Ice sculptures, Ice figures, Ice towns in the winter season. Snow cannon: principle of operation, advantages and application DIY snow cannon
Evgeny Tsiporin / Alexander Kozlov / Alexander ButenkoEvgeny Tsiporin / Alexander Kozlov / Alexander Butenko
(Group of companies "Gorimpex")
Russia is a country with both the largest (in the future) ski equipment market and the world's largest opportunities for the construction and operation of modern ski centers. Today, the vast majority of Russian skiers do not ski in the most better conditions, which means that there is a shortage, which means that the market for the construction of this kind of sports facilities is super-promising, ski centers will be in demand for sure. However, this market has a number of features. It is worth noting that most of the Russian ski centers existing in reality or on paper are located near large cities, which is like a set of "advantages" (it is convenient to get from the city limits to the ski track, it is convenient to organize the work of the ski center itself in terms of communications, etc.). etc.), as well as a set of "minuses" and about one of these "minuses" must be said in detail.
The point is that most russian cities, and especially - cities with a population of over one million, around which ski centers are gathered, are located in a zone with unstable winters, with variable weather from November to March and with instantly disappearing priceless snow cover in case of thaw. Everyone remembers the “monstrous” winter of the 2006-2007 season, which beat all the indicators for high temperatures - up to +14 ° C in Moscow in January, and such “records” were set throughout the European territory of Russia.
Naturally, such natural disasters “kill” any demand for the services of ski centers, nullify all efforts for construction and improvement: there is no snow - none of the skiers will come to look at the green grass thawed through the frozen mud. At the same time, even such “minuses” can be turned into “pluses” using modern technologies, namely, by installing mechanical snowmaking systems on ski centers, simply speaking - systems that make artificial snow.
Similar technologies have been used in the West for many years, they are carefully worked out and allow even in city conditions (for example, the annual stage of the World Cup in cross-country skiing in Dusseldorf) to make a full-fledged ski track.
At the same time, these technologies have a number of features that must be taken into account.
Almost all ski centers in Europe use snowmaking systems for snowmaking during periods when there is not enough natural snow for full skiing. The formation of artificial snow requires three components - low temperature environment, a significant amount of water and, finally, the presence of compressed air. Snowmaking (snow cannons) uses significant amounts of water and electrical power to generate snow. This article includes the following sections:
1. Snowmaking systems
2. Tanks
3. Wet / dry bulb temperature
4. Special additives
5. Water pre-cooling systems
6. Management of snowmaking systems
7. Air compressors
8. Pipelines
1. Snowmaking systems
A professional approach to the production of quality snow is very important and many of the snowmaking system suppliers say “Snow making is art”. Snow quality from snowmaking systems can range from "very dry" to "very wet". The trails for beginners, for mass use, are not the same as trails for professionals, and require a completely different snow thickness and snow quality. The quality of the snow also affects the convenience of distributing it on the ski slopes. For example, to obtain an exceptional quality track, it is often necessary to lay a layer of dry and light snow on top of the main layer of wet, heavy snow.
Snowmaking systems reproduce the natural process of snowmaking. In nature, snow is formed by the condensation of water vapor into ice microcrystals at low ambient temperatures and low relative humidity. Pure water freezes (theoretically) at temperatures below 0 ° C, when several water molecules combine to one another and form what is called an embryo, a seed, or a nucleation center. Nearby water molecules continue to attach to the embryo and form ice crystals. This process is called homogeneous nucleation. If there are impurities in the water during the formation of ice crystals, then this process is called heterogeneous nucleation. Impurities serve as nucleation centers (seeds) for the formation of ice crystals. Heterogeneous nucleation is possible even at positive ambient temperatures. The temperature at which the formation of ice crystals on impurities occurs is called the temperature of heterogeneous nucleation. Snowmaking machines - snowmakers use these physical processes to make snow using cooling compressed air, water and sometimes additives that are used as crystallization catalysts.
There are three types of snowmakers (snow guns) - internally mixed snowmakers, externally mixed snowmakers, and finally ventilated snowmakers. Factors to consider when choosing a type of equipment include:
Wind speed;
Direction of the wind;
Ambient air temperature;
Compressed air availability;
Availability of electricity;
The location of the slopes to the cardinal points;
Below are the short descriptions three types of snowmaking systems:
Internal mixing system - a system using mixing water and air in the inner chamber of the snowmaker nozzle. When a mixture of water and compressed air leaves the nozzle, this mixture expands and the thermodynamic effect of cooling (below 0 ° C) occurs. Tiny drops of water freeze to form microcrystals, which in turn become nucleation centers. At such nucleation centers (seeds), snow flakes are formed from larger droplets.
