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ricky agarwal
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energy balance for closed feed water heaters
A feed water heater is a device used in power plants to heat up the condensed water from the condenser before it enters the boiler. This preheating process helps to improve the efficiency of the power plant by reducing the amount of fuel needed to heat the water to its boiling point.
A closed system refers to a system where no matter can enter or leave, but energy can be exchanged with the surroundings. In the case of a feed water heater, the closed system refers to the process of heating the condensed water and returning it to the boiler without any loss of water or exchange of substances.
An energy balance is important because it helps to ensure that the amount of energy going into the feed water heater is equal to the amount of energy leaving it. This is necessary to maintain the proper functioning of the system and optimize its efficiency.
The energy balance for a closed system feed water heater is calculated by taking into account the energy input (from the steam used to heat the water) and the energy output (from the preheated water leaving the feed water heater). The difference between the two values is the energy gained by the water.
The energy balance in a closed system feed water heater can be affected by several factors, such as the temperature and pressure of the steam, the temperature and flow rate of the condensed water, and any heat losses due to insulation or leakage. Other factors that can affect the energy balance include the quality of the heat exchanger and any changes in the operating conditions of the power plant.