× MCQ Videos Forum Contact Us Basic Electrical Circuit Theories Electrical Laws Materials Batteries Illumination Generation Transmission Distribution Switchgear Protection Measurement Control System Utilities Safety Transformer Induction Motor DC Motor Synchronous Motor Special Motor Generator Electrical Drives Electronics Devices Power Electronics Digital Electronics

Duplex Feed Water Pump

We use water to generate steam in the thermal power plant. We supply water to the boiler and the boiler converts this water into hot water then to steam. This input water to the boiler is known as feed water. When feedwater gets supplied to the steam drum of the boiler, feedwater pump is used to increase the pressure of the water. The feedwater pump feeds water to the boiler and this feedwater may be a fresh supply of water or reuse of water after the process of conduction. We measure the capacity of feed water pump in horsepower and we use an electric motor to drive this pump. The capacity of an electric motor (kW rating) is higher than the capacity of a pump (HP rating). duplex feed water pump

According to construction, two types of feedwater pump are available, simplex feed water pump and duplex feed water pump. A simplex feed water pump has one set of steam and water cylinders and duplex feed water pump has two sets of steam and water cylinders. Both sets are not physically connected but the working of both pumps is dependent on each other. Both pumps have separate rod (shaft) and steam valves. Operation of first pump’s steam valve depends on the movement of the second pump’s piston rod and the operation of second pump’s steam valve depends on the movement of the first pump’s piston. This pump can start from any position of the rod and steam valve and this type of construction make pump self-starting and there are no dead-spot in operation, this is the main advantage of duplex feed water pump.

New Articles Diagram of Gas Turbine PlantDiagram of Thermal PlantCalorific Values of Fuel Related Articles Diagram of Thermal PlantSteam BoilerFire Tube BoilerWater Tube BoilerSteam Boiler FunctionMethods of Firing Steam BoilerPulverized Fuel FiringSuperheated SteamEconomiserDuplex Feed Water PumpDeaerating Heater | DeaeratorNatural Draught More Related Articles Electric GenerationEconomics of Power GenerationWind Energy GenerationThermodynamicsPower Plant Fire Protection SystemCost of Electrical Energy Articles Categories MCQ Videos Forum Contact Us Basic Electrical Circuit Theories Electrical Laws Materials Batteries Illumination Generation Transmission Distribution Switchgear Protection Measurement Control System Utilities Safety Transformer Induction Motor DC Motor Synchronous Motor Special Motor Generator Electrical Drives Electronics Devices Power Electronics Digital Electronics