Skip to main content
Tag

heat transfer

Smart Free Energy

Homely But Smart Free Energy

By Energy Rant No Comments
I introduced exergy to readers 4.5 years ago, had a refresher on it for industrial decarbonization earlier this year, and it is part of our decarbonization training course that is frontrunning AESP's annual conference in Nashville on February 7th. Decarb Course Contest Speaking of the pre-conference event, we're giving away a FREE pass to our decarbonization course to one lucky energy nerd. All you have to do for a chance to win is write a sassy 250-word explanation on WHY you want to attend. Get the details and enter to win here. We're announcing a winner on January 5th. Preserving…
Read More

Dig Some Wind – Blown Away by Inversions

By Energy Rant 2 Comments
As children, some engineers liked to take things apart to see how they worked – and maybe even put them back together. That was too much work for me, but I was curious. I would intently watch my Mom as she accelerated the 1970s Ford Galaxy 500 down the road. What was she doing to make it shift gears? I had to know! Of course, it was an automatic transmission. Today, I see some scientific claims, and I can’t help myself but to dig in and find the big lie, er, the big why. This week’s adventure started two months…
Read More

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:…
Read More

Duct Leakage; The Results Are In

By Energy Efficiency, Energy Rant 5 Comments
About two years ago, I wrote Duct Leakage Chaff, which explained that residential duct leakage is a mole hill, a red herring, a boogeyman.  I recently reviewed a report that nails my assertions from June 2013. The program evaluation (residential HVAC tune-up) was thorough, likely expensive, but worthwhile.  Too often, not just in evaluation, but any professional service industry, contracts go to the low-ball bidder.  The low-ball bidder either uses the tactic because it’s the only weapon they have, they don’t understand the challenge of doing a decent job (ignorance), or providing actionable value simply isn’t that important to them.The…
Read More

Jacque – Fix My Car

By Energy Efficiency, Energy Rant No Comments
There is a running joke in our business that electrical engineers don’t know anything about energy efficiency.  It is only a joke.  One of the sharpest energy guys I have interviewed was a physics major who started on the ground floor of an energy efficiency consulting firm filling orders of equipment they also happened to sell.  In 10 years he worked his way up to really understanding how buildings and their complex systems work and he became a manager of a team of energy engineers teaching his group how buildings work and how to model them. This article made laugh…
Read More