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Clear ice means a solid precipitation which forms when air temperature is between 0 °C (32 °F) and −3 °C (27 °F) and there are supercooled, relatively large drops of water (from freezing fog). A rapid accretion and a slow dissipation of latent heat of fusion favor the formation of a transparent ice coating, without air or other impurities. A similar phenomenon occurs when freezing rain or drizzle hit a surface and is called glaze. Clear ice, when formed on the ground, is often called black ice, and can be extremely hazardous.
System and Method for Rapidly Producing Clear Ice Shapes
An ice making system and its associated method of making clear ice. A mold is provided that defines an interior cavity. An open neck leads into the interior cavity and provides a pathway for water to be added into the interior cavity. A coolant system is used to cool at least the lower part of the mold. Water is added to fill the interior cavity. An agitator is coupled to the mold. This causes the water in the interior cavity to wash over the forming ice as the water freezes within the mold. The agitator is controlled to prevent areas of slow water movement within the mold. Active cooling is maintained until ice fills the interior cavity of the mold and at least part of the open neck.
Owner:ROLAND EDWARD J