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hello to all deer in clean energy
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enthusiasts
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welcome to fixed Focus program hope you
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all are doing well wherever you are
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today I want to start building a larger
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solar dish for the fixed Focus system
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although this solar dish is small we did
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various tests on it
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the surface of this solar dish is less
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than one square meter and we will change
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this dish in future plans
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and for this we need to make changes to
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the system
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if we choose a bigger solar dish the
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tests can be done better and easier
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so in this program we want to start
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making a square dish
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circular dishes do not have corners and
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this park has been removed
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so we want to have a square dish to use
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the maximum system surface and not waste
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energy
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in the fixed Focus system the path of
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the solar dish can accommodate a square
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dish in this figure you can see that the
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energy concentrated in a square dish is
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approximately 1.27 times the equivalent
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circular dish of course not every type
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of dish can be mounted on this system
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and it must have its own specifications
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for example it should have a Groove for
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the focus base and edges as a central
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support
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of course we should make a dish that can
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work for us for at least 15 years
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however this work is a difficult task
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especially in Winter and in this cold
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and rainy weather and if you want to do
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this work you must not forget to be
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careful in your work in addition we can
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also use solar flat dishes and it is
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relatively easier to make but the main
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problem of flat dishes is that it is not
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possible to wash its surface easily and
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I plan to make a solar dish with a
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surface of 1.6 by 1.6 meters in which
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case its area will be 2.56 square meters
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of course I made the design for a three
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meter dish the length of one side of
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which is 1.8 meters but due to the need
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for many system changes I reduced its
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length to 1.6 meter in this figure we
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have a dish with a side of 1.8 meters
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which is a part of a sphere with a
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diameter of 4 meters
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this figure shows the central
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cross-section of the sphere shown as a
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circle
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if you look carefully at the figure you
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will notice the calculation and Design
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making this type of dish is not an easy
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task because it requires both precision
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and patience
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those who want to prepare a solar dish
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with this method should watch this video
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carefully
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so first we have to find a suitable
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environment for this work
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are you ready to go to start a tough
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work
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well now I have prepared an environment
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for making the solar dish mold
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the width and length of this space is
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almost suitable and if it is bigger it
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is much better
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[Music]
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I put a plastic under the work so that
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it can be collected easily if the
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plaster spills
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[Music]
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to shape the mold of the dish I already
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prepared a tube with the required length
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[Music]
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this metal tube is bent with radius of
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two meters so the focus distance of our
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dish will be one meter
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[Music]
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the distance from this part of the pipe
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to the other end is 2.30 meters
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[Music]
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so we can start working with this metal
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pipe
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[Music]
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first I put on work gloves
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[Music]
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I made an iron base as you can see
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I have placed two bearings in this part
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one is here and one is here
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[Music]
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of course you can weld the threaded rod
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in the center of the tube instead of the
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bearing
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now I place this stand in the center of
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the work environment
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two washers
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and now I put the tube that is pierced
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in the middle on the screw rod
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[Music]
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you can see that the rotation of this
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tube draws a part of a sphere
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sure
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[Music]
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we have to fill the entire part under
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the tube to prepare the mold and the
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volume will be really large
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[Music]
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if we want to use plaster we need a lot
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of plaster
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[Music]
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the first method is to use Foams
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available in the market
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[Music]
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we can cut Foams layer by layer and fill
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the volume
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[Music]
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but the second method is that if you
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have access to a suitable Hill you can
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insert the rod at the top of the hill
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and into it or prepare an artificial
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Hill
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but maybe someone does not have these
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facilities and wants to have a permanent
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format
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figure for understanding
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[Music]
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so we go to the third method and use
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riblath sheet
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[Music]
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it is a rib lath sheet which is both
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cheap and Light
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in fact I want to leave the space under
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the pipe empty
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[Music]
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for this I use a metal ring with a
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proportional radius that is welded to
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the tripod
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the main base should be placed in the
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center of this ring and I will try to
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place the ring in the right place with
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the meter
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[Music]
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it should be noted that most of the
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weight of the mold is on this metal
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Circle and its bases
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[Music]
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therefore it must have adequate strength
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to place the rib lath sheets I made a
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series of metal wires that I welded to
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the center of an iron sheet and put the
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hole in the center on the base these
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wires which are eight in number provide
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a support for placing rib lath sheet
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[Music]
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I fasten the metal plate with a metal
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nut so that it does not move
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foreign
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[Music]
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sheets on it in proper order
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[Music]
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we tie the rib lath sheets to the ring
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with a metal wire
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foreign
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[Music]
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on the rib lath sheets
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but we cannot put the plaster directly
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on the rib lath sheets because it will
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cause the plaster to fall out of its
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holes foreign
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of course it is possible in places where
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several layers of rib lath sheet are on
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top of each other
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[Music]
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this is the first time I want to put
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plaster on riblath sheet
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I saw a method in a movie related to
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suspended ceilings partition that was