External mixing system - Another type of water-air system. Such systems provide for the outlet of compressed air and water under pressure through separate nozzles of the snowmaker. The compressed air expands and strongly cools the microscopic water droplets exiting the water jets. In this case, nucleation centers are formed. In externally mixed systems, the jet velocity is lower than in internally mixed systems. For this reason, external mixing snowmakers are mounted on towers to give the water droplets enough time to nucleate and form snow before they reach ground level. Sometimes external mixing systems are used without the use of compressed air and fans. At the same time, for the successful production of high-quality snow, expensive additives, high pressures and chilled water are used.
Fan systems - Fan systems use air supplied by a fan instead of compressed air to form a suspension of water droplets in the air. In this case, the droplets stay in the air for a sufficient time in order to significantly cool and freeze. Fan systems are often also equipped with nucleation devices. Typically, such a device consists of a small air compressor mounted directly on the snowmaker and a nucleating air nozzle circuit. In this case, the mixing of compressed air with water and subsequent crystallization takes place already in the environment. This type of cannon is the most popular and in demand.
Snowmakers used in internally and externally mixed systems do not require an external power source at the site of the snowmaker. But, despite this advantage, such systems require centralized compressor and pumping stations. Fan cannons require power cables to be connected directly to the snowmaker installation site to power fans and air compressors. Internal mixing systems and fan gun systems operate over a very wide temperature range and control snow quality through the use of fans and air compressors. These technologies are best suited for wide pistes and pistes that are planned to open early in the winter season for initial snow coverage. External mixing systems are more economical in terms of energy consumption, but allow operation in a narrower temperature range. Another disadvantage of external mixing systems is the high wind sensitivity of the snowmakers. External mixing systems require up to 30% more snow packer work than internal mixing / fan systems. These systems are recommended for narrow trails and trails that open later. When choosing the type of snowmakers, not only the initial purchase cost of the snowmakers is taken into account, but also the cost of the system itself (towers, pumping / compressor stations). The calculation also takes into account the efficiency and the possibility of using this type of snow generator in specific conditions of the slope. This takes into account the snowmaking temperature, type of terrain, track width, desired start date of the season, noise level requirements.
Table 1. Advantages and disadvantages of certain types of snowmaking systems
|
Snowmaking system type |
Advantages and disadvantages |
|
With internal mixing |
Advantages: Low sensitivity to wind, work with high temperatures, low weight of the snow generator, the ability to snow wide tracks, the ability to adjust the quality of the snow. Disadvantages: Low energy efficiency, requires compressed air from the compressor station, high noise from the air compressor. |
|
External mixing |
Benefits: Greater energy efficiency compared to internally mixed systems as less compressed air is required. Low noise, easy control. Disadvantages: High sensitivity to wind, narrow operating temperature range, after installation it is difficult to move to another place, it is really possible to regulate snow quality only in a very narrow range, high losses due to wind and sublimation. |
|
Fan systems |
Benefits: Minimal compressed air required, most energy efficient technology, low noise level, wide range of snow quality control. Disadvantages: Fan snowmakers are difficult to move on the slope and require snow compactors to move as the equipment is bulky and heavy. |
2. Artificial reservoirs
Getting snow requires a significant amount of water. To create a snow cover with a thickness of 16 cm on an area of \u200b\u200b60 by 60 m, 277,500 liters of water are required. This high water demand is often a problem for ski resorts, as water sources with a significant water supply are required. Water intake from natural sources during the winter season, at low water flow rates, it can harm nature. To protect the inhabitants of reservoirs and the possibility of using small streams and rivers, artificial reservoirs of snowmaking systems are usually created. The use of artificial reservoirs also minimizes the cost of transporting water through pipelines. Such savings due to gravitational forces are possible provided that the reservoir is located above the installation level of the snowmaking system. At the same time, the costs of building an artificial reservoir are paid off by saving electricity for raising water over several years.
