Refrigeration / Fruit and vegetable Storages

Hamburg Central Market Hall

Thrifty, robust, and with a long-life cycle: these benefits characterize the entire cooling and refrigeration technology used by the north-German potato and vegetable wholesaler called Die Neuenkirchener Heidekartoffel GmbH (“Heather Potatoes from Neuenkirchen”). At its new location in the main section of the Central Hamburg Market Hall, the company employs efficient chilling to guarantee that potatoes, onions, convenience food, and eggs remain fresh with uniform excellent quality. The new refrigeration system saves around a third of the energy required by the old system, part of which was originally installed in the 1980s.

Kelvion References Refrigeration Market Hall Hamburg

Compared to power consumption of the old systems, the present concept designed by Wassim Dahche – Project Engineer of the Hamburg refrigeration company Westermann Kältetechnik – and the new multicompressor refrigeration system built by Westermann achieves, for the same cold room volume and the same floor space, power savings of one-third. This Westermann multicompressor plant, with two GEA Bock HGX compressors, as well as Kelvion evaporators, has maximum refrigeration duty of 60.0 kW. The refrigeration plant is output- and frequency controlled, since the compressors are regulated via an inverter. The Küba SGBE 092C direct evaporators are monitored via electronically controlled injection valves. Energy efficiency in the cold rooms. In each of the four cold rooms, one Küba SGBE 092C air cooler with a duty range between 15 and 19 kW assures the proper temperature as well as sufficient relative humidity. The Kelvion evaporators each have two fans, which circulate air at a rate of 9,060 m³/h. With fin spacing of 7 mm, air throw in the open space is 37 m, at an air velocity of 0.5 m/s.

Despite the low temperature difference at the evaporator, the great surface area and the air output provide for constant and controlled relative humidity – which ensures that the products can be stored on the shelves in accordance with regulations. The electronic injection valves provide optimal and output-oriented control of the direct evaporators and, in turn, offer great energy efficiency of the refrigeration plant. The refrigeration plant in Hamburg is controlled with the aid of a load- and switchcontrol cabinet with electronic refrigeration actuators and signal lamps. A databus connects each refrigeration point as well as the multicompressor refrigeration plant with a PC in the administration center, from which the systems are monitored. This system immediately provides acoustic and optical alarms in case of malfunctions such as temperature deviations in the cold rooms. As soon as the doors of the cold rooms are opened, the refrigeration system is immediately switched off by the door contact switch. The entire energy-efficient package – which meets extremely high standards also with respect to lighting systems and other building operations – is designed for a life cycle of 20 years.

Kelvion References Refrigeration Market Hall Hamburg
Kelvion References Refrigeration Market Hall Hamburg
Kelvion References Refrigeration Market Hall Hamburg
Kelvion References Refrigeration Market Hall Hamburg
Kelvion References Refrigeration Market Hall Hamburg
Kelvion References Refrigeration Market Hall Hamburg
Kelvion References Refrigeration Market Hall Hamburg
Kelvion References Refrigeration Market Hall Hamburg

Compared to power consumption of the old systems, the present concept designed by Wassim Dahche – Project Engineer of the Hamburg refrigeration company Westermann Kältetechnik – and the new multicompressor refrigeration system built by Westermann achieves, for the same cold room volume and the same floor space, power savings of one-third. This Westermann multicompressor plant, with two GEA Bock HGX compressors, as well as Kelvion evaporators, has maximum refrigeration duty of 60.0 kW. The refrigeration plant is output- and frequency controlled, since the compressors are regulated via an inverter. The Küba SGBE 092C direct evaporators are monitored via electronically controlled injection valves. Energy efficiency in the cold rooms. In each of the four cold rooms, one Küba SGBE 092C air cooler with a duty range between 15 and 19 kW assures the proper temperature as well as sufficient relative humidity. The Kelvion evaporators each have two fans, which circulate air at a rate of 9,060 m³/h. With fin spacing of 7 mm, air throw in the open space is 37 m, at an air velocity of 0.5 m/s.

Despite the low temperature difference at the evaporator, the great surface area and the air output provide for constant and controlled relative humidity – which ensures that the products can be stored on the shelves in accordance with regulations. The electronic injection valves provide optimal and output-oriented control of the direct evaporators and, in turn, offer great energy efficiency of the refrigeration plant. The refrigeration plant in Hamburg is controlled with the aid of a load- and switchcontrol cabinet with electronic refrigeration actuators and signal lamps. A databus connects each refrigeration point as well as the multicompressor refrigeration plant with a PC in the administration center, from which the systems are monitored. This system immediately provides acoustic and optical alarms in case of malfunctions such as temperature deviations in the cold rooms. As soon as the doors of the cold rooms are opened, the refrigeration system is immediately switched off by the door contact switch. The entire energy-efficient package – which meets extremely high standards also with respect to lighting systems and other building operations – is designed for a life cycle of 20 years.

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