Such a water heater will be very useful at your summer cottage during the summer season.
From the old and unsuitable refrigerator, it is necessary to remove the serpentine. From the remnants of the freon should be thoroughly washed it with a strong stream of water.
For strength and reliability, the coil itself must be placed in the frame.
Wooden rails are suitable for making the frame. The coil must be freely placed between the rails. To withdraw the tubes, neat cuts should be made.
You will also need rubber (a rubber mat for everyone is at hand), glass (you can apply old glass), foil.
Now that the frame is knocked out, a rubber rug, glass and foil are prepared, you can start assembling the structure.
It is necessary to fit the rubber and glass by the size of the frame.
After that, put a rubber rug on the lower rails, which should lie on a flat surface. The lower slats are placed at an angle (then they will have to be knocked out with the frame).
The foil is spread on the rug, the coil is placed, which is already inserted into the frame and then the frame is chopped with the lower rails.
It should turn out a hard and strong design.
After that, you need to glue all the cracks in order to exclude the ingress of cool air inside the collector. To do this, you can use ordinary wide tape.
The next stage is water eyeliner to the coil.
To do this, you need a pvc pipe. Sealing the joints is provided using clamps, wire or adhesive tape.
The coil itself should be attached to the frame with clamps that can be removed from the refrigerator. Clamps for reliability must be fastened with screws.
Further. Glass is placed on top and glued around the entire perimeter with tape.
The water heater is ready.
Now you need to make supporting structural elements. It should be taken into account the fact that the best heating of water will be ensured when the rays of the sun fall at a right angle. Therefore, it will be better if the collector is placed so that it can be turned and regulated in relation to the sun. To ensure this, it is necessary to make longer tubes for supply and drainage of water, which should also be flexible.
The glass should be fastened at the bottom with a couple of screws in a couple of screws to avoid its sliding down (as a rule, this comes from the heat).
The next step is to install the tank in order to accumulate hot water (it must be installed above the collector).
Since everything will occur through the natural convention (the water heats up and expands, as a result of which it rises up, while displacing cold water). This is done in dwellings for autonomous heating with boilers.
That is, it is necessary to make tubes to drain hot water (from the upper part of the collector to the upper part of the tank) and the reverse influx of cool (from the lower part of the tank to the lower part of the collector). At the same time, remember that the collector should move and, therefore, the tubes should be flexible and long.
Cranes should also be installed.
Cold water should approach the tank from below. If there is no water supply, then you need to install another container, which should be even higher than the tank for hot water and make the transition from the lower part of the upper container to the lower part of the tank with hot water. Water in the tank will need to be poured manually, and it will naturally enter a hot tank.
The second crane should be installed on the lower submarine to the collector. It is needed in order to make it possible to complete water from the system.
And the third tap must be installed on a tank with hot water (about half a tank height). Through this crane you will take hot (warm water for your needs).
On a sunny and clear day, water in such a water heater can warm up to 65-70 degrees.
