الفهرس 
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Abstract
The main objective of this thesis is to supply both electrical power and potable water
through a proposed desalination supply vessel. Fresh water produced will be used for
drinking, cleaning and washing purposes contributing to the high demand consumption
particularly on board ships. The main idea for proposed vessel is to use the renewable
energy to produce both power and fresh water which is the main problem. The fresh
water generator incorporated in the ship propulsion plant will result in better exploiting
the waste heat carried out by cooling water or scavenging air and hence the plant overall
efficiency will increase.
Frequently a sufficient potable water supply in arid coastal regions can only be ensured
by operating seawater desalination plants. If consumers of potable water in such regions
are located far away from each other, either many small or few large land-based
seawater desalination plants with correspondingly extensive distribution networks are
needed, both of which require large investments. For these and other applications, a
mobile floating seawater desalination plant installed on a ship can offer a useful and
economic alternative to conventional land-based plants. The mobile seawater
desalination plant can serve one or several consumers. The potable water produced on
the ship is pumped into storage tanks on the coast via pipelines and is then pumped into
the distribution networks supplying the potable water to the consumers.
Substantial work has been carried out to date on utilizing waste heat from various
processes for desalination; numerous systems involving the utilization of waste heat for
desalination of seawater have been proposed and implemented during the last two
decades. Defining and mentioning the various sources of waste heat could lead to a
better understanding of the utilization of waste heat. The desalination supply vessel can
offer a useful and economic alternative to conventional desalination plants for the Saudi
areas applications.
So, in this thesis the possibilities of using renewable energy and
fuel cell in order to reach to the optimum use of energy on board
ships are discussed. This principle has been applied in floating
desalination ships as a case study of using renewable energy in
marine field.