The OJ DC secures efficiency of up to 97%. The OJ DC series enables that the motor only delivers enough energy to power the compressor and no more, eliminating energy waste. Energy-Efficiencyīy adjusting compressor speed to match the cooling load of the building, the DC series ensures higher efficiency and comfort levels. These ratings are more than sufficient in most situations. It continuously works in almost any setting from -40☌ to +50☌ / -40☏ to +122☏ and has high scores from the IP and NEMA protection class, respectively, IP54/IP65 and NEMA 4X. The OJ DC series has been tested for continuous and unaffected performance. The DC series reduces cable length, especially the expensive ones.ĭurability has been an essential keyword throughout the R&D phases, rendering DC ideal for central and decentralised locations where environments get rough. The dedicated scroll compressor drives work perfectly in a modular and flexible solution offering more possibilities when configuring the system. The new OJ DC series fits perfectly in decentralised systems as they perform better under varied conditions. At the same time, buildings with overly large central AHU systems and large single-compressor chillers typically perform poorly during off-hours and part-load conditions. They can better meet the demands of different tenants in different parts of the building throughout the day and night and produce much less noise. Still, decentralised systems are gaining popularity among building owners and facility managers, as they are cheaper, easier, and faster to install. Perfect for Decentralised SolutionsĬhoosing between a central or decentralised solution depends on the building’s purpose and cooling and heating requirements. The dedicated scroll compressor drives carry considerable advantages for applications where efficiency, durability, and reliability are essential: significantly lower energy consumption and operation costs. Both DV and DC series result from combining EC (electronic commutation) and FC (frequency converter) technologies. The new DC series is built on proven OJ technology used in the existing DV series. The dedicated drives for compressor systems comprise five power variants (from 4 to 15kW). The oil handling function ensures compressor lubrication with precise oil management. The OJ DC series warrants optimal performance for permanent magnet brushless motors, especially during start-up and part-load operation. The new drives optimise motor speeds and compressor performance, reducing stress on mechanical and electrical components, prolonging your system’s life and minimising downtime. The new solution presents a variable speed drive (VSD) that controls the frequency supplied to the motor in the compressor in response to real-time demand on the system. When the need is low, the drive will run at a reduced speed, requiring less energy. The OJ DC series has the ability to adjust the speed of the motor to meet the capacity demands. Perfect for chillers and AHUs, the new series of dedicated drives is key to keeping the compressor’s optimum working condition while securing performance and efficiency. A dedicated drive for scroll compressors allows compressors to operate at variable speeds, reducing power consumption in cooling and heating applications compared to fixed-speed motors. The OJ Drives allow fans in ventilation and compressors in chillers and AHUs to be operated at different speeds, which results in significant energy savings. Most Piston compressors are belt driven causing a minimum slippage loss of 5% and also frequent belt replacements.The new dedicated scroll compressor drives ( OJ DC series) allow chillers and AHUs to use more effective motor technologies while providing the means to adjust the compressor capacity continuously. Tip seals are also avoided in BAC Scroll compressors. There is no physical contact between the scrolls therefore wear is negligible. Piston compressors have a lot of hidden maintenance over it lifecycle like changing piston rings, pistons, cylinders, Valve Blades, Non Return Valve, etc. Higher chances of mechanical failure.Ĭompared to piston compressor it 70% lesser moving parts making it more reliable There are a lot of moving parts in the piston compressor like piston, rings, crank shaG, valve blades, etc. Friction is negligible as the scrolls do not touch each other increasing the specific power There efficiency is much higher as there are no intermittent opening and closing of valves. These factors cause the specific power to be high compared to other compressor types There are many losses in piston compressor such as valve blade losses, friction losses, etc.
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