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Place it into a high-compression-chamber and raise it to a pressure where it changes to one of its higher temperature forms. This of course takes an incredible amount of pressure and the equipment needed would be far more expensive than a freezer.

Another Perspective:

Place the ice to be conserved, in the top part of a double boiler. In the bottom half, place disposable ice, rock salt, and some water (enough of each to surround the upper half when it's in place). Place the top half into the bottom half. This won't keep it forever but it should keep it from melting for at least 1/2 - 1 hour. The keep time can be extended by insulating the system, such as wrapping with wet towels (the evaporation will help to keep the system cooler, longer).

There is another, more elaborate method, involving parabolic mirror(s), in which you can expose the ice to the (4oK) sky, but this requires some fabrication skills and a little bit of money. However, once this system is in place and working, the keeptime is indefinite. At any rate, it's a great demonstration, and other applications for this principle might be found.

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15y ago

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