ac& r.txt

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Author:
kristensen01
ID:
190318
Filename:
ac& r.txt
Updated:
2012-12-20 15:08:25
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acr
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Description:
acr
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    • author "me"
    • fileName "ac& r"
    • tags ""
    • description ""
    • type of air conditioning plants and refrigerant units we have
    • 80 tons reciprocating water chilled
    • 1.1 ton reciprocating refrigerant unit
  1. refrigerant compressor
    • york
    • function is to pump and compress low pressure refrigerant vapor in the condenser where at higher pressure it is condensed to a liquid
  2. ac compressor
    • carrier
    • draws the refrigerant suction vapor gas from the water chiller and delivers it to the condenser at an increased pressure and temperature
  3. chill water pump
    • centrifugal type
    • used to take suction from water chiller from their from their chilled water is pumped to various places throughout the ship
  4. 2 major machinery spaces utilizing chilled water
    • rast
    • aft steering
  5. condenser
    • shell and tube heat exchanger
    • sea water flowing through the condenser tubes serves to condense the compressed gaseous refrigerant flowing over the tubes by absorbing latent heat from it.at the same time the refrigerant is also lowered in temperature
  6. receiver
    serves as a liquid refrigerant reservoir when there are surges due to load changes in the system and as a storage space when pumping down the system
  7. freeze box/chill box
    provide sufficient refrigeration to lower product temperatures to the design room temperatures and preserves food consumed by s/f
  8. evaporator/cooling coil
    serves as a heat exchanger from the products that are stored in the freeze/chill boxes liquid refrigerant is flowing through the evaporator coils
  9. type of refrigerant onboard















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