Featured Stories

Radiant Success: Designing For Energy-Efficient Comfort In California

November 26, 2012
Managing solar loads and incorporating radiant ceilings were just part of the plan for this five-level mixed-use building. Chilled beams and chiller plant decisions joined ventilation strategy to serve both occupants and LEED ambitions.
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Retrofitting Primary Chilled Water Pumps With VFDs

November 26, 2012
Take a large hospital, subtract unexamined rules of thumb, add meaningful incremental improvements like VFD’s and a controls upgrade, and what do you get? Smarter engineering via improved performance for both the pumps and the chillers. But it all starts with one little question.
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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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How The Culture Of Inefficiency Is Outfoxing LEED®, ASHRAE, And Efficiency Programs

November 9, 2012
How many energy-efficient or certified buildings are not living up to the label? Very, very many, if this Ohio commissioning/auditing firm’s experience is close to typical. They report on common weaknesses in efficiency strategies and on real-life patterns of upgrades gone wrong across an array of equipment types. While flaws in well-intentioned processes remain, a more careful investment of human energy can still yield the desired reduction in building energy.
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Modular Central Utility Plants: A Different Approach

November 9, 2012
Done right, going modular can be a good fit for hospitals in search of efficiency. From design to specification to pre-shipment, the process demands engineering attention to the right details at the right times. Get a designer’s notes from experience and learn how to take advantage of what a modular central plant can offer.
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Pumping and Flow Controls in Geothermal Heat Pump Systems

November 9, 2012
What are the key technical challenges and design options for optimizing a geothermal heat pump design? Review the pros and cons involved with centralized or distributed pumping, with hybrid or decoupled systems, and with the controls that can guide them.
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Less Capacity Is The Coolest

October 31, 2012
Sometimes, what seems like a need for more cooling capacity could be the need to take a hard look and fine-tune the existing chiller plant. With a hospital expansion coming up, the team on this UMass Memorial Health Care project avoided adding up to 120 tons of capacity with tactics that included attacking inefficiencies in piping, valves, cooling towers, and controls.
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Are We Unknowingly Wrong-Sizing Ducts?

October 31, 2012
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.
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Wireless Pneumatic Thermostats Deliver Smoother Upgrade

October 31, 2012
Follow the engineer at a large hospital complex in Phoenix as he pursues less disruptive and less expensive ways to boost BAS performance and budget wellness, all in the name of patient comfort.
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Energy-Efficient Dehumidification In Health Care Facilities

October 31, 2012
With a wide spectrum of specialized spaces and particular outside air requirements, a hospital’s en-ergy-efficiency efforts start when arranging which areas go where. From there, the author leaves no technology unturned — chilled beams, geothermal, DOAS, VRF, etc. — in evaluating which ap-proaches might best contribute proper ventilation and humidity in which environments, with an eye on minimizing facility energy consumption.
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Check out highlights from projects featured in our magazine this year!
3/25/14 2:00 pm EST

Improving Cooling and PUE in Existing Data Centers

On-Demand This webinar will provide cost-effective practical tips and feasible retrofit solutions that can be implemented in operational data centers to address some cooling issues and improve energy efficiency.

Engineered Systems Magazine

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2014 July

Check out the July 2014 issue of Engineered Systems, with features on chiller retrofits in health care facilities, building automation, and much more!

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