Low noise air-cooled package unit are specially designed for installation aboard vessels. They can be placed in both accommodation areas and technical spaces. The bigger capacity unit is designed with two or more identical independent refrigerant circuits and two speed supply fan - the other circuits takes over and fan at low speed in case of one malfunctions, maintaining partial cooling under all circumstances. Each refrigerant circuit has one hermetic scroll compressor, multiple compressors concept for optimized part-load efficiency and minimized starting current. Casing material: GI/SS316L. Customized design. Ex-proof type as optional.
Casing
Outdoor unit with SS316L casing and indoor unit with GI powder coated casing (Stainless steel material as optional) are built on a rigid steel frame. The casing is thermally insulated to prevent condensation. A plenum with grill direct blow type or ducted blow type can be selected as per project request. Fresh air intake is optional.
Compressor
High efficient hermetic DANFOSS or COPELAND scroll type as standard selected. Semi-hermetic Reciprocating type is optional.
Evaporator & Condenser
Multi-pass crossed fin tube coil is standard. A washable filter placed in front of the evaporator. Professional software coil design, 4 row or 6 row with row split, each refrigerant circuit covering entire coil face in 2-compressor units. In 4 compressor units, the coil is row split and has intertwined circuiting to activate entire coil face when any compressor is started. DX cooling coils shall be ARI certified and constructed of seamless copper tubing mechanically expanded to the aluminum fins or cooper fins. Blygold coating or E-coating as optional to protect aluminum fin or copper fin during long term exposed in marine environment.
Centrifugal fan – quiet, efficient
The fan section acts as a plenum, The efficient and quiet airfoil blade keeping discharge velocities and noise lower, and efficiency high. Bearing lubrication lines are brought closer to the front of the unit for easy maintenance. Fan is mounted on vibration isolation springs and connected on the inlet side with a canvas flexible connection, minimizing vibration and noise transmission.
