CASE STUDIES


For refrigeration, Johnson Controls made use of the company’s own Sabroe reciprocating compressors – two SMC104 and one SMC108L – as well as a screw compressor, type SAB151L. These compressors have been fi tted with frequency converters in order to optimise energy savings under partial load and enable precise power regulation. So as to reduce energy costs even further, the waste heat from the oil cooler and the compressed gas is used to produce hot water.


As another bonus, the air conditioning systems for the warehouse building and offi ces are connected to the high-pressure side of the ammonia refrigeration plant. The NH3


that neither the refrigerant nor refrigerant lines are located in the storage room; and the fact that installation and maintenance work is not carried out inside the cold chamber.


The use of the latest EC fans in the insulated coolers guarantees high-tech, energy-effi cient operation using low-noise fans.


A Siemens S7-400 in a redundant, failsafe design is used for the plant control system. If one control system fails due to a fault, the other takes over with no outage time. This provides maximum operating reliability for the customer and their goods.


/water heat


exchangers supply cold water that is distributed to the air cooler by pumps. This leads to additional savings as there is no need to install a separate chiller.


Multiple insulated coolers and connected air ducts ensure the temperature is uniformly distributed within the depot, which is crucial to the quality management and temperature control for the pharmaceutical products. Further key benefi ts of this type of cooler include its optimum use of space in the cold-storage room, leaving more space for rack systems – the fact


All operating conditions, alarms and faults are displayed using graphs and overviews on a touch panel with integrated screen.


Alarms are forwarded directly to Frigo-Trans


staff through a modem so that they can respond immediately.


Overall, the refrigeration plant designed by Johnson Controls provides a cooling capacity of 800kW at -10°C and 100kW at -37°C. The construction of the NH3


of Frigo-Trans in December 2014. Indeed, the storage temperature distribution was even more stable than had been expected.


Owing to the company’s continuing growth, Frigo-Trans found itself needing to replace a section of the storage building system and adjust the temperature level in this zone.


Thanks to the successful collaboration, in June 2015 the company once again commissioned Johnson Controls to extend the existing refrigeration plant in this zone. The plant comprised one reciprocating compressor, two insulated coolers and an air- cooled condenser. The storage zone then met the prescribed lower temperature level of 2°C. The technology used guarantees control of energy costs while maintaining the quality of the pharmaceutical products throughout the cold chain.


refrigeration plant meets


the latest legislative and safety requirements, making it a future-proof investment. Johnson Controls completed the project within the agreed budget and to the full satisfaction


Managing director Peter Norheimer said: “Transport and storage of pharmaceutical products is a very specialised area. Johnson Controls off ered us the best solution to guarantee the right temperature for the right goods at the right time. Thanks to their expertise, we are able to supply our customers with high-quality goods.”


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