifiers are finally starting to realize that a truly energy efficient design requires a manufacturer that specializes in the these types of packaged units. We provided 2-in. double-wall construction, backward-inclined fans with airfoil blades, premium-efficiency motors, a steam preheat coil, a chilled water coil and, of course, a high-performance energy recovery wheel," says Anthony Palucci, Annexair's national sales manager.

The benefit of this type of comfort-to-comfort application is that energy can be conserved during both the summer and winter months. Based on a bin analysis for Hanover, the use of the wheel results in significant savings of $10,050 in annual heating and cooling costs for the facility. One other important feature is the ability to significantly downsize the capacity of other hvac components. Greg Sifferlen at GreenTech, the manufacturer's representative, says, "In most cases when an enthalpy wheel is used, the client can really save on first costs. In our case, we were able to reduce the total cooling required by approximately 42 tons."

Conclusion

Since it was completed only this past December, the building has not yet experienced a full cooling season. However, results from the past heating season were above expectations. The college's mechanical engineer, Bo Petersson relates, "One winter morning, with an outdoor ambient of 5°F, the unit supplied 55° air without opening the steam valve to the steam coil." ES

es-subscribe

Related Articles

Controls help school win Governor's Award for efficiency

Exhaust retrofit yields less labor, no odor for resort

Custom Dehumidification Units Help Elementary School Pass Makeup Test

Fabric duct helps save high school $380,000, no sweat

You must login or register in order to post a comment.

Report Abusive Comment

Subscribe For Free!
  • Print & Digital Edition Subscriptions
  • eNewsletters
  • Online Registration
  • Subscription Customer Service

More Videos

Popular Stories

Protecting Pharmacists

Protecting Pharmacists: New USP 800 Standards Focus on Safety in Handling Hazardous Drugs

A2L Nov 2019 Figure 1

A2L Refrigerants: Safely Addressing Flammability Concerns

Jeff Edwards

Jeffrey W. Edwards Presented with ASPE Award of Merit

Figure 1. Maximum operating temperatures

Venting Variety: Boiler Ventilation Systems Are Evolving Beyond AL29-4C

Ford Transforms its Dearborn, Michigan, Location with a CHP Plant

Ford Transforms its Dearborn, Michigan, Location with a CHP Plant

ES-20toWatch-winners250


Todays boiler

Events

December 30, 2030

Webinar Sponsorship Information

For webinar sponsorship information, visit www.bnpevents.com/webinars or email webinars@bnpmedia.com.

View All Submit An Event

Poll

Favorite Engineered Systems columns

Which Engineered Systems column is your favorite:
View Results Poll Archive

Products

The Green Energy Management Book

The Green Energy Management Book

Learn from our experts how to evaluate job opportunities, market your services, sell a Walk-through Survey, target areas for an Energy Audit, calculate energy savings, do retrofit work, and win continuing contracts for retrofit work.

See More Products

ES Kohler webinar


ES_2018Top10States_360

Engineered Systems Magazine

Engineered Systems December 2019

2019 December

Check out the December 2019 edition of Engineered Systems: Discussion of the "next generation" of building controls, the health impact of indoor particulate matter, evidence-based decision-making in the built environment and much more!
View More Create Account
  • Resources
    • ES Glossary
    • HVAC glossary
    • New Products
    • Mechanical Group
    • Partners
    • List Rental
    • Privacy Policy
    • Survey And Sample
  • Want More
    • Connect
  • Contact

Copyright ©2019. All Rights Reserved BNP Media.

Design, CMS, Hosting & Web Development :: ePublishing