The potable liquid can be sprayed at 40 onto the inside 42 of the vessel 38 and onto the outside 44 of the vessel, and the liquid is then frozen on the vessel wall by {HEAD ~ the effect} of {TAIL ~ a cooling coil} 28 surrounding the vessel which can be rotated by a rotatably driven platform 30 
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The potable liquid can be sprayed at 40 onto the inside 42 of the vessel 38 and onto the outside 44 of the vessel , and the liquid is then frozen on the vessel wall by { HEAD ~ the effect } of { TAIL ~ a cooling coil } 28 surrounding the vessel which can be rotated by a rotatably driven platform 30
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