NOVELTY - Gas to be formed into ice is introduced via a pipe (22), from a supply tank (47), into a chamber (18) having freezing compartments (8), in panel assemblies (9). The chamber internal pressure being maintained below the gas equilibrium triple pressure and the compartment surfaces being lowered below the gas equilibrium vapor pressure by refrigerant pumped through coils (11) to condense the gas to ice.    USE - In the production of ice from a gas particularly carbon dioxide and also hydrogen, deuterium, tritium, neon, argon, chlorine, methane, silane, xenon, nitrogen, oxygen, ammonia, silicon fluoride, hydrogen chloride, ammonia chloride, uranium hexafluoride and arsine.    ADVANTAGE - The process of freezing gas directly into ice produces ice which is optically transparent, similar to glass, indicating that the solid is devoid of and does not contain unformed pockets and imperfections which would scatter light and converts a high percentage of feed gas to pellets. The conversion efficiency for the process utilizing CO2 is above 80% and can approach a theoretical value of over 90%. The high gas to pellet conversion efficiency obtained reduces cost by reducing the quantity of CO2 required to produce the pellets and reduces the release of CO2, which is a greenhouse gas, to the atmosphere. The process requires few moving components in order to produce the frozen pellets, can produce ice pellets of a predetermined shape and size and can be used as a cryogenic process pump or vacuum pump.    DETAILED DESCRIPTION - After formation of the ice the refrigerant is heated and passed through the coils, at a temperature above the gas equilibrium vapor pressure, to raise the compartment surface temperature to release the ice to fall out by gravity into a collection hopper (43). INDEPENDENT claims are also included for; (a) a process in which a number of chambers (18A) (18B) (18C) are provided in which ice is being produced in two chambers while ice is being released from a third to provide continuous ice production; and (b) a system for freezing gas into ice in which the panels are stacked in the chambers, a cascade refrigeration system provides coil refrigeration, a storage chest (41) receives ice pellets via a pellet release hopper (46) and the honeycomb compartments have a copper plate top (10) and walls (14) against which ice forms.    DESCRIPTION OF DRAWING(S) - The drawings show a cross section of a freezing compartment and a schematic of a system.    freezing compartment (8)    panel assembly (9)    copper plate top (10)    coil (11)    copper plate walls (14)    insulation (16)    (18B)(18C) freezing chambers (18A)    vibrators (37)    gas supply pipe (22)    insulated box (40)    storage chest (41)    collection hopper (43)    pellet release hopper (46)    gas supply tank (47)    system (160)