3. Wet / dry bulb temperature
The ambient temperature is taken as the dry bulb temperature. Relative humidity is a quantitative indicator of the content of water vapor in the atmosphere. The relative humidity of the ambient air plays a very important role in snow production. An increase in the amount of water vapor in the air leads to a decrease in the cooling rate of water droplets to nucleation temperatures (crystal formation). When water droplets are sprayed into the air at low humidity, that is, with a low content of water vapor, some of this water evaporates and, due to this, cools the surrounding air, because to evaporate water, you need to heat it until the latent heat of vaporization is reached. It takes 539 calories to evaporate 1 liter of water, while it takes only 80 calories to freeze. This means that the evaporation of one liter of water allows 6.7 liters of water to be frozen at 0 ° C (only 1 cal must be released to cool the water by 1 ° C, and this is the reason that the water temperature does not affect the thermal balance too much snow making process).
As a first approximation, the cooling effect of the evaporation process can be taken as follows: a decrease in the actual dry bulb temperature by 0.5 ° C for every 10% drop in relative humidity. Examples:
Air at -2 ° C and 50% RH has the same cooling capacity as saturated air (100% RH) at -4 ° C.
Air at 0 ° C and 40% relative humidity has the same cooling capacity as saturated air at -3 ° C.
Wet bulb temperature (humidity temperature) takes into account two factors at once - ambient temperature and relative humidity, therefore this parameter is used in the design of snowmaking systems. Wet bulb temperature is the temperature of the microdroplets leaving the nozzles of the snow generator, which is reached when all heat exchange processes with the environment are completed. All automatic systems (including water management) installed in western European countries usually begin to produce snow at -4 ° C WB. At the same time, it is believed that the production of snow at higher temperatures is unproductive and unnecessarily expensive. Only a few resorts in warmer parts of Europe, such as Spain and Portugal, start to produce snow at -2 ° C wet bulb temperature, because then there is no choice.
4. Special additives
To form water crystals at high ambient temperatures, special additives are used in water. The molecules of such additives play the role of nuclei (seeds) around which crystal structures are formed. As mentioned above, this process of crystal formation is called heterogeneous nucleation. Special proteins (proteins) are used as special additives. These additives save energy and produce snow good quality at marginal temperatures. The decision to use special additives usually depends on the purity of the water used and the presence / absence of natural substances in it that contribute to the crystal formation process. Often, water from natural reservoirs already contains a sufficient amount of essential substances, and, therefore, the use of additives is not required.
5. Cooling systems
At water source temperatures of more than + 5 ° C, special cooling systems are used to cool water before feeding it to the snowmaking system. Reducing the water temperature has a positive effect on the efficiency of snowmaking by reducing the energy loss for water evaporation. Cooling systems may have various designs and principles of work. Both cooling towers (cooling towers) and direct flow cooling systems can be used. The use of cooling towers allows for earlier opening ski season and produce snow at higher ambient temperatures.
6. Management of snowmaking systems
One of the important points when choosing equipment for a snowmaking system is the choice of the type of control, since further operating costs will largely depend on this.
Description of the work and advantages of automatic systems:
Information about the weather conditions of the environment (humidity, temperature, wind speed and direction) is sent as a standard analog or digital signal to the control system. The automation system evaluates weather conditions and automatically (without operator participation) adjusts the technological parameters of the snow making process. The operator, if desired, can also use a computer to set the operating parameters of the process. Automatic control allows you to significantly reduce the cost of pumping water and air (no unnecessary costs for pumping excess) and system maintenance. The time required to set up the system is greatly reduced, as the response time of the system components is only a fraction of a second. At the same time, the efficiency of automatic systems with internal mixing and fan systems increases by 30-50% compared to manual systems.
For externally mixed systems, the increase in efficiency is negligible because such systems do not require constant adjustments. With sharp changes in weather conditions, it is necessary to switch from snowmaking one area to another. The software allows the operator to concentrate on such tasks with ease, while the adaptation to weather conditions is provided by the system itself. The control system automatically adjusts the water pressure to adapt the snowmaking system to weather conditions. Moreover, the automation of air compressors regulates the pressure in the air line and, if necessary, distributes the load between the compressors, and also turns them on / off depending on the air demand of the system. The software allows for continuous monitoring of process parameters (water temperature, flow rates / pressures of water and air).
