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2012 October

Check out the October 2012 edition of Engineered Systems

How The Culture Of Inefficiency Is Outfoxing LEED®, ASHRAE, And Efficiency Programs

By Peter Kleinhenz, MS, P.E., Greg Raffio, MS, P.E., Charlie Schreier, MS, P.E., John Seryak, and Franc Sever, MS
3 Comments
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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A New Generation Of Smoke Detectors

By Fred J. Conforti
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Here, we depart from our occasional focus on controlling smoke, yielding the floor to a life safety veteran weighing in about a new development for detecting it. Some historical context around detector types and testing methods paves the way for an explanation of why the new approach may become a welcome option for many applications … if it catches on.
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Are We Unknowingly Wrong-Sizing Ducts?

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.
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Right Steps For Retrofits

By Kendra Tupper, P.E., LEED® BD+C, ASHRAE BEMP & HPDP
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Achieving deep energy savings is especially challenging when you’re faced with an existing structure with poor orientation, historic preservation requirements, and little space for renewables. The Byron Rogers Federal Office Building’s retrofit is scheduled to be completed in 2013; the post-renovation building is projected to consume less than half the energy it did before.
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The Scene of the Crime

By Robert Beverly
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Whether it’s the quiet riot of info overload or some felony act of inadvertent inefficiency, your perfectly nice facility is almost certainly the silent victim of performance malfeasance.
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Case in Point

Colorado hotel checks into rebates for sensors, lighting upgrades

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When you check into a hotel, you fully expect to be able to control the temperature of your room. The downfall to providing customer comfort is that it can raise energy costs if a room cools down or heats up when nobody is in it.
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Case In Point

All you can heat: Tankless water heating solves chain restaurants’ problems

No Comments
Hot water is the lifeblood of any restaurant kitchen operation. Lacking a sufficient and ready supply at the correct temperatures, as prescribed by local health authorities, facility management usually has no choice but to lock the doors until the problem is fixed.
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Case In Point

Cancer center finds peace and quiet with duct liner

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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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Pharmaceutical Projects Are Different

By Howard McKew, P.E., C.P.E.
One Comment
Especially compared to school challenges, the proper reply is, “Oh, please.”
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Troubleshooting Systems With Onboard Equipment Controllers

By Rebecca Thatcher Ellis, P.E.
One Comment
Skimpy interface with BAS means more points of contention.
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BAS vs. PLC for HVAC Control

By Paul Ehrlich, P.E. and Ira Goldschmidt P.E.
No Comments
Let’s take the comparison shopping beyond data centers.
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