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Shore power or shore supply is the provision of shoreside electrical power to a ship at berth while its main and auxiliary engines are shut down. [1] While the term denotes shore as opposed to off-shore, it is sometimes applied to aircraft or land-based vehicles (such as campers, heavy trucks with sleeping compartments and tour buses), which may plug into grid power when parked for idle reduction.
When being transported over the road on a trailer or over rail wagon, they can be powered from diesel powered generators ("gen sets") which attach to the container whilst on road journeys. Refrigerated containers are capable of controlling temperature ranging from −65 °C (−85 °F) up to 40 °C (104 °F).
Although the nominal voltage of a 12 V lead acid battery is 12 V DC, when the engine is running the car's battery charging system will bring the system voltage to 13.8 V DC or higher. [10] The possible range of battery voltages from 11–15 V DC must be taken into account by devices attached to the cigar lighter socket.
By 1890, after acquiring the patent rights of Franz Windhausen's CO 2-compression refrigeration system, the J & E Hall company installed the first marine CO 2 refrigerator system on the Nelson Line ship Highland Chief. In 1900, a worldwide survey found 356 refrigerated ships, 37% of which had air machines, 37% ammonia compressors and 25% CO 2 ...
Common absorption refrigerators use a refrigerant with a very low boiling point (less than −18 °C (0 °F)) just like compressor refrigerators.Compression refrigerators typically use an HCFC or HFC, while absorption refrigerators typically use ammonia or water and need at least a second fluid able to absorb the coolant, the absorbent, respectively water (for ammonia) or brine (for water).
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