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Yurt Temperature Fluctuations

 

First of all, this is not a gripe, these are just observations...

 

When I first began to live in a yurt, I noticed that after the fire went out in the evening, it didn't take long for the inside temperature to equalize with the outside temperature.  This made for some chilly mornings!

 

Then, sometimes late in the morning, it would be warmer outside than it was inside.  After I had been gone all day, especially when it was sunny, it would be deadly hot inside, often more than 100 F.

 

This prompted me to conduct the following test.

 

Please read the conditions of this test before you look at the data.

 

1. My yurt is in a field.  There is no shade during the day so solar gain is high.  There is no cover at night, so radiant heat loss to the sky is also great.

 

2. I live in western Washington, west of Olympia out towards Aberdeen.  The climate is temperate to cool and very cloudy, often very wet.

 

3. I do not have the factory insulation (bubble wrap with one side of Mylar and one side of fabric).  I do have the entire roof and wall space insulated with 3 1/2" of vinyl backed fiberglass.  I don't know how much the factory insulation would help, but my mother also lives in the yurt.  She has two layers of factory insulation in the roof.  She still notices a great amount of fluctuation between the day and night.

 

4. I used two temperature loggers.  One was inside and out of direct sunlight.  The other was outside but constantly in the shade.  I didn't occupy the yurt at the time, so it was a closed uninterrupted space the whole time (no one ventilating it at any time).

 

5. The blue line is the inside temperature.  The red line is the outside temperature.

 

Notice the last days in June when the outside temperature really began to get warm and the sun was highest in the sky.  The temperature logger inside topped out at 100!

 

Conclusions:

1. It isn't uncommon on sunny days for the yurt, even in April, to get about 20-30 degrees above the outside temperature.

2. And from about 04:30 in the morning to about 10:00 am, it is often the same temperature inside as it is outside.

3. Build your yurt under a tree.  Use both factory insulation and vinyl-backed fiberglass.

 

Email me: stefanlofgren@yahoo.com     Hit Counter