Paul Ehrlich P.E.

Using Variable Speed Drives In Retrofits

Beginning with whether or not a drive is even needed, the article moves on to help you clear hurdles involved with motor compatibility, existing starters, drive reliability, controls integration, and more.

Paul Ehrlich P.E.

June 8, 2015

For many retrofit projects, the use of a VFD seems like a “no brainer.” Drives are now cheaper and more reliable than ever, and the benefits of efficient control of motors can’t be beat.

Building Automation

Pool And Ice Rink Control

Proper ventilation and dehumidification strategies can maintain a good relationship between the occupants and the water in its various forms.

Paul Ehrlich P.E.

June 8, 2015

Few areas can be as tough to condition as pools and ice rinks. Indoor pools, or natatoriums, need to be able to maintain a space temperature warmer than the water temperature and space humidity between 50% to 60%.

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.

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.

BUILDING AUTOMATION

Lab Hood Control

From temperature to efficiency, the requirements and risks demand a lot of both the system and designer.

Paul Ehrlich P.E.

March 2, 2015

The use of chemical and biological agents often requires a laboratory fume hood for conducting experiments and storage of dangerous materials.

BUILDING AUTOMATION

Enhanced BAS With Data Analytics

The right software solution is worth the decisionmaking effort.

Paul Ehrlich P.E.

February 2, 2015

In theory, a BAS provides all of the hardware and software required to analyze and operate all functions within a building. In reality, though, what most of these systems do best is control the HVAC system.

BUILDING AUTOMATION

Demand-Controlled Ventilation

The right design strategy can lead to safe, more efficient environments.

Paul Ehrlich P.E.

January 1, 2015

One of the challenges we have with commercial buildings is the fine line between providing a safe and healthy indoor environment and maximizing energy efficiency.

BUILDING AUTOMATION

Pressure-Independent Control Valves

PICV technology has its benefits, but is it worth it?

Paul Ehrlich P.E.

December 1, 2014

On several recent projects, we have had control contractors who have promoted the use of pressure-independent control valves (PICV).

BUILDING AUTOMATION

Control Of Critical Environments

In these applications, reliability and accuracy are of primary importance.

Paul Ehrlich P.E.

November 1, 2014

On all projects, the need to provide reliability, accuracy, and safety need to be carefully considered as part of the overall design, but when we start looking at critical environments, these requirements become paramount in the design process.

BUILDING AUTOMATION