Stay Connected with Engineered Systems
We are on Facebook, Twitter, LinkedIn, etc.

Articles by Carl C. Schultz, P.E.

A Tall Tale

What seemed like a garden variety chiller retrofit turned out to have its share of thorns. Fortunately, the story also includes a few twists for the better, including a creative cold-weather cooling strategy and a mechanic still on staff who had kept the original specifications from 1965. Throw in some equipment dilemmas and utility wrangling, and you have an HVAC adventure tale with a happy ending. By Carl C. Schultz, P.E.
Read More

TB, SARS and the Surgical Suite

North Colorado Medical Center was determined to provide surgical facilities for its local population, which experiences a larger than usual TB rate, and this article is about how NCMC makes it work with careful ventilation and filtration tactics. By Carl C. Schultz, P.E.
Read More

Heating Large Spaces

For large rooms with high ceilings, get the lowdown on addressing these issues with two different but successful approaches: radiant heat coupled with exhaust fans, and direct-fired pressurization units. Carl C. Schultz, P.E.
Read More

Power Boilers For HVAC Applications

When does the situation call for a power boiler? Long-distance distribution, laundry or kitchen facilities, and absorption chillers requiring hot water service are just three examples where a power boiler may be preferred or even required. Read on for power boiler code info, and take a look at relevant tips pertaining to low NOx technologies, the Clean Air Act, permits, and current controls options. By Carl C. Schultz, P.E.
Read More

Biosafety Ventilation Systems

Biosafety laboratories have four levels, while biological safety cabinets have three classes. Each category carries technical distinctions of literally vital importance in the protection of researchers working with a variety of dangerous substances. Learn about these differences and the appropriate system requirements, along with guidelines for animal facilities, special HEPA considerations, and some real-life system breakdowns. By Carl C. Schultz, P.E.
Read More

Waterside Economizers: A Primer

Airside economizer systems are common and save energy, but they are not the only option. Waterside economizers help reduce chiller operational expenses as well, and they can offer special benefits when a project involves structural or process humidity concerns. By Carl C. Schultz, P.E.
Read More

Mega Motor Loads

The heat of 33,000 motors is not a common design factor. Neither are rooftop sight lines predetermined to preserve air traffic control's view of the runway. Yet, when designing the cooling system for a major shipping company's expansive handling facility, the project team ran into these and other issues. Read on to track how motor load knowledge and a bit of true imagination fueled a successful delivery. By Carl C. Schultz, P.E.
Read More



Image Galleries

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.

Table Of Contents Subscribe

System Design

Based on your experience and knowledge level, are you currently comfortable designing or maintaining a system incorporating VRF or radiant ceiling panels?
View Results Poll Archive


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.

More Products

Clear Seas Research

With access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

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!


new Facebook icon Twitter icon YouTube iconLinkedIn icon  Google+