Thomas Anderson

Recent Posts

Why Design Review Is Crucial

Posted by Thomas Anderson on Aug 29, 2018 10:00:00 AM

We often hear a question that goes something like this from building owners: “Why do I need an independent design review? I hire the best architects and engineers.” It’s a reasonable question — asked so often in my opinion because those of us in the architecture, engineering and construction industries have done such a poor job answering.

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Topics: Building Cx & Design Review, Standards and Metrics

Fundamentals of Energy Efficient HVAC Pumping

Posted by Thomas Anderson on Feb 13, 2013 5:00:00 AM

The building commissioning design review process provides opportunities to see how HVAC designers apply efficiency to pumping systems. There are outstanding designs and, unfortunately, some not so excellent applications.

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Topics: Building Performance & Technology

Testing Differential Pressure Reset For Fun and Profit

Posted by Thomas Anderson on Dec 26, 2012 5:00:00 AM

Fun and profit can come in unexpected ways to energy efficiency engineers. A couple of months ago while at a jobsite conducting central air handler control testing, there was the inevitable wait-around time. So I stopped to take a look at a central heating hot water plant we commissioned a couple of years ago. It’s a basic system - an all-primary layout with two boilers and variable flow 7.5 horsepower pumps, controlled by a piping differential pressure (DP) control sensor located in a remote section of the distribution piping. The plant serves a few dozen single duct VAV box reheat coils. A pretty typical system.

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Topics: Energy Efficiency, Building Performance & Technology

Testing and Unbalancing Variable Air Flow System Performance

Posted by Thomas Anderson on Dec 5, 2012 5:00:00 AM

A recent Test and Balance (T&B) report for a central air handler made me really question the value of some of our current T&B practices. The system was a conventional variable air volume (VAV) air handler with a return air fan and single duct reheat terminal VAV boxes. The purpose of the T&B process is to adjust and record air handler performance to achieve the specified maximum flow rates.

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Topics: Energy Efficiency, Building Performance & Technology

Building Performance Metrics: Why Building Energy Use Feedback Is Essential

Posted by Thomas Anderson on May 2, 2012 6:00:00 AM

As an industry, we provide building operators with efficient heating, ventilation and air conditioning (HVAC) systems as well as powerful building management control systems. Then we expect the operators to run the high-tech HVAC equipment efficiently.

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Topics: Standards and Metrics, Building Performance & Technology

How to Present Your Commissioning Design Review Comments Convincingly

Posted by Thomas Anderson on Jan 18, 2012 5:00:00 AM

One of the biggest challenges in conducting a building commissioning design review is to get the designer to seriously consider a design review suggestion. Designers will naturally be defensive, as would any of us. Having been an HVAC designer myself, I know one of the designer’s biggest fears is seeing comments that make the designer “look bad” to the client (building owner).

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Topics: Building Performance & Technology

Why You Need a Design Review

Posted by Thomas Anderson on Dec 21, 2011 5:00:00 AM

We often hear a question that goes something like this from building owners: “Why do I need an independent design review? I hire the best architects and engineers.” It’s a reasonable question — asked so often in my opinion because those of us in the architecture, engineering and construction industries have done such a poor job answering.

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Topics: Standards and Metrics

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