The two units will alternate running from day to day. A redundant system has two refrigeration systems built into one box. The freezer had a redundant refrigeration system installed, as well. The installation of these condensers went smoothly and helped the overall process remain on schedule. The units had to be lifted into place with a crane. The refrigeration condenser units were installed on the roof of the building on top of a steel rack. This vestibule acts as a buffer between the hot exterior air and the freezer air, so the contents are never at risk for temperature fluctuation. Then, the second set of doors open into the freezer. A forklift can enter the vestibule through a set of doors, which close to keep the warm air out. The new cooler and freezer unit was designed with a 12ft x 12ft vestibule. Third, medical freezers are required to maintain temperatures within a tenth of a degree of variation, so the system had to be incredibly precise. Second, the system had to be redundant to keep the samples and products at a stable temperature. First, they needed additional freezer space and less cooler space, so a new cooler and freezer combination was designed to replace the old one. worked with Siemens to develop a system that would meet all their requirements. This new freezer system has a hot gas line that will help to maintain the temperature inside the freezer within a tenth of a degree – which is required for storing medical samples. built a three-pipe redundant refrigeration system with an entrance vestibule and a larger freezer space. Siemens needed more freezer space for their samples and products, as well as a redundant system that would replace the staged system they were currently using. Problem: The current walk-in cooler and freezer combination for Siemens Medical Devices needed an upgrade.
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Although this system did help to protect the internal temperature from rising, it was not an official “redundant” system.Īdditionally, Siemens was running out of freezer space and needed to upgrade to a larger freezer.
Another system will turn on if the first does not cool the space adequately, and so on. In a staged refrigeration system, there are multiple systems installed to maintain the temperature, and when the temperature warms, one of the systems kicks on. Siemens’ current cooler and freezer combination operated on a staged refrigeration system, instead. Most samples and products stored for medical purposes are susceptible to slight temperature variations, so maintaining a steady temperature is vital. Medical refrigeration systems are required to have redundancy built into the system. The freezer was located inside the cooler so that the cold air in the cooler could act as a buffer between the hot air outside and the inner freezer. The current refrigeration system that Siemens had installed was a 60 x 60ft cooler and freezer combination. Siemens Medical Devices is a prominent manufacturer of state-of-the-art medical equipment in Walpole, MA, whose existing system needed an upgrade. When it comes to medical refrigeration, it is critical that both coolers and freezers maintain a steady temperature to avoid compromising the samples stored inside.