The New Energy-efficient Snowgun System NESSy combines the latest scientific knowledge with well-established snowmaking technology.
- 80% less air pressure than comparable lances
- Snow production start at -1.5° WBT
- Higher water temperatures has less of an effect
- Low noise emissions
- No additives required
This innovative snowgun is awarded by Swiss Excellence and is the result of 3 years intense research and development and joint collaboration between the Institute for Thermo- and Fluid-Engineering ITFE, University of Applied Sciences Northwestern Switzerland, Swiss Federal Institute for Snow and Avalanche Research SLF, Davos, MVT micro technologies AG, nozzle technology, and BÄCHLER TOP TRACK AG, snowmaking technology. This project was supported by the Innovation Promotion Agency (CTI) of the Swiss Federal Office for Professional Education and Technology (OPET).
Through field tests in a climate controlled wind tunnel with a detailed theoretical model numerous breakthroughs could be achieved and then optimized. The results of the breakthrough snow lance is a drastic reduction of the required air pressure, snow making at a 2 °C higher temperature and snow performance is affected less by higher water temperatures. Through improved nozzle technology and the reduced air pressure NESSy produces very low noise emissions.
Main Features of NESSy?
The New Energy-efficient Snowgun System NESSy combines the latest scientific knowledge with well-established snowmaking technology. Several patents on the new nozzle technology are pending.
NESSy based on reliable Bächler snowmaking technology
- Modular design
- Single- or multi-stage water flow
- High-quality nozzles from MVT micro technologies AG
- Existing Bächler snowguns can be upgraded easily
Technical data
| Lance lengths |
10m, 8.5m, 7m, 5m |
| Type of control |
manual, automatic, fully automatic |
| Snowing levels |
1, 2 or 4 Levels |
| Weight incl. lifting device |
160 kg (at 10 m Lance length) |
| Energy requirement |
0.8 kW (central air), 2.2 kW (Onboard-Compressor) |
| Air supply |
max. 150 Nl/min at 10 bar |
| Water flow rate |
30 to 234 l/min standard setup at 60 bar |
| Working pressure |
10 - 60 bar |
| Throw |
5 - 20 m |
| Noise level |
63 dB at 20 m |
| Fast change system BTT |
available, for optimized handling |
| Nozzle assembly |
9 water- und 3 nucleator-nozzles |
| Start marginal temperature |
-1.5° WBT |
| Maximum performance from |
-8° WBT |
| Snowing performance |
4 up to 32 m3/h |
| Specific snow weight |
400 - 450 kg/m3, adjustable |
| Foundation |
Pit constructions, Concrete- and Screw-Foundations, Mobile solutions |
| Retrofit/Conversion |
easily possible, for existing Bachler lances as well for other providers |
Snow cover map and Snowspider
Downloads
NESSy Fact Sheet
A review of the energy use of mobile snowmaking at Swedish ski resorts
Snowmaking overview
Product catalogue