Manual systems take one to four hours to start up and one to three hours to shut down. At the beginning of the season, the time intervals during which it is possible to produce high-quality snow are from 6 to 8 hours. Automatic systems start-up and shutdown takes seven to fifteen minutes. Automatic systems continuously monitor the quality of the snow produced by continuously adjusting the operating parameters of the snow generators. Manual systems, on the other hand, require control and adjustment by qualified personnel directly at the installation site of the snow generators in the event of changes in weather conditions, which negatively affects the quality of the snow and increases its cost. The increase in the operational efficiency of snowmaking systems in comparison with manual systems is 40-60%.
The reliability and safety of the systems are decisive factors when choosing the type of control, since the systems use very high water and air pressures. A properly installed automation system allows you to control these parameters without operator intervention in the operation of potentially dangerous system elements. The system of instant notification of emergency situations and the state of the equipment allows the operator to immediately adjust the operation of the system.
Finally, automation systems create archive files-reports on all aspects of the snow generation process (consumed electricity, consumed water resources, the amount and quality of snow produced, as well as economic analyzes).
7. Air compressors
An air compressor system is often an integral part of a snowmaking system. Compressed air, when it leaves the nozzle of the snow generator, serves to obtain a dispersion of microdroplets in the air. These microdroplets are the "heart" of future snowflakes. For systems with internal mixing, the use of compressed air is a prerequisite for obtaining a water-air mixture. For such systems, the process of formation of snow crystals depends on the duration of the droplets being in the air and on the cooling effect when the water-air mixture expands at the outlet of the nozzle. External mixing systems and fan systems are based on the same physical laws.
The main source of energy consumption in snowmaking systems is air compressors. Typically, 40-70% of energy consumption comes from air compressors and their automation. Air compression systems consist of compressors, an air supply system, automation elements and sometimes compressed air storage systems. The initial cost of purchasing air compressors is only part of the undersea iceberg of capital expenditures, as the annual electricity bill is comparable to the cost of purchasing the compressors themselves. Therefore, for snowmaking systems, it is very important to choose a compressor with high efficiency and efficiency. An important role is also played by the tightness of the air supply systems, since if it is not tight, losses of up to 20-30% of the compressed air produced are possible.
8. Pipelines
Particular attention in mechanical snowmaking systems is paid to pipelines, on which the quality, reliability and durability of the entire system depend to a large extent. European companies, on the basis of many years of operating experience and taking into account the specifics of installation in mountainous conditions, have developed special types of pipes, technologies for their laying and connections, providing an optimal ratio of speed, quality and costs for the water supply system.
For example:
When using relatively expensive quick disconnect pipes with external and internal plastic coated and 30-year service life ensures high water quality, maximum speed and minimum cost of construction work and further operation, since there is no need for long-term use of special. technicians, highly qualified fitters, welders, seam testing, etc.
When using the cheapest welded, long and heavy "black" pipes, which are not specifically designed for use in highly rugged terrain (the laying of which requires special equipment capable of working on stony soils with large slopes, special technologies of high-quality welding, "anchoring", installation, waterproofing, etc.), not only the total cost of building a water supply system increases 3-4 times, but due to the low service life (about 5 years) and water quality (rust), operating costs for all equipment increase dramatically mechanical system snowmaking in general (pumping stations, hydrants, snow generators).
The best option with a low initial cost and acceptable quality (if the terms of favorable weather conditions allow for work) are light socket welded galvanized pipes. But the expediency of their use must necessarily be determined based on the specificity of the terrain conditions in each specific case.
We hope that the above data will convince potential investors and organizers of modern ski centers that when installing mechanical snowmaking systems, it is necessary to take into account all factors related to both the equipment and the place where the system will be installed. In addition, the mechanical snowmaking system always needs installation and maintenance ONLY by professionals and "amateurism" in this process is unacceptable.
To draw up a technical and economic proposal the ski run organizer must submit a topographic survey of the area on a scale of M 1: 1000 or M 1: 2000 with the following data:
Areas to be snowed;
Ski slopes and infrastructure buildings;
Place and nature of water intake (debit of water cubic meters / hour);
Time for initial snowmaking with a snow layer thickness of 30 cm (usually taken 50-200 hours);
Data on air temperature and humidity or wet bulb temperature (for starting the system at the beginning of the season, for operation during the season);
Data on prevailing wind direction and speed;
The degree of system automation (manual, semi-automatic, fully automatic centralized).
