This innovative, compressed system drives several advantages:
Adrian Crowther, Design & Standards Manager (Refrigeration) at the Co-operative Group, is pleased with the use of the new technology: “The compressors are very compact, so the system takes up less space overall.” A feature that is particularly useful for installation in confined spaces.
In addition, the new unit is not only smaller but also lighter compared to previous compressors. According to Emerson, the new unit weighs about 60 percent less than comparable solutions using conventional technology, making it easier to transport and install. It is thus also more suitable when systems are installed on rooftops, for example, which is often the only option in densely built-up urban areas.
The system is also significantly quieter, Crowther points out, ensuring “that the strictest noise limits can be met. With so many urban stores, this aspect is hugely important to Co-op. In fact, the noise level of the Copeland system running was so low that when I walked into the plant room I wondered if it was even running.”
Co-op was very pleased with the test run and decided to roll out the technology to other stores.
According to Emerson, the Economizer system variant also makes it possible to retrofit existing refrigeration systems, “This design would also be suitable to replace existing booster systems without having to adapt the refrigerated cabinets. However, a slightly higher cost price is to be expected, as an additional plate heat exchanger and a high-pressure expansion valve have to be installed in contrast to the simpler variant with direct flash gas injection,” Liegeois explains.