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control systems

Specious Beliefs in Code Gods

By Energy Rant No Comments
I received a lot of feedback on last week’s Code Compliance Villains, which described blunders that occurred as part of my high-efficiency boiler installation. Such mistakes would likely erode 50% of the estimated savings claimed in a deemed savings document. Efficiency issues included: Improper outdoor temperature sensor location giving false inputs to the controls. High boiler water temperature setpoints resulting in lower operating efficiency. Heat exchanger piped in parallel, rather than counterflow, resulting in higher boiler water temperatures and less efficiency. The problem with efficient equipment and energy codes is that equipment is tested in the lab, and hands are…
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Gozer the Disruptor: Replace or Be Replaced

By Energy Rant One Comment
This Rant post is propelled by AESP goers. Several colleagues and I attended AESP’s summer conference for technology in Toronto last week. We landed numerous positive comments about this blog; some from people I don’t know or never met. I greatly appreciate these comments. They keep me fueled to keep pumping these out. These comments, along with the opening plenary, Embracing Disruptive Innovation, and my participation on AESP’s Board of Directors, pour the foundation for this post. But first, the antitrust clause: the following nutty views reflect those of the author only, and not those of AESP, Michaels Energy, or…
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Automated M&V – In Your Dreams

By Energy Rant No Comments
Last week, we explored the state of EM&V 2.0 and its considerable, to say the least, constraints. This week, we look more intensely at fallacious “automated M&V”. Automated M&V is an oversold and over-hyped concept. When something is automated, it takes inputs (data) from various sources, often hundreds of sources, with high frequency, maybe by the second or on a Hertz (many times per second) scale. Then the brains of the automated doohickey compute and translate the data into solutions or outcomes. For buildings of all types, from single family homes to large commercial and industrial facilities, automated systems are…
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Experience Myth

By Energy Efficiency No Comments
Now that I’m an old man, defined as being over 40 years of age, career half over, graduated from college 20 years ago, kids of classmates are graduating from high school, kids born when I was partying in college are graduating from college, and other depressing facts, I can say experience in anything can be almost worthless and in some cases, it is worth less than nothing. At Michaels, we have interfaced with engineers, particularly ones who were in sales and it was stunning how little they knew about buildings, control systems and how equipment and systems use energy.  It…
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Fortune 100 Energy Efficiency

By Energy Rant No Comments
One of the downsides of the surging awareness and growth in energy efficiency and renewable energy, in my opinion, are all the Johnny Come Lately energy services arms of giant corporations.  Companies include Lockheed Martin, United Technologies, Eaton, and Chevron.  These giants have revenues of $45 Billion, $53 Billion, $12 Billion and a meager $176 Billion, respectively.  Poor Chevron’s revenue dropped from $275 Billion from the year prior.  Maybe they should focus on their core business and leave the energy saving to the rest of us.  Among these, only measly Eaton isn’t in the Fortune 100 (Eaton comes in at…
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