IP Core/Edge Networks
Core network and backbone network typically refer to the high capacity communication facilities that connect primary nodes. Core/backbone network provides path for the exchange of information between different sub-networks. Edge…
CONNECTING DEVICES
The five categories contain devices which can be defined as 1. Those which operate below the physical layer such as a passive hub. 2. Those which operate at the physical…
BLUETOOTH
Bluetooth is a wireless LAN technology designed to connect devices of different functions such as telephones, notebooks, computers (desktop and laptop), cameras, printers, coffee makers, and so on. A Bluetooth…
What To Do When Black Smoke Is Coming Out Of Ship’s Funnel At Port?
If you work in a ship’s engine room, you must have received a call at least once from the bridge about port workers/authority complaining of black smoke coming out of…
Hydrophore System In Ship
A hydrophore system is used on a ship to maintain constant water pressure to all parts of a ship ( varying over different lengths and heights ) at all times…
Fresh Water Generator
Fresh water generator, one of the important machinery on board a ship, is something that cannot be done without. Fresh water produced from fresh water generator is used for drinking,…
Boiler efficiency and load factor
Like any other devices, the boiler energy efficiency is a factor of its load factor. Figure (i) and also Figure (iii) show typical of such efficiencies. Figure (iii) – Impact…
Excessive combustion air
Fig (ii): Boiler efficiency as a function of CO2 level in the exhaust gas In order to burn the fuel, air needs to be supplied to the boiler. The excess…
Optimum hot well temperature and blow-down levels
There is a hot well (see Figure (v)) that collects all the condensates from steam system end-users plus where water treatment and cleaning may take place. It is from hot-well…
Boiler energy efficiency measures – shipboard good practices
Formation of marine boiler : A boiler in one form or another will be found on every type of ship. Where the main machinery is steam powered, one or more large…
