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code compliance

Residential Efficiency, Operations, and Maintenance

By Energy Rant No Comments
Last week, I received an email from the American Council for an Energy-Efficient Economy with the headline, Housing, Energy, and Consumer Groups Applaud Senate Opposition to Raising Energy Prices for Americans. “In a bipartisan vote today, the U.S. Senate rejected an amendment to block a federal proposal that will lower household costs by ensuring more new homes are built to up-to-date energy codes.” In other words, the Senate supports a federal proposal to lower household energy costs. This additional quote hooked me, “Brand-new homes that waste energy saddle their residents with high bills for decades, so up-to-date codes are critical.”…
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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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Is Energy Recovery Always Good? No.

By Energy Rant No Comments
Last week we introduced exergy and at least one application of it in a building. First, let me make something very clear, for the refrigeration cycle, if I’m cooling beer or freezing leftovers, the heat that is sucked out of those masses is rejected somewhere else. For refrigerators and freezers, it is rejected to the room in which they exist. For air conditioning, most commercial refrigeration, and all industrial refrigeration, it is rejected outside – unless, it is captured for useful heating. Commercial HVAC For commercial HVAC, if CONsultants don’t think holistically about the entire heating and cooling needs, and…
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Benchmarking Clowns

By Energy Rant One Comment
It’s Halloween. Hundreds of thousands of people have to figure out a different costume because a clown plague has infected the country. While I don’t consume tabloid news, I did hear that in some cities, the clowns are getting beat up. I thought, now that isn’t a bad idea, but I wouldn’t advise that. When I was a kid, Halloween antics included dozens of mushy tomatoes and cucumbers left behind in the garden. These have the impact of water balloons, and they make a fine mess. For this post, I referenced my program booklet for ACEEE’s 2016 Summer Study on…
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Commercial Code Compliance and New Construction Program Failures

By Energy Rant 3 Comments
Earlier this year, the Energy Information Administration (EIA) released its Commercial Building Energy Consumption Survey of 2012. The prior release was 2003. The data do not paint a pretty picture for energy code effectiveness. Other data we are accumulating indicate new construction programs are failing to deliver. Regress At first glance, it seems substantial progress may have been made between 2003 and 2012. The first chart is from the EIA website. As EIA states, “the only statistically significant changes since 2003 are for office buildings, education buildings, and commercial buildings overall.” That is weak, especially considering that the data cover all…
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Savings Persistence – Funner than a Barrel of Monkeys

By Energy Rant No Comments
Today, let’s consider a subject that is as squishy, subjective, and amorphous as net savings and non-energy benefits (see here and here). Today’s subject is savings persistence. Savings Persistence and Its Importance Even allowing for generous latitude, if I polled readers of this post, I would probably get a dozen definitions of savings persistence. For retro-commissioning, persistence is ensuring the measures aren’t undone. For the broader group of behavior programs, persistence is getting customers and their occupants (family or employees) to continue to value and manage energy over the long term.To the evaluator, savings persistence opens many cans of worms.…
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Energy Codes – Bahahaha, You’re Killing Me

By Energy Rant One Comment
Last week’s post for Strategic Energy Management was milquetoast calm and civil. This post will provide more of what many Rant readers crave: brash provocation, with concrete reality to back it up. Here begins the fantasy of energy code effectiveness and compliance. This topic was spawned as I was assessing ACEEE’s 2015 State Energy Efficiency Scorecard, for The Daily, Michaels’ internal daily news blog. The ACEEE state scores are developed from 50 total points, allocated as follows.My comment was/is that points for code enforcement and level of stringency should be reversed; i.e., there should be four points for enforcement and…
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Code Barriers to Efficiency; Sticking Customers with the Bee Gees

By Energy Efficiency, Energy Rant No Comments
Our industry really needs to call timeout; take a look around and ask, “what the hell are we doing?”  Build it and they will come?  No.  Build it, and they will be alienated and give it the middle digit. As noted most recently in a post on condensing boilers, I have written extensively about energy codes outstripping the reality of human flaws; specifically, complex design and control sequences that require a 10-year industry expert and a licensed professional engineer to even understand the intent of a vast swath of the code. Another perversion of the incomprehensible mumbo jumbo is the…
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Condensing Boilers – Test for Show, Ship for Dough

By Energy Efficiency, Energy Rant 4 Comments
Everyone has probably heard at least one hundred or maybe a thousand light bulb jokes – the ones that disparage a class, gender, group, country, state, generation, etc.  The point is to make fun of the group in question because changing a light bulb is so simple, but it takes several doofuses in the disparaged group to do it.  Unfortunately, changing a light bulb is about the only energy retrofit measure that doesn’t get screwed up, usually.  Is this all we are capable of? In the past couple years, I have posted at least four Rants on energy code non-compliance:…
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HVAC’s Cure for Cancer

By Energy Efficiency, Energy Rant 2 Comments
In January, I wrote about code compliance and that while energy codes keep ratcheting down energy intensity in theory, reality is misery.  That post was a thinly veiled advertisement for my AESP National Conference session in the Lion’s Lair, and that presentation can be seen here.  My Lion’s Lair proposal was a thinly veiled pitch to fix what would be the equivalent of curing cancer for commercial HVAC systems. The cancer is the widely used variable, air volume system.  Another boondoggled application of one such system triggered this post.  The boondoggle was part of an evaluation we are doing on…
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