feed water heater for Conventional power plants for preheating boiler feed water. The heat source is the steam exhausted by the turbine to increase the thermodynamic efficiency of the cycle.

What are the various advantages of using multiple feedwater heaters?

Reduce the fuel required for combustion by increasing the initial water temperature of the boiler; Reduced heat loss to the condenser; Minimized thermal transients within the boiler; Reduced emissions due to increased heat rate and reduced fuel usage.

Why use at least one open heater?

Why use at least one open heater? explain: Open heater used as deaerator.

What are the implications of using feedwater heating in a steam power plant?

go through Increase feed water temperature, feedwater heaters improve the overall efficiency of steam power plants. Feedwater heaters raise the feedwater temperature to near boiling point. Therefore, the water in the boiler is easily converted into steam, increasing the efficiency of the plant.

Used in which of the following recirculating feedwater heaters?

Rankine cycle Closed feedwater heaters have their advantages and are most commonly used in all modern power plants. The closed feed water heater adopts the indirect heat transfer method, that is, the steam extraction or extraction of the steam turbine indirectly transfers the heat to the feed water in the shell and tube heat exchanger.

Purpose of Feed Water Heating || Open Feed Water Heater vs Closed Feed Water Heater || in Hindi

19 related questions found

What is the function of the feed water heater?

Feedwater heaters are components of power plants for preheating water for delivery to steam boilers. Preheating the feed water reduces the irreversibility involved in steam generation, thus increasing the thermodynamic efficiency of the system.

Which equipment uses the heat of steam to heat feed water?

superheater: A superheater is a device that converts saturated steam or wet steam into superheated steam or dry steam. Superheated steam is used in processes such as steam turbines, steam engines and steam reforming for power generation.

Which of the following is not an advantage of an open heater?

Which of the following is not an advantage of an open heater? explain: The downside is that each heater requires a pump to handle the large feedwater flow.

What is one of the advantages of a reheat cycle?

Advantages: The advantage of using a reheat cycle is that higher thermal efficiencyreduced feed pump power, smaller condensers, smaller boilers, longer turbine life and less fuel handling and combustion requirements.

Which statement is true about open feedwater heaters?

Which of the following is true for an open heater? explain: Open heater with high heat transfer capability.7.

What is the basic principle of regeneration?

What is the basic principle of regeneration?Explanation: in The regenerated steam from the condenser is circulated through the turbine to increase the steam temperature before entering the boiler. Description: Feed water is preheated to reduce fuel consumption and improve efficiency.

Are open or closed feedwater heaters more efficient?

Heat transfer in enclosed feedwater heaters less effective Because the two streams are not allowed to touch directly. … open feedwater heaters are simple and inexpensive, and have good heat transfer characteristics. However, for each heater, a pump is required to handle the feed water.

How does a feedwater heater work?

water heater use Steam is extracted from the turbine to increase the temperature of the water going to the boiler. Water first passes through a low pressure heater to a deaerator where excess oxygen is removed. The feed water then enters a high pressure heater where it is further heated and pressurized.

What is a water heater for?

One feed water heater Yes used Preheating in conventional power plants Boiler feed water. origin of hot is the steam exhausted from the turbine in order to improve the thermodynamic efficiency of the cycle.

What is the impact of adding feedwater heaters to power plants?

The higher the feedwater temperature, the less fuel is required to generate the steam used to generate electricity in the steam turbine.However, steam is drawn from different locations in the turbine to heat the feedwater, which increases the Factory heat rate.

What is the principle of deaerator?

The principle of thermal degassing is The solubility of gases in water decreases as the water temperature increases and approaches the boiling point.. Degassing is accomplished by spraying feed water into the chamber to increase its surface area and may involve flowing through multiple layers of trays.

What are the disadvantages of a reheat cycle?

Disadvantages of reheating: 1- Reheating requires more maintenance. 2- The increase in thermal efficiency is not significant compared to the expenditure incurred by reheating.

Why use system reheat?

reheat Allows for more heat transfer at temperatures close to cycle peaks (i.e. increased thermal efficiency). This requires the addition of another type of heat exchanger, called a reheater. The use of reheaters involves separate turbines, ie, the use of multi-stage turbines with reheaters.

Which is the difference between Brayton cycle and Rankine cycle?

Both the Rankine cycle and the Brayton cycle are types of thermodynamic cycles.The key difference between Rankine cycle and Brayton cycle is that Rankine cycle is a vapor cyclewhile the Brayton cycle is a cycle between liquid and gas phases.

What is a low pressure heater?

Low pressure heater is Designed for regenerative heating of district water in regeneration systems The steam turbine is cooled by cooling and condensing the steam absorbed from the intermediate stages of the turboset.

Why do we use a fuel saver?

An energy saver is a Mechanisms to reduce energy consumption. Economizers recover energy generated within the system or use ambient temperature differences to increase efficiency.

Which of the following is an advantage of a reheat cycle?

The main advantage of the reheat cycle is that Increase the dryness of the steam at the condenser inlet Thus higher boiler pressures can be used. It also increases the network output, which reduces the steam mass flow required for the same power output.

What is the efficiency of the Rankine cycle?

In a modern nuclear power plant operating the Rankine cycle, the total thermal efficiency is About a third (33%)thus requiring 3000 MWth of thermal energy from the fission reaction to generate 1000 MWe of electricity.

Which one is used for boilers to improve efficiency?

As condensate returns to the boiler, from Boiler blowdown Can improve boiler efficiency. Blowdown valves are used to remove boiler water containing soluble and insoluble solids. It helps reduce the level of dissolved solids in boiler water to prevent boiler scaling.

Which device uses the waste heat of flue gas to heat feed water?

exist steamerwhich is a heat exchanger unit used to heat fluids or recover waste heat from combustion products (i.e. flue gases in thermal power plants) before releasing it through a stack.