Commercial HVAC - Articles - Page 223

No Owner's Project Requirements

Why would an OPR be left out of the equation? And how does the commissioning team move forward?

Rebecca T. Ellis, P.E.

October 4, 2017

The Owner’s Project Requirements document (OPR) is a commissioning industry standard.

Case In Point

VRF Breathes New Life Into Skyscraper

September 14, 2017

According to the U.S. Census Bureau, Detroit lost 60% of its population from 1950 to 2010. However, in the last two years, something has shifted.

Case In Point

Office Building Optimizes Tenant Comfort With Energy Management Platform

September 12, 2017

Southwest of Capitol Hill, and within an easy walk to the Jefferson Memorial, is a new seven-building, mixed-use urban center called Waterfront Station, located on 1100 and 1101 4th Street SW.

Evaluating A Fan's 'Efficiency Impact' From A Collective Perspective

Use an unorthodox comparison to take a fresh look at the savings that could be hiding out in all those air handlers.

David N. Schurk

September 10, 2017

Chillers have always been a popular choice to air condition large commercial buildings that are, by their nature, energy intensive.

Advanced DOAS Technologies & Features

Energy recovery, sensors, and smart deployment of other options can let a system clear the psychrometric hurdle of designing for high outdoor air requirement and high moisture levels.

Douglas Horton, MS, MBA, CFSP Thomas H. Kuehn, Ph.D Mike Porto

September 9, 2017

Dedicated outdoor air systems (DOAS) have been available for over 20 years, with the primary benefit being the ability to decouple outdoor air tempering from conditioned space thermal loads that can be handled by separate, secondary systems.

Why Write Your Own Sequence Of Operation

When something fails, circumstances (and fingers) often point to the designer — unless you can prove your work.

Howard McKew, P.E., C.P.E.

September 8, 2017

Continuing on from last month’s discussion encouraging design engineers to create their own automatic temperature control (ATC) system flow diagram and write their own sequence of operation, let me start with the importance of this responsibility.

Retrofits: Opportunities & Challenges

There’s more room for mystery and surprise in the early phases, but retrofit projects still contain a unique advantage or two for the thoughtful engineer and owner.

Steven G Liescheidt P.E., CCS,

September 7, 2017

Retrofit projects are opportunities to renew the life of a building and the utilities within that building.

Retrofitting A BAS: The Devil's In The Details

Replacing it all isn’t always needed or in the budget. Apply some guidelines to evaluating these field devices.

Ira Goldschmidt P.E.

September 6, 2017

Older BAS are typically replaced when BAS controllers and/or operator interface (the “brains”) are at the end of their useful life.

Training For Engaged Contractors

Provide meaningful O&M commissioning training by following these guidelines.

Rebecca T. Ellis, P.E.

September 5, 2017

Over the past two months, this column has focused on the building owner’s role in obtaining meaningful and timely training on new equipment and systems installed as part of major capital projects. O&M training is one of the most challenging parts of the commissioning process to do well.