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relative humidity

Relative Humidity, by Socks and Jeans

By Energy Efficiency, Energy Rant, Sustainability No Comments
It is mid-June, and strangely here in the northern Midwest we have experienced virtually no warm, humid weather yet this year.  The weather can flip like a switch from a pattern of rain and clouds of the past several weeks to one that is hot and humid with little precipitation.  Now is a good time to talk about relative humidity and moisture. Relative humidity is something everyone knows about but hardly anyone understands.  How many times have you heard “It was 100 degrees with 99 percent humidity?”  I guarantee these conditions are 100% impossible, at least in the ambient outdoors,…
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Love Thy Backup Punter, Or Pay Dearly – The Unloved Exhaust Fan

By Energy Efficiency, Energy Rant No Comments
Everyone reading this blog is at least a stage 1 energy geek.  A stage 1 energy geek will notice the type of light bulbs used in their hotel room and complain that the place isn’t green enough.  A stage 2 would file a complaint if the cleaning crew takes the used bath towel that is clearly hung up to dry for the next shower.  A stage 3 will appreciate the guest room occupancy-sensing thermostat.  A stage 4 will browse the web for hotels with satisfactorily green features, before booking.  A stage 5 will actually bring their own artisanal bar of…
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Summertime Energy Use and Your Abode

By Energy Efficiency, Energy Rant One Comment
Now that winter, followed by a couple months of flooding rains have passed, at least for a few days, summer is here, and this brings about some energy saving tips, rumors, bologna, and truths about summertime energy use around the house.First, allow me to destroy the inappropriate and overused term “humidity”.  When someone complains about 90% humidity, it would be entirely wrong in most instances.  For demonstration, see the chart nearby.  Each curve represents relative humidity (RH) over a 24 hour period. Which represented day is more comfortable from a RH perspective?  The correct answer - I can’t tell because…
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Energy Star Black Eye

By Energy Efficiency, Energy Rant, Government, Sustainability No Comments
For years, beginning in the 1990s through just a few years ago I considered ENERGY STAR® to be fluffy foo foo feel good goo – kind of like eating meringue smothered in corn syrup after chopping wood all day. Then they introduced the ENERGY STAR rated homes and ENERGY STAR rated commercial buildings.  Both of these seem to be solid “programs”.  ENERGY STAR for commercial buildings is based on energy intensity, which is energy consumption per square foot, climate region, type of facility and a few other things.  To “earn the ENERGY STAR” commercial buildings must be in the 75th…
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