Articles by Paul Ehrlich, P.E.
Updated codes continue the push for better controls work as high performance edges further into the mainstream.
March 1, 2014
At one time, it might have been acceptable to view controls as a “necessary evil” with little attention given to the details of design including sequences and commissioningRead More
How many health care facilities are limping along in terms of mechanical performance but could be running better than ever with one committed round of treatment?
March 1, 2014
Our BAS columnist makes a house call to prescribe one method of applying retrofit expertise, including the success story of a hospital with mysteries or maladies that required attention in VAV and chillers, air handling strategies, OR ventilation, and beyond.Read More
While chilled water plants can range in complexity, the fundamentals are the same.
February 1, 2014
Chilled water plants tend to be one of the most energy intensive areas of a commercial building.Read More
Follow these three steps when it comes time to upgrade critical life safety manage-ment.
January 2, 2014
Following a tragic fire in a Las Vegas hotel in the 1980’s, the industry recognized the dangers to occupants from smoke inhalation during a fire emergency.Read More
Energy savings isn’t the only factor when considering a controls retrofit.
December 1, 2013
Much of our work involves energy studies and retrofits to commercial buildings.Read More
When it comes to the Smart Grid, are you prepared? Consider two design strategies to connect buildings to the available benefits.
November 1, 2013
You’ve heard a lot of talk about the deployment of the Smart Grid. Most of the initial smart grid deployments are focused on the de-ployment of smart meters that enable utilities to gather usage information in near real time — or what they call Automated Meter Infrastructure (AMI).Read More
Is it time for an update or a full replacement? Here are some factors to think about when evaluating mechanical systems.
September 23, 2013
Often when we are evaluating or assessing an existing building, we are on the lookout for equipment and systems that are in poor condition or approaching the end of life.Read More
These units can save energy, but only if the technology is installed and operated correctly.
August 29, 2013
The application of energy recovery units allows for the ability to do total heat recovery and recover both sensible and latent heat from an exhaust air stream, using that heat to pre-condition outdoor air required for building ventilation.Read More
As always, the challenge is not a shortage of data but managing it smartly. However, the technologies and tools are evolving to meet the task.
August 2, 2013
Recently there has been a lot in the press about “big data.”Read More
Who is in your building? How long are they there? Obtaining this information has its benefits.
July 1, 2013
There are many potential benefits to knowing not only how many people are in a building, but ideally where they are locatedRead More