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IAQ

Case In Point

Air curtains keep things flowing at WI dairy farm

August 2, 2013
Energy-saving mechanical systems are popping up everywhere — even cows are feeling the benefits
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Do No Harm: Protecting IAQ In Health Care Settings

Day-to-day operations and the occasional renovation create two sets of distinct threats to IAQ and patient health.
July 1, 2013
Day-to-day operations and the occasional renovation create two sets of distinct threats to IAQ and patient health. From monitoring stations and magnehelic pressure gauges to multiple resources for design and O&M guidance, the author points to recent projects and current wisdom to create a valuable resource.
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Case In Point

Mixed-flow impeller brings real-world results to lab retrofit

July 1, 2013
The old saying goes, “Killing two birds with one stone.” But what if you could kill six with one stone? That’s what Abdul Momen, associate director of maintenance and operation for the facilities department at Georgia State University, aimed to accomplish at the school’s 216,000-sq-ft Natural Science Building.
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Case In Point

Natatorium dehumidification goes swimmingly, aided by geothermal and heat recovery

July 1, 2013
The city of Côte Saint Luc in Quebec recently opened its new Aquatic and Community Centre with a cost of $18 million. While this may seem like a hefty price tag, the city will be saving millions of dollars on energy costs, thanks in part to the center’s HVAC system.
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Staying Dry & Comfortable With Liquid Desiccants

Let a scientist with experience both at the National Renewable Energy Laboratory and on the manufacturer side discuss the possibilities of a newer dehumidification technology within the framework of the same old moisture challenges.
June 1, 2013
In the summer, conventional air-conditioning systems in buildings are challenged to meet peak humidity loads. Over time, buildings have reduced their heat (sensible) load, but have done less to reduce their moisture (latent) load. As a result, this moisture load can become too large for conventional air-conditioning systems to handle.
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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
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.
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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.
April 24, 2013
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.
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Critical Facility Mechanical Equipment And System Reliability

Come to terms with the key terms, and learn how to wrestle with the cumulative effect as each component tries to edge the overall system reliability downward.
March 29, 2013
In today’s world, so-called “high-performance, sustainable” facilities are a dime a dozen. But many of these buildings rely on overly complex mechanical systems to carry out their mission.
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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
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.
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Humidification: Options, Amines, and the Impacts of ASHRAE Standards 62.1 And 170

November 26, 2012
Whether your system uses boiler steam or another method, the authors walk you through the pros and cons of various sytems, the evolving standard landscape regarding those corrosion-fighting amines, and some energy reduction ideas.
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3/27/14 11:00 am EST

How to Calculate Backup Power Supply Requirements for Your Facility

On-Demand This webinar reviews how to determine power requirements of facility loads; electrical characteristics and impact of different types of loads such as large motors and UPS systems on power supply sizing; acceptable power sources and other constraints applied by building codes; and how software tools can be used to simplify the process of calculating backup power requirements.  

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Check out the April 2014 issue of Engineered Systems, with features on backup power supply requirements, cyberattacks, and much more!

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Design Flaws

Following up on Howard McKew's April "Tomorrow's Environment" column: Have you ever thought twice about reporting problems with another firm's design? What did you do?
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Tomorrow's Environment Podcast

This series from longtime columnist and chronic forward-thinker Howard McKew covers a lot of ground -- from retrocommissioning to systems training, on toward checklists for drawings and tips for meeting minutes. Click HERE to be taken to the podcast page!

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