This video is about one of relatives of Parabolic Trough: its receiver is separated from its solar concentrator, its rows are located along the East-West line.
This solar collector is usually called the term "receiver", and it produces heat from solar radiation which comes from these mirrors which are commonly called the term "solar concentrator". Now I am showing one of my experiments, and this is my solar concentrator with mirrors which have the shape of a parabola or circle, and this is solar spot of those mirrors on a white screen which is used by me to study properties of the system. Obviously, we need to install our receiver here.
Now I am showing my solar station, and it consists of relatives of that system, and we see solar concentrators with parabolic mirrors, and this is the receiver which is fixed to the concentrators. However now the receiver is not fixed on the solar concentrator, and this technical solution gives us some advantages which will be described in this video. Certainly, this is only a prototype which consists of one concentrator section and one receiver section, and this new system should have many such sections, similar to my old system where we see 9 sections which form a long row.
This is another relative of our systems, and this solar technology is called the term “Parabolic Trough”. Now I am showing the most famous solar station of this technology, and this is its satellite photo where we see that its rows are located along the North-South line, and therefore its solar concentrators must be constantly turning, and now I am showing their turning during one day. At the same time, my systems have another location, and now I will show an old satellite photo of this first row of my solar station, and we see that my row is located along the East-West line, and therefore my systems do not need that complex and expensive equipment for turning the solar concentrators during a day.
Now I will show the movement of this solar spot during a day while my solar concentrator does not move, and it is morning, and the spot is here, and we will see that the spot hits the middle of my white screen during the day, but I remind you that the system must be located exactly along the East-West line, and the allowed direction error is several degrees. However it was a day near the autumnal equinox, but the spot will already hit the screen inaccurately near the summer or winter solstices. That is why I look forward to December to make a new video about the movement of the spot near the winter solstice, about increasing the height of the spot, about the influence of this shadow and influence of snowfall.
My solar concentrator will have this position in December when the sun is low on the horizon, but this is its position for the high sun in June. So, we must change the position of our concentrator during a year according to the midday height of the sun above the horizon, and now we see how I do this action at my solar station. Unfortunately, this action is a problem for the case of my old system due to several causes, however these causes are eliminated by my new system where the receiver is separated from the solar concentrator.
For example, I have to do this action about once a week for the case of my old system, but the new system will require this action only once a few weeks if the height of our receiver is 40 or 60 centimeters. In addition, now this is hard work, especially if the concentrators have heavy glass mirrors, but my new system does not require a lot of strength to change the vertical angle of the concentrators, and therefore I can recommend such glass mirrors for use in the new system with a separated receiver. I remind you that making of the glass mirrors was described by one of my old videos, and their making does not require any sophisticated equipment, and their cost can be very low if we use such mirror strips which are garbage from glass workshops.
Now this prototype uses another type of mirror based on a reflective polymer film, but making this type of mirror requires such equipment.