To plan ANY investment, both in terms of size and timing in a mechanical snowmaking system, several factors MUST be taken into account, namely:
1. Any ski complex claiming intensive and efficient use needs mechanical snowmaking systems.
Even in areas with sufficient natural snow cover, the use of mechanical snowmaking systems allows not only to extend the season by at least a month, increasing profitability, but also ensures the stability of planning and holding various events and competitions, guarantees the presence of a stable snow cover on tracks with intensive use, allows you to create specialized snow structures ( finish ", etc.), which, in turn, sharply increases the liquidity of the complex as a whole. And in the conditions of" global warming "the use of mechanical snowmaking systems becomes especially important.
2. Snowmaking system is a complex of engineering structures and devices, which necessarily includes:
Artificial reservoir for storing water (if there is no natural - lake or river);
Water intake (submersible, borehole pumps);
Water filtration system;
Water cooling equipment (cooling tower or direct-flow cooling), if necessary;
The main pumping / compressor stations (the pumping station can be mobile, in some types of snowmaking systems the compressors are installed directly on the cannons)
Water / air supply (pipes, hydrants, drainage system)
Measuring equipment (weather and wind stations, pressure and water / air flow control devices, etc.)
Snow cannons of various types (water-air with internal and external mixing, fan multi-nozzle and with a central nozzle) stationary or mobile
Snowmaking control systems (PLC units (programmable logic controller), control cables or fiber optic network, PC with centralized control, radio control modules)
Power supply from the TP (connectors for connecting guns, electric power cable).
Mechanical snowmaking systems Snowstar. Design, installation, repair, service.
The official representative of Snowstar in Russia is the Gorimpex Group of Companies.
06.03.2017 08:38
Today, snow cannons are an indispensable item in various fields. It is a snowmaking device with a powerful fan. Snow cannons are used in auto and aircraft construction, in the national economy. But they are especially popular in the field of sports recreation, in ski resorts. With the help of this miracle device, it is possible not only to create artificial snow, but also to spray it in the right direction at any distance.
Why and in what cases the organizers of sports competitions and active rest resort to creating artificial snow cover? The first reason is that there is not enough snow on the ski track or in areas where tourist centers for active winter recreation are located. Also, one cannot fail to note the quality of the snow obtained. If real snow consists of snowflakes, then artificial snow consists entirely of frozen water drops. This increases the moisture and density of the resulting snow cover, it stays even in all areas. Thus, it becomes possible to create the same conditions for all participants in sports events (which take place in an area with artificial snow cover).
Also, artificial snow does not melt longer than usual. What is the reason for this? The answer again comes down to the composition of the snow. Pieces of received snow in their own way appearance more like small grains, they do not crystallize to real snowflakes. In addition, the snow from the cannons is cleaner and more homogeneous, it does not contain foreign impurities, dust and other substances that contribute to rapid melting.
Snow production: myth or reality?
Snow production today is not a myth, but a reality. You can get snow of the required quality using a miracle of technology - snow cannons. So, the first function of a snow gun is to produce snow. How does it work? What determines the quality and physical properties of the produced snowflakes?
Artificial snow can be obtained in different ways - it all depends on the temperature of the water and air, as well as the duration of the flight from the spray. Snow flakes are mixed with air and then released into the atmosphere. Snow turns out to be softer in consistency if it is in flight for longer. If the snow fell to the ground very quickly, it would be heavy and wet. We can say that it's all about the device of the gun. Due to the fact that its fan is powerful and can spray water over very long distances, it produces soft snow.
Artificial snow is very popular nowadays for shows, various holidays, events, weddings and anniversaries. It is used in performances as a decoration, to decorate shop windows, in the interior of bars and restaurants, snow will also find application. It does not stain clothes, is non-toxic, looks exactly like a real one.
How to make artificial snow with your own hands
Most importantly, you need a liquid concentrate or a special powder. It is mainly manufactured by foreign manufacturers.
To make artificial snow with your own hands, you need to add ordinary water to this powder or concentrate, and after that it increases in its volume almost a hundred times. Such artificial snow is stored for several days. After the lapse of time, it begins to dry out and decrease in volume. If you collect it all and add water again, it will return to its previous state. Artificial snow is easily washed off and does not stain the surface.
