Forget about clearing snow in front of entrances and garages! By installing underfloor heating on outdoor surfaces, you will effectively solve the problem of removing snowfall and ice.
The easiest and most efficient way to make walkways, paths, terraces and squares passable and safe in the winter is to set up underfloor heating which will heat the surface so that ice and snow do not stay on the surface.
Except access paths i feels, are usually heated ramp at the entrance to the garage, and it is possible to heat the roads in areas where there is a danger of ice formation (entrances and exits from the tunnel, sharp curves and ascents). Heating football fields or even certain park areas is also a type of outdoor heating application.
Underfloor heating will heat the substrate just enough so that ice and snow do not stay on the surface.
Nebojsa Stanic from the company Rehau points out that with certain technical preconditions, there is no external surface that cannot be heated. Large squares such as Red Square and Manege Square in Moscow, or King’s Square on Zlatibor, as well as the grass field at the Red Star Stadium, have an underfloor heating system installed.
Heating type for smaller and larger outdoor areas
In principle, we can divide the installations into hot water underfloor heating i electric underfloor heating. In the case of hot water underfloor heating systems, heating surfaces are installed in the construction pipes through which fluid flows (mainly a mixture of water and glycol). This system is heated by a special heat source – heat pumps, gas boilers… Electric underfloor heating systems include installation electric cables into the construction and direct heating of the surface with electricity.
Hot water underfloor heating systems are, of course, more favorable from the aspect of energy efficiency, but they are also more complex and more demanding for smaller investments.
Hot water systems are installed on larger areas, and electric underfloor heating on smaller areas.
A clear limit on the cost-effectiveness of hot water heating in relation to electric heating is difficult to set, but in principle it can be said that for smaller areas (shorter access path, terrace of a couple of squares…) preference should be given to electric underfloor heating. Larger areas are usually solved with hot water underfloor heating systems, Nebojsa Stanic points out for our portal.
Underfloor heating systems are systems that use low temperature water for heating, the so-called. low temperature systems and as such are best combined with heat pumps. Heat pumps are just the most efficient with such systems because the power consumption for compressor drive is the lowest. They are also an effective solution gas condensing boilers.
Of course, these systems can be connected to other energy sources, including the electric boiler, with the appropriate automation that will ensure that the temperature in the system is not exceeded.
External underfloor heating installation method
The best way to install heating is in compact constructionu (for example in a concrete or buffer layer, ie on a reinforcing mesh or supporting rails), where good adhesion around the pipe ensures good heat transfer.
Pipes they can also take the ground, which is the case with grass heating. Laying in sand is not recommended due to poor thermal characteristics of dry sand.
Which type of pipe to choose
The type of pipes used in outdoor heating systems does not depend on the dimensions of the space to be heated (the same material is used in the case of a square or a small terrace). When choosing a material, it is extremely important that it is robust, resistant to mechanical damage due to the installation conditions and, of course, long-lasting. Rehau applies exclusively to underfloor heating systems cross-linked polyethylene pipes PE-Xa, the highest quality polymeric material, and these pipes are guaranteed for 10 years.
The way of laying and distributing the pipes themselves can be different, a larger areas are mostly covered with pipes of larger diameter. With extremely large areas, the method of distribution and supply of pipe registers is complex, and in one installation it is possible to use several different dimensions of pipes. In smaller systems, everything is solved by directly connecting the pipes to the manifolds, using pipes with a diameter of 20 or 17 mm.
Storage space for outdoor heating equipment
When it comes to underfloor heating, in addition to the cables that are placed in the structure, an additional minimum space for storage is required. junction boxes through which the system is controlled – usually on the wall of the garage or the room next to the staircase.
With hot water heating, it is necessary to provide space for storing equipment such as circulating pump and ancillary equipment. Usually, the same source can be used as an energy source, which is also used for heating the building to which the treated surface belongs.
Even with large systems, it is good to predict that the heat source covers more consumers, primarily due to the frequency of use of outdoor heating systems.
It is necessary to provide for the inclusion of the system not only according to the external temperature, but also the humidity of the air.
In order for the outdoor heating system to be energy efficient, it is necessary to provide for the inclusion of the system not only according to the external temperature, but also the humidity of the air (special floor probes), in order to avoid unnecessary system activation if there are no conditions for ice formation. Larger systems can also be guided by meteorological parameters.
Maintaining the installation itself in the construction is practical there is not. With hot water systems, it is necessary to maintain the parts of the installation (pump, boiler) as well as with conventional heating systems.
Prices of underfloor heating of external surfaces
A large number of factors that affect the choice of type of installation and the method of installation also affect the price of the installation itself, so it is difficult to give a specific answer to this question. What can certainly be said is that floor heating systems are more they do not carry the epithet of expensive installations.
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