Commercial HVAC - Articles - Page 241

Editors Note

Royal Treatment & Related Links

Also, read about deficient boiler rooms to avoid danger in your own.

May 7, 2015

We got some great news just before shipping this issue to the printer. Stephanie Taylor, MD, who is writing a year-long IAQ column for us, has been invited to be a Fellow in the Royal Society for Public Health.

Building Automation

Building Automation For Small Commercial Buildings

Options and price points are converging to better serve a big slice of the commercial energy pie.

Paul Ehrlich P.E.

May 1, 2015

Generally, when we think about BAS or system integration projects, they are for larger projects such as schools, office buildings, and hospitals that are 50,000 sq ft or larger.

CASE IN POINT

HVAC supplier warms to its own retrofit

April 1, 2015

Langendorf Supply Co., a distributor and supplier of HVAC equipment throughout the Midwest, decided it was time to investigate how to make its own space more energy-efficient.

BUILDING AUTOMATION

Control System Retrofits

Upgrade or replace? Consider these points when it’s time to decide.

Paul Ehrlich P.E.

April 1, 2015

On average, Americans keep their smartphones for two years before trading up to the latest model.

COMMISSIONING

Post-Construction Design Team Change

What does (and doesn’t) get scrapped in this uncommon changing of the guard?

Rebecca T. Ellis, P.E.

April 1, 2015

This month, I am continuing my recent exploration of situations where building systems do not pass their commissioning functional performance tests at the end of construction.

TOMORROW’S ENVIRONMENT

The Good News And Bad News Of Status Quo

Industry change reveals not just different talents but varying levels of ambition, too.

April 1, 2015

Over time, many if not all employees eventually become comfortable in their work environment. I don’t think this can be helped, be-cause with routine comes contentment.

The Skinny On Reactors For VFDs

You’ve got options for avoiding trouble caused by harmonic distortion.

Shane King Ruben Ortiz

March 31, 2015

Reactors for AC drives are available as either AC reactors or DC reactors (DC link chokes). Both serve the same main purpose: to smooth the current flow to the AC drive, and reduce damaging harmonics produced on the power line.

High-Rise Overhaul

Dave Callan

March 4, 2015

125 South Wacker, a 31-story Chicago high-rise that is halfway through a five-year master plan, represents a massive undertaking both in volume and scope of equip-ment.

COMMISSIONING

Sometimes Non-Compliant Is Okay

Different isn’t necessarily wrong if all parties agree (and with appropriate follow-up).

Rebecca T. Ellis, P.E.

March 2, 2015

Last month’s column (February 2015) addressed the potential situation where the design engineers specify a change to a system which has already passed its commissioning functional performance test.