Greenhouse thermos

Modern energy-saving materials make it possible for almost every amateur horticulturist to build a winter greenhouse, even if small, but economically viable.

One of the projects that allow this to be done is a thermos hothouse. The walls of this building are capital, they are built of brick or wood and form a square with a side length of 4 meters. This form is not chosen by chance, because it has the least ratio of the total area of the walls to the total area of the greenhouse, and this reduces heat loss. From the inside they are covered with a heat-insulating coating of aluminum foil-foamed polyethylene. This coating works like a thermos - reflects the heat radiation and light into the greenhouse, the greatest effect is achieved if there is a slight slope of the walls inside.

If on ground area where construction of the given construction is supposed, ground waters lie low enough, the self-made greenhouse can be deepened into the earth approximately on 1 meter. Entrance to the premises must be equipped with a tambour with external and internal doors. Under the roof, above the doors and from the opposite side with respect to the vestibule, it is necessary to install transoms covered with honeycomb polycarbonate, for ventilation, when the temperature rises above the norm.

The roof is made of plastic curved pipes with a diameter of 4 to 6 centimeters. From the pipe to the pipe you need to leave a distance of one to one and a half meters. On top of them are sheets of a four-millimeter honeycomb polycarbonate, a width of 2.1 meters and a length of just over five meters. Pipes located at the edges of the roof are supported by gaskets made, for example, from polyethylene foam, on the walls located at the ends of the greenhouse.

Intermediate pipes should be fixed by means of transverse stretches from a thin cord or a thick line. These stretches should be placed every meter - one and a half. In order to reduce the heat loss through the roof, another layer of honeycomb polycarbonate is attached to the inside of the pipes using screws and wooden glazing beads or iron strips. Between the two sides of the insulation there is an air layer, thanks to which a thermos-glasshouse is obtained, which can save a very large percentage of energy for heating for its owner.

It is better to build the building in combination "honeycomb polycarbonate-plastic pipes", as the coefficients of their thermal expansion are almost identical, and this prolongs the service life of a structure such as a thermos glasshouse, in comparison with the combination "cellular polycarbonate-metal profile".

Plants are more convenient to grow on special shelves in boxes with a size of 600x300x100 mm. To ensure their needs for light energy in late autumn, winter and early spring, additional lightening with fluorescent lights is necessary .

When planning the construction of a greenhouse, it is necessary to take into account the need for its heating. Its heating can be water, electric, stove, and also by direct burning of natural gas. The thermos in the winter is isolated most of the time from the environment, so carbon dioxide, which is released from the combustion of propane, butane or methane, does not go anywhere, but is used by plants for their own metabolism. One of the options for heating can be a water heat accumulator, which is heated by the day with a gas burner, and gives up the entire heat all night.

Very suitable for heating greenhouses oven "Bullerian 00", its capacity is sufficient even for an area larger than 16 square meters. As fuel, wood waste or non-woodlogged wood is used, no more than 350 millimeters in length. The chimney must be at least 4.5 meters high and have a diameter of at least 120 millimeters.