Very cheap ( $15-30 ) solar collector-concentrator that does not need a tracker

Very cheap ( $15-30 ) solar collector-concentrator that does not need a tracker


This solar heater is about 10 times cheaper
than these traditional solar collectors, and it is several dozen times cheaper than these
its relatives. These expensive concentrators should constantly
turn their mirrors, and now I am starting to show how they do it during a day, and the
time is shown here. We know that these expensive solar concentrators
are the basis of large solar power plants, and now the value of all these plants is approximately
40 billion dollars. For example, the construction cost of this
plant is 2 billion dollars, and this is its satellite photo. We can see that the rows of its concentrators
are located along the North-South line, and these photos of other plants say that they
also have a similar North-South location. But now I will show a satellite photo of this
solar station, and we see that the rows of my solar heaters are located along the West-East
line, and this is their main difference from those expensive solar concentrators. This location along the West-East line allows
the rejection of those mirror turns from morning to evening, and now I will show photos of
one day, but at different points in time which is shown here. We see that this spot of solar radiation from
my mirrors accurately hits the absorber during the all day. Here we can see that the mirrors were immobile,
and these shadows show us that the sun is moving. But this day was near the spring solar equinox,
and the spot will just as accurately hit the absorber also near autumnal equinox, in September. However the closer to the solstices, the spot
hits the absorber less accurately, and now we see the movement of the spot near the summer
solstice, in June. Now I will show how the spot moves near the
winter solstice, in December. Interestingly, in winter the spot comes from
above, and in summer it came from below. And the spot goes up in winter, but in summer
it went down. We can see that our cheap solar heater has
a high absorber. At the same time, this expensive solar concentrator
has a thin absorber, and this concentrator is expensive due to the fact that it should
be very precise because its spot must be a very thin line. But our equipment should not be precise, and
therefore it has the right to be manufactured from cheap raw materials using primitive technologies
which do not require large investments. So, our solar heater does not have a mechanism
for the constant turning of its mirrors, but we must do this operation This is a change in vertical inclination of
the mirrors, and we see that it is a simple and quick operation. I have to do this about once a week, but we
understand that this operation can be done several times less frequently if the height
of this absorber is greater I am researching not only this solar technology,
but also its relatives, and this is one of them. We see that this receiver is fixed on the
ground, and this technical solution gives us several advantages compared to this fixation
of this receiver to the mirrors. This is another example, where this receiver
takes solar radiation not only from the mirrors, but also directly from the sun. In addition, I am researching several more
relatives of this large family of solar heaters which should be located along the West-East
line. That is why they do not require turning their
mirrors from morning to evening, and I will describe these relatives in my future videos. So, the topic of this video is only this system
where the receiver is fixed on the mirrors, and I suggest we think about where this system
can be used. We know that these expensive solar concentrators
heat special oil up to 400 ºC, and this heat is used to generate steam which rotates a
turbine and electric generator. But some part of the heat goes into these
heat storages, and it is used to generate electricity in the evening and at night. Obviously, this is a big advantage over the
well-known solar panels which produce electricity only during sunny hours. Unfortunately, this solar heater of my solar
station is not intended to heat more than 100 ºC. But I think that these changes in its design
can give us a solar heater which is capable of producing heat at a temperature of 150-200
ºC with high efficiency. However most likely, those other relatives
of this solar heater can provide cheaper electricity, especially if they are able to produce heat
with a temperature of more than 200 ºC. However this type of solar heaters may be
of interest to replace similar solar collectors which produce heat for industrial processes
of food, textile and other types of factories and plants. In addition, perhaps someday our type of solar
heaters will replace these solar collectors which provide heat for district heating of
towns and cities. Or perhaps it will replace these solar concentrators
which simultaneously produce electricity and heat for district heating. However I think that several years of my search
will find other types of solar heaters which will provide cheaper heat for district heating
than this. My goal is the cost of solar heat 1 cent / kWh,
and it is several times cheaper than heat from natural gas or other traditional energy
sources. In addition, sometime I plan to experimentally
test this version of our solar heater which consists of several solar heaters on this
single frame. I hope this version can be interesting for
some types of solar space heating of a single family house.

3 thoughts on “Very cheap ( $15-30 ) solar collector-concentrator that does not need a tracker

  1. What about putting PV for the front face of the absorber? If I remember, PV output scales linearly with intensity for several times normal solar intensity. In this situation, the thermal loop acts as a PV temp regulator, also drawing in the Joules for storage and for feeding a high temperature loop like this one (increasing the resulting flow rate for the boiler). Such system would generate electricity for pumping and support logistics.

    Excellent work and presentation, my friend. I had a similar idea decades ago, but life got in my way.

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