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Sign upNovember 2, 2023
CGP
Charroux
Our first Neodry system was installed in a factory specialised in the production of ice creams. In the production room, in order to avoid the development of mould and bacteria, the required setpoint is 15°C in temperature and 60% in relative humidity. A classic AHU with coils was initially installed with an air treatment capacity of 5.000m3/h. We installed and commissioned our Neodry system in November 2023. After more than 6 months we noted that the specific setpoint was strictly respected and that the consumption of electricity was reduced by 60%. The regular control inspection has not detected any issues in components aging which proves that a yearly basis maintenance will be sufficient for Neodry.
The dehumidification and cooling AHU in the ice cream factory was based on a direct expansion cooling and dehumidification coil followed by an electrical reheat. Our solution NEODRY allowed to replace the initial AHU by a NEODRY dehumidifier supplying the factory with cooled and dried air. Our NEODRY pilot plant proved a 60% electricity consumption reduction compared to the initial AHU. From an economic point of vue, the electricity savings allow to reduce the energy costs by 2500 Eur per year.
The innovative membrane-based exchangers developed by STEM are based on the physical principle of heat and mass transfer through the membrane. With NEODRY, the air that has to be dehumidified, goes through the membrane exchanger. A liquid desiccant solution (highly concentrated in salt), circulated on the other side of the membrane, absorbs the humidity present in the air that is transferred through the membrane. In this process, treated air is never in contact with the solution thanks to the membrane hydrophobic property. The regeneration of the desiccant solution is done thanks to low-temperature waste heat (around 30°C) in a symmetrical membrane-based exchanger. This innovative dehumidifier system allows significant energy savings compared to existing solutions like solid desiccant wheels (75% savings) or AHU with cooling coils (above 50% savings).
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