Plumbing. Heating. Conditioning. Energy Efficiency.

Energy effective marine air conditioners

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10 August 2012

The company GREE Electric Appliances Inc has developed marine air conditioners.

The marine air conditioners are designed for marine applications incorporating the following features:
• Compact design
• High efficiency rotary compressors (5-16K)
• Cupronickel condenser coil
• Raised lance fin designed evaporator coil
• Polyester coated 2” (50mm) deep drain pan with two condensate drain locations
• Anti-vibration base pan
• Pre-charged and pre-wired systems for easy connections
• 3-speed fan motor. This eliminates all harmonic sounds and rumbles.
• Rotatable blower assembly

The controller offers the most technologically advanced design specifically made for the unique requirements of marine air conditioning. The controller has been designed with the following "user friendly" features:
• Non-volatile memory
• Low voltage display panel
• LED cabin temperature displayed in Fahrenheit or Celsius
• Multiple fan speed selections
• Compressor pressure fail safe protection
• Moisture mode cycle for humidity control

The self-contained Marine air conditioner consists of four main components and a refrigerant gas circulating through the system. The BLOWER draws warm cabin air across the fins on the EVAPORATOR where the heat from the air is transferred to the refrigerant in the evaporator coil. As the refrigerant evaporated from a liquid into a gas, it absorbs the heat from the cabin air. The COMPRESSOR then compresses the refrigerant gas and pumps it through the outer tube in the CONDENSER COIL. The seawater pump circulates cool seawater through the inner tube in the condenser coil; this cools the refrigerant and condenses it into a liquid. The heat from the refrigerant is exchanged to the seawater and discharged overboard. The liquid refrigerant is then passed through the EVAPORATOR COIL and the cycle repeats; removing heat from the cabin air lowering its temperature. The cooled air is blown through the ducting and out the supply air grille(s). For reverse cycle heating, the refrigerant flows in the opposite direction through the reversing valve. Heat is transferred from the seawater in the condenser coil to the refrigerant and then to the air blowing through the evaporator into the cabin. Seawater temperature will directly affect the a/c 's efficiency. This a/c can effectively cool your boat in water temperatures up to 90°F and heat in water temperatures as low as 40°F.

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