\ In a gas turbine plant a regenerator increases? - Dish De

In a gas turbine plant a regenerator increases?

This is a question our experts keep getting from time to time. Now, we have got the complete detailed explanation and answer for everyone, who is interested!

The regenerator increases the temperature of the air entering the burner, thus reducing the fuel-to-air ratio and increasing the adiabatic thermal efficiency.

Is gas turbine power plant regenerator increases?

It was found that adding regeneration to the simple gas turbine cycle results in an increase in the thermal efficiency of cycle. It was also found that including regeneration in gas turbine cycle results in an increase in the output power of the cycle, and it results in a decrease in the exhaust gas temperature.

Why is regenerator used in gas turbine power plant?

As an exhaust-gas heat exchanger, a regenerator recovers heat from the exhaust and uses it to preheat the compressed air before the compressed air enters the combustor. … Thus, regenerators can be used to increase the thermal efficiencies and power outputs of gas turbines.

What happens in gas turbine with regeneration?

Regeneration process involves the installation of a heat exchanger in the gas turbine cycle. … This heat exchanger is used to extract the heat from the exhaust gas . This exhaust gas is used to heat the compressed air. This compressed and pre-heated air then enters the combustors.

How can you increase the efficiency of a gas turbine?

Therefore, gas turbine efficiency can be improved by cooling the inlet air. This is especially effective in hot, dry climates. A significant benefit of turbine air inlet cooling is that it can reduce (or eliminate) fuel efficiency reduction by evaporative cooling the inlet air to the wet bulb temperature.

Intercooling, Regeneration, Reheating in Gas Turbine | Methods to Improve Thermal Efficiency

21 related questions found

What is the efficiency of a gas turbine?

Because of the power required to drive the compressor, energy conversion efficiency for a simple cycle gas turbine power plant is typically about 30 percent, with even the most efficient designs around 40 percent. A large amount of heat remains in the exhaust gas, which is around 600ºC as it leaves the turbine.

What is heat rate of gas turbine?

Heat rate is one measure of the efficiency of electrical generators/power plants that convert a fuel into heat and into electricity. The heat rate is the amount of energy used by an electrical generator/power plant to generate one kilowatthour (kWh) of electricity.

At which condition regeneration in gas turbine is more effective?

Mostly, regeneration is most effective at high maximum to minimum temperature ratios and lower pressure ratio s of the GT cycle [195,196]. …

What is the basic principle of regeneration?

What is the basic principle of regeneration? Explanation: In regeneration steam from condenser is circulated through turbine to increase steam temperature before it enters boiler. Explanation: Feedwater is preheated so as to decrease the fuel consumption which increases efficiency.

What is the principle of gas turbine?

The gas-turbine operates on the principle of the Brayton cycle, where compressed air is mixed with fuel, and burned under constant pressure conditions. The resulting hot gas is allowed to expand through a turbine to perform work.

How gas turbine is shut down?

Explanation: The only way to stop a running Gas turbine is by cutting off the fuel supply so that the various processes in the cycle are stopped.

Why intercooler is used in gas turbine?

The addition of intercoolers in gas turbine cycles reduces the compression work, and this is achieved by dividing the compression processes into two or more stages, and the exit air/gas from each stage is cooled by the intercooler/heat exchanger to the minimum cycle temperature.

Which of the following is not used in gas turbine power plant?

2. Which of the following is not used in gas turbine power plant? Explanation: Natural gas itself or mixture of natural gas and air is used as working medium in gas turbine power plant. Condenser is a device or arrangement used to condense low pressure steam already used by turbine.

Which is main component in gas turbine plant?

Explanation: The main component of a Gas turbine plant is Compressor.

Which fuel is used in gas turbine power plant Mcq?

A gas turbine power plant uses which fuel: Coal.

What is the effect of intercooling in gas turbine?

Gas Turbine Cycle with Inter-cooling

The cooling of air between two stages of compression is known as intercooling. This reduces the work of compression and increases the specific output of the plant with a decrease in the thermal efficiency.

Which of the following method is not use for regeneration?

Which of the following method is not used for regeneration? Explanation: Regeneration is achieved by either increasing field current, increasing armature speed, or by reducing supply voltage. Increasing supply voltage is not the method which is employed in regeneration process.

Which of the following can undergo regeneration?

Plants and some sea creatures, such as jellyfish, can replace missing parts by extensively remodeling their remaining tissues. Some animals such as lobsters, catfish, and lizards replace missing parts by first growing a specialized bud of cells, called a blastema.

What is the function of regenerator MCQS?

Answer: A regenerator recovers the waste heat from exhaust gases of the gas turbine. Majority of power plants use WHR (Waste heat recovery) cycle for improving the efficiency of the cycle. In gas power plants the waste heat from exhaust gases of turbine passes through the regenerator.

What is work ratio in gas turbine?

Work ratio: Work ratio in the gas turbine is defined as the ratio of net-work to the turbine work. The net-work in the turbine is given by Wturbine – Wcompressor, because the compressor is work consuming device therefore it consumes the work.

Which one of the following is correct in a gas turbine cycle with regeneration?

In the regeneration process, there is reduction in heat supplied to the gas but there is no effect on the turbine and compressor work. Therefore, the regeneration will not increase the work ratio in the turbine but the efficiency of the turbine increases in the regeneration process.

What is the maximum efficiency of an open cycle gas turbine?

The high temperature (and pressure) gas enters the turbine where it expands to ambient pressure and produces work. Features: • Gas-turbine is used in aircraft propulsion and electric power generation. High thermal efficiencies up to 44%.

What are ISO conditions for gas turbines?

The standard conditions used by the gas turbine industry are 59 F/15 C, 14.7 psia/1.013 bar and 60% relative humidity, which are established by the International Standards Organization (ISO) and frequently referred to as ISO conditions.

What are the factors affect a gas turbine plant performance?

A small increase in firing temperature has a significant effect on produced horsepower and on engine efficiency. Gas turbine site power is determined by elevation, temperature, inlet conditions, outlet conditions, humidity, and fuel conditions.