Ship-specific Air Conditioner water Chiller

Ship, Cargo Ship-Specific Air Conditioning, water Chiller Unit

Ship-specific air conditioners provide a comfortable working and living environment for the crew on board, and also provide a suitable working environment for various electrical equipment and precision instruments used in the ship.

Ship air conditioners are important equipment that used to ensure the normal operation of personnel and equipment. The performance of marine air conditioners directly affects the normal operation of the crew and equipment on board, which in turn affects the overall combat effectiveness of the ship.

Therefore, the general design guiding ideology is to put reliability and maintainability in the first place under the premise of meeting performance indicators and dimensions.

what features marine air conditioner must have compare with land air conditioner?

1. Due to high salinity and high humidity in the marine environment, the marine air-conditioning system must have strong anti-corrosion and anti-mildew properties.

2. While Sailing, ship will tilt or sway due to wind and waves. marine air conditioning system must be able to ensure normal operation within certain range. (The national standard range:  the ship to pitch 5°, heel 15°, roll 45° and pitch 15°.)

3. The condenser must be adopted super corrosion proof material. because the air-conditioning system will use sea water and salty  sea wind as its cooling source.

4. Ships maybe operate on the ocean and are separated from land for a long time. so repairability is very important.

5.The operating environment of marine air conditioners changes with geographic location, the air conditioner should have an adaptive and adjustable load function, which can save energy on board to the greatest extent and improve the comfort in the cabin.

In short, in addition to basic refrigeration capabilities, marine air conditioners also need to have anti-corrosion, anti-vibration, anti-tilt and swing capabilities, etc.

To this end, the design and manufacture of marine air-conditioning systems must be:

1. Compressor

The compressor is the core of the refrigeration system. marine air-conditioning compressors operate in a tilt and swing, and the oil supply problem is crucial. If the oil supply is not smooth, the compressor will be burnt due to lack of oil. SMSCOLD Marine Air Conditioner adopt deep oil tank design to avoid the problem of insufficient oil supply caused by the tilting of the compressor on the ship.

The outer shell of the compressor is made of nodular cast iron, and the surface is sandblasted and sprayed with special anti-corrosion paint for ships.

2. Condenser

The water-cooled condenser adopt Bfe30-1-1 heat exchange tube with strong corrosion resistance, the end cover is made of cast aluminum bronze, the tube plate is made of (HA177-2A/16MnR) composite material,  safety valve is added to ensure safety, and the sea water side is equipped with additional protection Potential corrosion equipment.  add a liquid storage bag at the lower part of the condenser to solve liquid supply problem of the water-cooled condenser,

The air-cooled condenser adopt a copper sheet-covered copper tube heat-exchange to improve salt spray resistance.

3. System accessories

The main components of the refrigeration system and the filter drier, oil storage tank, gas-liquid separator, solenoid valve, sight glass, pressure gauge, shock absorb, high and low pressure protector, etc., are used to better monitor the operation of the system and protect the operation of the system Safety and reliability.

should to note, the accessories of marine air conditioners must  avoid welding in a maximum extent. The solenoid valves of marine air conditioners must be equipped with manual remote control rods.

4. Air duct design of Marine air conditioning system

The main characteristics of the marine air conditioning circulating air pipeline system are small space, large heat generation, and very limited space on the ship. When designing the air pipeline, full consideration should be given to the vibration isolation, shock absorption, and noise reduction, and minimize the resistance loss.  In order to reduce the vibration transmission during the operation,   soft connect should be equipped between rigid air duct connections.

5. Design of cooling sea water pipeline

Use high corrosive and high sand content seawater as cooling water,  the cooling seawater flow rate is designed based on 4℃ temperature difference. The water velocity in the pipe is designed according to 1～1.5m/s.

The fluctuation range of the cooling sea water temperature is -2～32℃. , equipped an electric three-way regulating valve to ensure the smooth running. adopt soft connection between joints to reduce vibration transmission, and convinent installation and maintainence.

Beside, All key elements and electrical components must be anticorrosive and anti-electromagnetic.

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