| 摘要 |
An installation comprising a cupboard with a top section providing an assembly of cold units, and a preserving section provided with insulating shelves and trays with through slots for placing containers thereon. Each insulating shelf comprises, in each zone supporting the container base of the meal service trays, a tubular pipe exchanger connected to a cooling pipe circuit, while at least one heat exchanger on each shelf is associated with an electric heating unit, and the cold units assembly is a sealed chamber formed by and/or containing tubular heat exchanging pipes whereof the tubular networks are interconnected to each other and connected to a cooling pipe circuit.
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