The sulphur oxides emission is due to the presence of sulphur compound in the marine fuels used in marine engines on board vessel. Better the grade, lower will be the sulphur content as it is removed by refining of the fuel.
With the help of monitoring systems, the diesel performance of the engine can be taken easily and within no time. The new technology provides two types of monitoring systems
On the basis of their operation, marine scrubbers can be classified into Wet and Dry scrubbers. Dry scrubbers employ solid lime as the alkaline scrubbing material which removes sulphur dioxide from exhaust gasses
Scrubbers are increasingly being fitted to newbuildings but the majority now in operation have been retrofits. The time for a retrofit is currently more than a typical scheduled drydocking meaning that extra lost earning days add to the capital outlay.
In a scrubber, the sulphur oxides in the exhaust are passed through a water stream reacting with it to form sulphuric acid and are removed from the exhaust gas which then passes out of the system.
This system uses seawater as the scrubbing and neutralising medium, no other chemicals are required for desulphurization of gasses.
Scrubbers or Exhaust Gas Cleaning Systems (EGCS) are used to remove particulate matter and harmful components, such as sulphur oxides (SOx) and nitrogen oxides (NOx) from the exhaust gasses generated as a result of combustion processes in marine engines, to implement pollution control.
There are concerns associated with both of the two most popular options to comply with IMO 2020; use of compliant fuels and SOx Exhaust Gas Cleaning Systems (EGCS), often referred to as scrubbers.
Preliminary Heat Exchanger Design Sizes Heat Exchangers using an Estimated Overall Heat Transfer Coefficient
Air conditioners work on the principle of heat transfer and a basic air conditioner includes a heat sink, heat pump, and an electric motor.