High pressure feed water heater

A high-pressure feedwater heater is a type of heat exchanger used in steam power plants to preheat the feedwater supplied to the boiler. The feedwater heater receives high-pressure water from the turbine condenser and transfers the heat to the feedwater coming from the pump before it enters the boiler.

The preheating process helps to improve the overall efficiency of the power plant by reducing the amount of heat that is required to raise the temperature of the feedwater to the boiler’s operating temperature. This, in turn, helps to save fuel and reduce the emissions of greenhouse gases.

High-pressure feedwater heaters are typically constructed of stainless steel or other corrosion-resistant alloys to withstand the high-pressure and high-temperature conditions found in steam power plants. They are designed to handle large volumes of water and transfer heat efficiently while minimizing pressure drop and energy losses.

Overall, high-pressure feedwater heaters play an important role in the operation of steam power plants and are essential for improving their overall efficiency and reducing their environmental impact.

How drip control in feed water heater?

Drip control in a feedwater heater is important for maintaining the efficiency and performance of the heater. Drip is the term used to describe the accumulation of liquid droplets that form on the inside of the heater tubes due to condensation. These droplets can eventually accumulate and fall into the lower parts of the heater, reducing the efficiency of the heat transfer process and potentially causing damage to downstream equipment.

There are several methods for controlling drip in a feedwater heater, including the following:

1. Baffles: Baffles are plates or screens placed inside the heater that direct the flow of steam and water and prevent droplets from forming and accumulating on the tube surfaces.

2. Drains: Drains are located at the bottom of the heater and are used to remove accumulated droplets and prevent them from being carried downstream.

3. Separators: Separators are used to remove entrained moisture from the steam flow before it enters the heater. This helps to reduce the amount of moisture that can condense and form droplets on the tube surfaces.

4. Insulation: Proper insulation can help to reduce the temperature differential between the steam and water sides of the heater, minimizing the potential for condensation and droplet formation.

Overall, controlling drip is an important aspect of feedwater heater design and operation, and the specific method used will depend on the design and operating conditions of the particular heater. Proper drip control can help to improve the efficiency and reliability of the power plant and reduce maintenance costs over time.