Re: Solar Gain Tests
I would not compare Solar energy to a tea light. Actually I suspect that not only woudl the honey serve as a far better source for the heat to be transferred to. But I also suspect it will hold onto that heat for much longer. This test is measuring air. Keep in mind air is a poor conductor of heat and gives it up readily. I would be interested in the same sort of measurements but with the probe on frames of honey. It might lend some understanding of why bees tend to not only have honey on their outside frames. but practically wrap themselves in it.
Originally Posted by bluegrass
The air temperature that is being measured will only remain stable or even rise a bit due to a constant and fairly strong source feeding it. as soon as that source is gone the air will cool rapidly.
For example, you car setting in the sun with the windows up. It gets hot inside. The seat is to hot to set on the steering wheel to hot to touch. but as soon as you open the door what is the first thing that cools off? You can actually feel the air cool. This is partially due to the air can move and be replaced with cooler air. this is true. but a lot of that cooling is due to the airs ability to release heat.
How do we know that air releasing heat is part of why the air cools so fast? Think about it. not everything can give up heat as fast as air can. the steering wheel cannot. the dash cannot the seat cannot. If the air could only give up heat at the same rate those other objects could. the air would remain as hot as they are. In fact they are all pumping heat out attempting to do just that. but they cannot keep up with airs rate of heat loss. We quickly learn that if we move more air across those hot objects that they cool even faster. Roll down the windows and drive.
Truth is air serves best as a means to carry heat away. it cannot serve both as a coolant and a heat storage. For this reason measure air for a reading of warmth is not the best choice.
Everything gets darker, as it goes to where there is less light. Darrel Tank (5PM drawing instructor)