Overview

NESSy

New Energy-efficient Snowgun System

The New Energy-efficient Snowgun System NESSy combines the latest scientific knowledge with well-established snowmaking technology.
  • 80% less air pressure than comparable lances
  • Up to 2°C higher snow making start temperetatures (marginal temp.)
  • 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

Single-stage lance 50kg (10m length)
Multi-stage lance 55kg (10m length)
Lance lengths 2m / 3m / 5m / 7m / 10m
(other lengths on request)
Pivoting angle 360°
Tilt angle 45...80°
 

Downloads

in english: NESSy brochure
in deutsch: NESSy Prospekt
en français: NESSy brochure
A review of the energy use of mobile snowmaking at Swedish ski resorts
Product catalogue
 

Water and Air Pressure from NESSy*

Level Typical range of the wet-ball temperature Air Pressure Requirement Water Consumption @ 20 bar
Ground Level -4 bis -2 °C Air Pressure 8 bar:
max. 120 Nl/min
Air Pressure 10 bar:
max. 150 Nl/min
45 l/min
Level 1. -8 bis -4 °C 105 l/min
Level 2. < -8 °C min. 165 l/min

* Status February 2008

Suitable supplies

All supplies