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Calculated Conditioning: The IAQ Of UFAD

UFAD and displacement ventilation systems require accurate estimates to meet relative humidity requirements and ensure efficient operations. Take a look at a few design options, and contemplate the reader challenge at the end.

April 26, 2013

By Robert Bolin, P.E., HBDP, LEED Fellow and Andrew Reilman, P.E., HBDP, LEED AP BD+C

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Since their introduction in Europe in the 1950s, and their domestic rise in specification during the 1990s, UFAD and displacement ventilation systems promise significant energy savings as a direct result of a higher supply air temperature that yields an increase in the use of economizer or free cooling hours.

Case In Point

Air handler helps wire manufacturer reach LEED® Platinum

Installing a new air handler allows factory to save 20% in energy costs and 88% in water consumption.

March 29, 2013

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When Encore Wire, a manufacturer of copper electrical wire and cable was ready to expand, they knew they wanted sustainability to feature prominently in the design of their new building.

Case In Point

AHUs with energy recovery improve hospital’s ventilation rates while preserving IAQ

Following the installation of an ERV, odor and cooling complaints disappear at CoxHealth's Turner Center.

March 1, 2013

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A multi-function health services facility in Springfield, MO is a showcase for sophisticated air quality management. The Turner Center is a unit of the CoxHealth system and is part of the Cox South health care campus in south Springfield.

Ventilation To Improve IAQ In Schools

The author heads to the blackboard to break down fundamental outside air and sensor strategies (and how they can work together).

February 26, 2013

By Paul Schlueter

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Providing high-quality education for our nation’s children in grades K-12 has never been more important than it is today. The world is changing quickly, and we need to provide an educational system that prepares them for this fast paced world in which we live.

Case In Point

Out of this world HVAC design protects space shuttle from earthly elements

January 31, 2013

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The space shuttle Endeavour is a survivor.

Identifying Energy Components in Exhaust Ventilation Systems

January 30, 2013

By Khalil Kairouz, Ph.D., P.E. and Dale Price

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Several variables can drag down an otherwise efficient ventilation design. Some are quite familiar. However, others such as acceleration and hood entry effect may lurk unrecognized or misunderstood. Compensation via overdesigned systems isn’t the answer, either, so what to do? Get to know these individual elements better for better exhaust results.

Case In Point

Exhaust ductwork solves tough MEP challenge at research facility

January 2, 2013

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Finding new solutions to the complex challenges of global climate change is the task that drives the scientists and energy industry leaders who collaborate in the Energy Biosciences Institute at UC Berkeley’s new five-story, 11,300-sq-ft Helios Energy Research Facility in downtown Berkeley.

Are We Unknowingly Wrong-Sizing Ducts?

October 31, 2012

By Ernie MacFerran

5 Comments

A small team led by an award-winning Florida engineer decided to test conventional wisdom about pressure loss, both in a straight run and in comparing supply and exhaust scenarios. Early returns suggest the data may be flowing in an unexpected fashion.

The Importance Of Facility Air Balance

October 31, 2012

By Luke Facemyer

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Brush up on the environmental factors that can throw things out of, well, balance, and note how space pressure problems can create assorted complications.

Case In Point

Cancer center finds peace and quiet with duct liner

October 19, 2012

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A lot will happen under the single rooftop of the new Wesley Long Cancer Center in Greensboro, NC. The 33,000-sq-ft addition to the Moses Cone Regional Cancer Center includes a business office, lobby/waiting area, admitting, phlebotomy lab, breast cancer treatment, exam areas, chemotherapy, an auditorium, and education classrooms.

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ES Gallery: Snapshots & Systems

Check out highlights from projects featured in our magazine this year!

3/20/13 2:00 pm EST

Risk and Reward within Reason – Identifying Data Center Best Practices via Lessons Learned and CFD Analysis

On-Demand The presentation will be a discussion of current and emerging mechanical best practices informed by real world experience and project based analysis.

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Check out the May 2013 edition of Engineered Systems

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