We can find the following three types of Parabolic Dish Solar Heaters:
1) Its mirror and receiver move together
2) The mirror is moving, but the receiver is motionless
3) The receiver is moving, but the mirror is motionless
The 1st type is widely known. The 2nd type is used very rarely and is only known to a small number of experts. The 3rd type is unknown, and this video explores it, but my more detailed video of its experimental and theoretical research is:    • A new type of mirror solar heaters (M...  

We can find 3 types of similar solar heaters, and now I am showing the 1st type. This concave mirror focuses solar radiation into this receiver similar to how this little mirror lights a cigarette, but our large mirrors will turn solar energy into heat and electricity. However we know that the sun is constantly moving across the sky, and therefore our mirror must be constantly turning.

This type is widely known, and we may have seen this 1st type many times, unlike this 2nd type, which is known only to a small number of experts. This mirror focuses solar radiation in this way on this receiver which is motionless, but the mirror moves according to the movement of the sun across the sky. At the same time, we now see that the mirror of the 1st type must move together with its receiver.

Of course, our brains can come to the conclusion that there is also a 3rd type where this mirror is motionless, but this receiver is moving. So, the 3rd type should be similar to this experiment of mine.

It is incredible, but this 3rd type is unknown to mankind. Nobody has tried to research this type, although it can provide very cheap heat, steam and electricity, because absolutely motionless mirrors are many times simpler and cheaper than such complex structures of solar heaters of the 1st or 2nd type.

I remind you that such solar heaters can convert solar energy into heating some liquid or air with a temperature of several hundred degrees. Then this thermal energy is used to generate steam for a turbine or comes into similar heat storage to generate steam and electricity at night.

Our unknown 3rd type began to be investigated by me a few months ago on the example of this very cheap mirror which creates this spot of focused solar radiation.

Let's look at how this spot moves from morning to evening due to the movement of the sun across the sky. Now it is morning, and we pay attention to this screen, and here we see that spot of radiation from my mirror, and time points of one day on the 4th of December are shown here. We see that my mirror is absolutely motionless, but the screen must move, and now I will show the same, but more slowly. At the same time we see that this spot is always inside the screen which imitates our receiver where the spot should heat some kind of heat transfer medium to a temperature of several hundred degrees.

My 3rd YouTube channel has a video where my research on this type of solar heater is described in more detail. The link to that more detailed video is    • A new type of mirror solar heaters (M...  , and it describes not only similar experiments in other months, but also other information and ideas on the topic of my research on the 3rd type of solar heaters.

My research comes to the following main conclusions on this 3rd type with motionless mirrors in comparison with this 1st type with turning mirrors.

1 sq.m of mirror of the 1st type produces more heat than 1 sq.m of our 3rd type. Comparison of their heat production is described in that more detailed video, and usually the 1st type produces about 2 times more.

But on the other hand, our 3rd type can be several times cheaper, and our 3rd type becomes economically viable if its square meter is at least 2 or 3 times cheaper than a square meter of mirror of the 1st type.

In addition, we come to the conclusion that the 3rd type requires a super-cheap kind of mirrors, and now I am testing several kinds of super-cheap mirrors. For example, it can be primitive concave mirrors made of cheap reflective film, or it can be such a mirror balloon. In addition, I constantly test similar mirrors based on expanded polystyrene, and recently I started testing different kinds of mirrors based on cheap and long-lasting concrete.

On the other hand, if you want to use some beautiful and expensive mirror, I recommend you to forgo our 3rd type solar heater and use 1st or 2nd type.

So, I repeat that the link to my more detailed video about my experimental and theoretical research of the 3rd type is    • A new type of mirror solar heaters (M...