1Snowmaker Transfer of Snowmaker Construction Plans WSL Institute for Snow and Avalanche Research SLF Martin Schneebeli, Matthias Jaggi Davos, 27th May 2014

2Snowmaker Old and new Snowmaker

3Snowmaker From prototype I to prototype II Old and new Snowmaker Both prototypes use the same main principles to produce nature-identical snow the ice crystals are brushed off the nylon cords instead of vibration motor Some components were transferred from old to new Snowmaker Higher reproducibility of the snow cristal size Higher amount of snow production High flexiblity because of modules on wheels (e.g. defrosting) Compacter device Advantages  There is no CE certification for this machine

4Snowmaker Design (CAD, NX UGS) Single parts: construction number_PRT.prt Assemblies: construction number_ASM.prt Drawings: construction number_DWG.prt For ordering: construction number_XXX.pdf  It is possible to export the files into other formats (iges, step, dxf) Exploded view with numbered part list Sketch (drawing) Exploded view

5 Design (Assemblies) 1: Water evaporation basin («Wasserbecken»)  Water basin mady of aluminum with heating coil  Fan and motor  Electronics 2: Nucleation chamber («Nukleationskammer»)  Nylon wires  Brush rack on linear guides  Snow accumulation box  Door 3: Condensation of residual humidity («Schneefänger») 1 3 2

6Snowmaker Design main frame by item Schweiz All parts which belong to the main frame of the Snowmaker are composed with the aluminum profile system from item Schweiz. We made the construction (we defined the all dimensions) in CAD … BUT NOT how the single elements are connected. This was done by item company Contact person

7 Snowmaker Frame of water basin, motor and fan insulated top cover of water basin wheel motor fan fan fixation plate motor fixation plate thermal insulated water basin humid air outlet connector brackets to nucleations chamber protective metal cover water inlet

8Snowmaker Construction of thermal insulated water basin insulation waterproof thermometer sacrificial anode (magnesium) against corrosion heating Coil framework heating coil cupper waterproof connectors to the heating coil heating coil framework water level safety switch water basin aluminum

9Snowmaker Divergent flow channel between water basin and nucleation chamber magnet jointflat face to water basin Main frame connection holes plates to build divergent flow channel magnetic locking plate threads

10Snowmaker Nucleation chamber screws to tighten the wires wires linear guides linear guides connection shaft brush rack motor brush rack wheel divergent flow channel snow accumulation box tilted top cover of nucleation chamber locking plates door

11Snowmaker Construction for residual humidity fixation plate for white cloth bag opening to nucleation chamber angle bracket (red) frame of cloth bag can be removed upwards

12Snowmaker List of components  List is not complete

13Snowmaker Electronic components fan speed control water basin temperature control brush rack control

14Snowmaker Possible (necessary) Improvements Heating coil in the divergent wind channel mechanical support of the glasses where the wires are new fan with integrated motor (24 VDC) design …

15Snowmaker Discussion / Questions