First real tests of my solar heater

Now it's time to make some real tests, let's check what that crazy solar heater can do...

First test::partially cloudy weather

• measured air temperature at the top of the solar heater is about 23 °C (73.4 °F)

Second test::some more sun, but not the "clear blue sky"

• measured air temperature at the top of the solar heater is about 32 °C (89.6 °F)
  

Third test::almost clear blue sky :-)

• measured air temperature at the top of the solar heater is about 41.5 °C (106.7 °F), temperature outside - about 10 °C (50 °F)