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PCE
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CPC Subgroup
F25B 15/04

the refrigerant being ammonia evaporated from aqueous solution

Full Title

Sorption machines, plants or systems, operating continuously, e.g. absorption type > without inert gas (, F25B15/12, F25B15/14, F25B15/16 take precedence) > the refrigerant being ammonia evaporated from aqueous solution