Snow cannon
It will be very easy to spread beautiful snowdrifts in just a few seconds. In order to get the effect of a blizzard or falling snow, an air cannon and a special snow generator are used. The generator is a special device weighing from eleven to twenty kg. But there are also installations for artificial snow. big size - from forty kg. Such a snow generator works on a concentrate that was previously diluted with water. The concentrate is supplied from America, and it is certified. One liter of water is enough for an hour of operation of such an installation. The size and shape of the snowflakes can be pre-programmed. The spread of snowflakes is up to fifteen meters.
Video: Comparative test of snow generator guns.
The price for a snow gun is 150,000-1,000,000 rubles. The cost depends on its performance. They are mainly used for ski slopes. For a start, it's best to buy the most inexpensive snow generator. It can also be rented out. The rental price per hour of work ranges from two to five thousand rubles.
Fan snow generators (snow guns) are designed for outdoor use at subzero temperatures. The snowmaker includes:
Base in various versions (sleigh, wheeled chassis, bed, etc.)
Compressor
Fan
Water supply system
Nozzle block (collector)
Control unit (manual or ESGC-AUTO system)
The range of supplied fan snow generators (snow guns) manufactured by Ecosystem and their main specifications and cost
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* - maximum productivity the snowmaker is reached at a temperature of -15 degrees Celsius. At a temperature of -4 degrees Celsius, the performance of a snow gun is no more than 20-30% of the maximum.
** - the pressure and water flow required for the operation of the snow generator can be obtained using a stationary or mobile pump station.
*** - the standard package includes: a manual snow generator, an electric cable - 20 m, a water supply hose - 20 m, a set of spare parts, a headlight.
It is possible to replace the standard air compressor with an advanced oil or oil-free compressor version Snow (at an additional cost).
Snow cannon ESG-310 in operation
Snow generators are delivered from a warehouse or on order. Commissioning, commissioning, warranty and service maintenance is carried out by specialists of our company. Equipment delivery time is from 4 to 12 weeks, depending on the configuration and performance.
Automated monitoring and control system ESGC
All models of the ESG-2XX, ESG-3XX series can be equipped with an automated monitoring and control system ESGC developed by Ecosystem. The automated control and monitoring system of a snow gun is a hardware and software complex, which includes:
ESGC-AUTO - the system monitors environmental parameters (ambient temperature, relative air humidity, temperature of the supplied water, etc.), allows you to start the snow gun "with one button", automatically changes the operation modes of the snow gun depending on changes in environmental parameters, issues a warning or stops the operation of the snow gun when it is impossible to obtain high-quality snow or in case of an emergency. The system also allows you to control the snow gun in manual mode with an indication of the current environmental parameters. It is possible to connect the system to an external controller via the RS-485 interface using the MODBUS protocol.
ESGC-COM - the system is a head controller and an automated workplace operator, which monitors the environmental parameters (including the direction and strength of the wind), as well as the parameters of each snow gun equipped with the EGSC-AUTO system. The system allows you to fully simultaneously control the functioning of all snow guns, pumping stations, power stations, as well as program their operation based on the tasks of high-quality snowmaking of the object. The connection of the head controller, as well as the monitored devices, is carried out via the RS-485 interface (twisted pair), which provides a bus length of up to 1200 meters without repeaters. Data exchange is carried out according to the industrial MODBUS protocol, which makes it possible to connect and control third-party devices and structures.
Equipment for snowmaking complexes
Snow generators are part of the artificial snowmaking system, therefore, for effective artificial snowmaking of an object, a number of engineering structures and devices are needed, which includes:
Water intake structure;
Filtration system;
Water cooling system (if necessary)
Stationary or mobile pumping stations ;
Fittings, power posts, pipelines;
Control and management system;
High-pressure hoses;
Snow generators;
The Ecosystem company makes a turnkey installation of snowmaking complexes. Our specialists carry out the calculation, design, production, and commissioning of the snowmaking complex both on the basis of our own equipment, and on the basis of equipment from other manufacturers. Snowmaking complexes allow you to get a uniform stable surface snow cover with little or no natural snow in the winter, thereby extending the ski season by 1-3 months. Practice shows that the recoupment of the cost of a snowmaking system for a ski slope is limited to one season.
Snow cannon ESG-360 at work