Ice and snow sports
Ice rinks, ice sheets, shall be compiled and maintained with the use of sea water in the pipes, buried beneath the surface. Tubes can be steel or plastic for permanent ice rink or plastic for the temporary installation. Temperature of heat carrier in the pipes is approximately 11C and should be lower than for rollers under the open sky, due to high solar radiation loads. Packaged liquid chillers are used by everyone, and for temporary facilities, they can be mobile, complete with brine, pumps and other equipment.
Outdoor artificial snow can be done by simulating the natural formation of snowflakes. In the snow machine pressurized water is passed through a nozzle, breaking it into a mist of tiny drops, and compressed air, which is then used to blow them up into the air. The molecules align and crystallize in ice particles, like drops of cool. The art of snow adjustment of water and air, to ensure that the water drops are small enough and sent far enough that they would freeze to death before they hit the ground. Make the snow, indoor snow domes very rapid cooling is additional ingredient, and it is usually provided with the help of liquid nitrogen.
Ice cave, in Kinlochleven is an innovative example of industrial refrigeration, Fig.
19.2. Ice wall cooling, uses a custom-built, low-pressure receiver, chiller unit, consisting of two semi-hermetic screw compressors, plate heat exchanger, evaporator and the expansion vessel operating on R404A refrigerant. The device has a total cooling duty of 100 kW and cooling ethylene glycol from 8C to 10C. maintenance, system cooling, condensing unit provides a 38 kW of cooling capacity and working on R404A refrigerant. The refrigerant is fed to the direct expansion air cooler installed in the ice cave. Both devices emission of heat to the atmosphere through the air-cooled condensers...
|
Industrial