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interesting and we will implement it
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first I will put this piece of foam here
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[Music]
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I have prepared some pieces of plastic
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sack and put one of them on the foam now
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I prepare the plaster and put a thin
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layer of plaster on the plastic sack and
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put it slowly on the riblath sheet after
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the plaster dries the plastic sack is
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easily removed I will do one of them and
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see if it can be done
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we put a thin layer of plaster on the
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sack
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[Music]
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it is better if it is watery plaster
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that I need some more
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[Music]
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Construction
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and in this way we place it on the rib
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lat sheet and let the plaster Harden
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[Music]
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thank you
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foreign
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[Music]
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to the original place and continue the
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work
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[Music]
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foreign
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[Music]
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foreign
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[Music]
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foreign
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[Music]
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[Music]
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foreign
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[Music]
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well almost the plaster coating is done
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and now we can do the main plastering
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let's use the bent pipe and do the
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plastering
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let me tell you one thing and that is
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that the plaster we used for the metal
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mesh is a type that hardens very quickly
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and the plaster that we use later is of
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a type that hardens slowly
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[Music]
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of course for the speed of work you can
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also use plaster in both cases which
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hardens very quickly but you must work
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faster
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[Music]
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well let's go to the next step
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before using the bent pipe I want to
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Mark the dimensions of my work with this
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bent iron angle
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I put it on the work and on two sides
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and Mark it with spray paint to
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determine the area of plastering
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[Music]
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well I welded an iron cylinder to a
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washer and with this I want to create a
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support for a better placement of the
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bent pipe
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also this will prevent the plaster from
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hitting the center of the rotation
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[Music]
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so that the plaster does not stick to
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the pipe I have greased the pipe with
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grease
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[Music]
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for easy movement of the iron tube I
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made a hole in one side of it and by
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tying a wire of suitable length you can
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move it easily
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questions
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well let's go to Casting plaster
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try not to make the plaster thick rather
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the plaster should be properly diluted
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so that it can be easily shaped
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in this way that I prepare
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[Music]
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foreign
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[Music]
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be sure to start pouring the plaster
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from the top because it makes the metal
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pipe have a proper support for movement
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let's go to continue working
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[Music]
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thank you
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[Music]
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[Music]
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foreign
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[Music]
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foreign
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[Music]
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well the plaster mold work is almost
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finished and there is some Putty work
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that I will do later
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I will open the tube and tell you a few
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things
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[Music]
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the first point is that you should be
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careful that the pipe does not change
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due to the pressure of the movement on
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its bending work
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it means that the pipe should not come
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out of that initial Bend
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[Music]
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to make sure that the bend of the pipe
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has not changed we draw a circle on the
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ground with the radius of the bend of
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the pipe
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then we put the pipe tangent to it to
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make sure that the original Bend of the
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tube has not changed
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as in the figure you see
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[Music]
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the second point is that the change in
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bending occurs more in the central part
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of the pipe that is perforated
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so that this problem does not arise you
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can weld on the pipe from an iron corner
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with a suitable Bend and with this the
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pipe will be more resistant to bending
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place an iron corner on the pipe like
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this and weld it to the pipe and create
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a central hole on the corner
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in this case the metal pipe will have
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more resistance
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another point is that it is better to
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clean the pipe at each stage of
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plastering
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you can easily do this with an iron wire
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like what I do
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[Music]
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and in this case you will see that the
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part under the pipe is completely
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cleaned
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[Music]
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well I'll work on the plaster mold some
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more then let's go to the structure of
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the solar dish
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well now we have completed the plaster
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mold and we need a metal frame for the
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surrounding of the dish
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and it depends on your work but I want
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this dish for a fixed Focus system
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because I want the solar dish to be
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square so its frame consists of four
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iron corner pieces
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the important point is that the bending
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radius of these sides is less than two
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meters
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and has its own calculation
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[Music]
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now if this is a side of this Square
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its bending radius is less than two
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meters and this radius is approximately
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1.83 meters in the figures you see this
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issue is clearly defined
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foreign
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[Music]
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if you look carefully at the figure it
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is completely understandable well I'm
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going to put these sides in the four
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corners
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I will put the camera in a suitable
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place
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[Music]
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because this solar dish is designed for
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a fixed Focus system so a part of the
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dish should be considered to pass the
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focus base
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and this is how I made it
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since this part is in the center of the
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dish it should be bent to a radius of 2
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meters
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and it should be placed here
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[Music]
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between these iron Corners I use small
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and light metal cans and weld them
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together and this makes the dish more
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solid
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unfortunately the time of the video has
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increased more than usual and the most
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difficult part of making the solar dish
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is done
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and so you will see the second part in
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the upcoming program so goodbye until
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the next program
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[Music]
