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A

ABS

American Bureau Shipping

AC

alternative current

AMOS

autonomous marine operation and systems

B

Brine

concentrated seawater remaining after evaporation of water content.

BV

Bureau Veritas

C

Calorifier

water tank fitted with a coil, or coils (steam, thermal oil or electrical), that can be heated in order to heat the water.

CCW

counter-clockwise

Chemicals injection unit

unit for injecting a scale inhibitor that prevents seawater-derived scale from occurring on the heating surface of the evaporator or membranes.

CIP

clean-in-place

Condenser

heat exchanger that condenses vapor into distillate.

CPU

central processing unit

CW

clockwise / cold water

D

Deflector

plate that separates seawater particles being transported together with the vapor generated in the evaporator.

Demister

wire mesh that separates the brine mist that is being transferred together with the vapor generated in the evaporator.

DIST

distill

Distillate

wire mesh that separates the brine mist that is being transferred together with the vapor generated in the evaporator.

Distillate pump

pump that transfers the distillate produced in the FWG with plate to FW TK.

Distillation

process in which water is boiled until it evaporates and then vapor condenses, leaving behind impurities with different boiling points, as a result of seawater distillation produces distillate

DNV GL

Det Norske Veritas and Germanischer Lloyd

Dolomite

name of sedimentary carbonate rock and a mineral, both composed of calcium magnesium carbonate CaMg(CO3)2 found in crystals.

DRNK

drinking

E

ECR

engine control room

EDTA

Ethylendiaminetetraacetic acid

Ejector pump

pump that feeds driving water to the water ejector of the FWG.

ER

engine room

Evaporator

heat exchanger that evaporates seawater into vapor.

F

Filtration

physical separation process in which solid particles in a liquid or gaseous fluid are removed by the use of filter medium that has a complex structure and permits the fluid to pass through but retains the solid particles.

FO

fuel oil

Fresh water generator

plant which produces distillate or fresh water from seawater.

FW

freshwater

FWG

freshwater generator

H

High-pressure booster

hydraulic turbocharger which capture pressure from a secondary flow to boost the primary high-pressure feed flow.

HPB

hydraulic pressure booster

HW

hot water

Hydrophore

instrument vessel of domestic and potable water system used on shipboard to maintain the water pressure always provided to all areas of the ship without continuous pump operation.

I

ILO

International Labour Organization

IMO

International Maritime Organization

ISO

International Organization for Standardization

L

LED

light-emitting diode

LO

lube oil

LR

Lloyd Register

M

ME

main engine

Membrane

thin layer of semi-permeable material that is used for solute separation

Mineralizer

device which uses on board ships to producing potable water with suitable hardness, PH value and mineral components.

MLC

Maritime Labour Convention

MSDS

material safety data sheet

Multimedia filter

device containing several different filtration media (e.g., sand, garnet, gravel, aqua volcano, etc) and applies for instance in domestic and potable system for water filtration.

P

PCB

printed circuit board

PH

potential of Hydrogen

PLC

programmable logistic controller

Pressure differential

difference between make pressure and break pressure.

Pressure exchanger

device which transfers hydraulic energy from a high-pressure fluid flow to a low-pressure fluid flow.

Pressure range setting

pressure range within which the unit will give a signal (contact changeover).

Pressure switch

device that operates an electrical contact when a pre-set fluid pressure has been reached on its input.

PS

port side

PW

potable water

R

Re-hardening filter

device which uses on board ships to remove solid particles and contaminants and to adjust suitable PH value of desalinated water.

Reverse osmosis

water purification process commonly used in freshwater generation or boiler feed-water desalination and relies on the principle that when solutions of differing concentrations are separated by a semi-permeable membrane.

RO


S

Salinity

amount of dissolved salts that are present in water.

Solvate

aggregate that consists of a solute ion or molecule with one or more solvent molecules.

Steam injector

system that adds vapor to fresh water to generate hot water.

Sterilization

process that removes or deactivates microorganisms such as bacteria and other biological agents present in or on a specific surface, object, or fluid.

Sterilizer

device which makes sterilization by certain method (thermal, radiation, chemical etc.) and applies for instance in domestic and potable water ship system for UV sterilization).

STRBS

starboard side

SW

sea water

T

TDS

total dissolved solids

Temperature regulating valve

device which maintain the temperature of a certain process at pre-set value.

Thermostat

device which responds to temperature changes and may act as a valve in fluid circuits or as a switch in electric circuits.

TK

tank

TRV


U

Ultraviolet

electromagnetic radiation with a wavelength shorter than that of visible light, but longer than X-rays and uses onboard ship for sterilization action of drinking water.

UV


V

Variable frequency drive

type of motor drive used in electro-mechanical drive systems to provide effective control AC motor speed and torque by manipulating voltage and frequency.

VFD


W

Water Ejector

device that evacuates the evaporator and discharges cooling seawater and brine overboard.

WHO

World Health Organization


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