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Articles by Carl C. Schultz, P.E.

Closing The Cogeneration Gap

Hospitals, hospitality, municipalities, and industrial applications may face their best chance in years to save money (and natural resources) with a combined heat and power (CHP) system. From steam turbines that rely on boilers to gas turbines, on to reciprocating engines and fuel cells, the variety of options is as wide as the range of settings where it might make sense. Reacquaint yourself with CHP, including the sidebar’s “small” example that can save over $100,000 per year.
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Natural Ventilation Basics

Natural ventilation may sound like an unconventional, sustainability-driven idea to some. However, it was the energy-friendly status quo up through the middle of the last century, back when “green buildings” referred to paint color. If you consider traditionally favorable conditions, several design considerations, and control options, you may recognize a future project where natural ventilation is an idea whose time has come again.
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Next-Generation Cooling Is Looking Up

After becoming an established comfort tool in Europe and Australia, chilled beams are finding their way into North American designs, and they can generate benefits all the way back to the central plant. Learn to discern the two types available, design tips for both, and the ways they coexist with controls, heating, and other building systems. By Carl C. Schultz, P.E.
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Engineering For High Altitude

The effect of altitude on the performance of HVAC systems and components all comes down to the variable of atmospheric pressure. Below 10,000 ft, this effect is negligible on certain properties of air such as specific heat, thermal conductivity, and viscosity. However, important properties of air, such as density, enthalpy, and dewpoint temperature, are all affected to an extent that influences the way we must engineer our HVAC systems.

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Facility Risk Assessments

In many projects, and in government facilities in particular, staff must dedicate more time and money to assessing possible threats and risks relating to IAQ and mechanical systems. Then it's a matter of deploying the proper mitigation measures. Look over internal release, external release, and shelter-in-place as response tactics, and review the latest in air cleaning technologies, from particle and sorbent filtration to UV light.
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Biological Safety Cabinets

The engineering community’s general knowledge of biological safety cabinets was already below that of fume hoods in general, and then the NSF changed the classification of cabinets, only increasing the air of mystery. Nevertheless, the past few years have seen a steady increase in funding for bioresearch – often involving university facilities. With more and more design opportunities involving BSCs, now is the chance to breathe easier by reviewing classification, operation guidelines, and tips for these important devices. By Carl C. Schultz, P.E.
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Mold & Moisture In Commercial Buildings

We like to talk about breaking the mold around here, but this month, we’re talking about stopping the ominous, fungal kind. Mold has several opportunities to creep in, starting before the building is even finished. Consider the risks during renovation, and the relationship between climate and building envelope, and perhaps the section on remediation won’t become relevant. By Carl Schultz, P.E.
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ES Gallery: Snapshots & Systems

Check out highlights from projects featured in our magazine this year!
5/13/15 11:00 am EDT

When's & Why's of Fuel Options and Selection for Backup Power

ON DEMAND This presentation will bring listeners up to speed on what the best options are today and in the near future. 

Engineered Systems Magazine


2015 May

Check out the May issue of ES with the cover story: VRF with Heat Recovery Ventilation In PreK-12 Schools.

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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.

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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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