You will need
- black paint;
- - glass or plastic film;
- - sawdust;
- - foamed polyurethane foam.
Most gardeners solve the problem in the following way: on the roof of the shower cabin is a huge barrel painted black. In the morning, the barrel filled with water which heats up during the day and in the evening the whole family can take a shower. If you haven't got this "heater"is your first step to ensuring a comfortable stay at the cottage.
Before install the black barrel on your site, think carefully about where you put it. It should be well-lighted place, it is desirable that it is the most obstructed from the wind. Keep in mind that the wind is blowing with a speed of 10 m/s, to cool the water in your heater by 10 degrees.
The large surface of the barrel illuminated by the sun, the faster the water is heated. One of the most common mistakes gardeners – when they leave the barrel either uncovered, or cover it first with a lid, often of a silvery color. This cover will repel sun light and does not help the water to heat up. For better accumulation of heat barrel cover with the black cover. This will significantly increase the temperature of the water, because the cover will be exposed to direct sunlight that is reflected.
If you like to take a hot shower and you need to raise the temperature another few degrees, you will also be able to achieve this with the help of improvised means. To do this, around the barrels you need to build a box. The wall of the box from the side, illuminated by the sun, it is necessary to tighten the plastic film or glazing. The dark side should be insulated with the help of insulator. For example, it can be filled with sawdust or wrap with polyurethane foam. After creating the "greenhouse", the water temperature in the barrel should reach 60 – 70 degrees, and even will have to dilute with cold water.