To combat unseasonably low snow cover and to maintain optimal slope conditions, Ski Portillo in Chile now has five times more snowmaking capacity thanks to the installation of four Atlas Copco QAS generators powering 25 snow cannons.
Chile brings together world-class snow destinations that are key businesses for tourism and industry of great relevance for the country’s economy. Annually the country receives almost one and a half million visitors to its ski centres such as Portillo, the oldest ski area in South America.
In order to ensure ideal ski conditions on many of the resort’s intermediate slopes at times of lower than average snowfall, Ski Portillo has had to complement natural snowfall with sufficient man-made snow to cover nine snow tracks over an area of 10 hectares. During the 2019 season, a new snowmaking system was installed comprising 25 snow cannons positioned throughout slopes. These are powered by a bank of four skid-mounted Atlas Copco QAS 630 generators, housed in a plant room adjacent to the main complex.
Boosting snowmaking capacity
As a result, snowmaking capacity has been boosted to five times that of the previous season and it is now possible to create up to 16 inches of new snow over a 70-hour time period, with equipment functioning day and night if the ambient temperatures will allow.
Snow cannons require two climatic variables for their operation, a specific environmental temperature and a percentage of air humidity. When the system detects these conditions, the snow generation cycle starts up gradually. Whether it is to run for just a couple of hours or operate a full 24/7 session, it relies 100% on the power supply from the QAS machines as a single source of energy.
The new system is fully automated which allows maintenance teams to control and monitor the status of each machine at all times – even from a smartphone. The system is a combination of mobile and fixed machines, which allows uniform coverage of the slopes and the ability to move the machines as needed.
Power management system
A major feature of each of the QAS 630 units is a controller equipped with an energy management system to optimise fuel consumption and extend the useful life of multiple generators when they run in parallel to form a mobile or independent power plant.
The generators at the Portillo site incorporate Atlas Copco’s Power Management System (PMS). It is an innovative feature that manages the four generators running in parallel with load demand, starting and stopping units in line with increases or decreases in load. In this way, the load on each generator remains at a level which optimises fuel consumption and eliminates the need to run with low load levels, a situation which can cause engine damage and shorten the life expectancy of the equipment.