Table of Contents
- 1 What are the advantage and disadvantage of a gas turbine when used as the main propulsion of a ship?
- 2 Which is the advantage of closed cycle gas turbine plant?
- 3 What are the disadvantages of closed cycle gas turbine over open cycle gas turbine?
- 4 What are the main differences between open and closed gas turbine cycles?
- 5 What are the advantages of open cycle gas turbine?
- 6 What are the advantages of closed cycle over open cycle?
- 7 What are the advantages and disadvantages of gas turbine power plant?
- 8 What is a closed cycle gas turbine?
- 9 What happens to air in a gas turbine?
What are the advantage and disadvantage of a gas turbine when used as the main propulsion of a ship?
Thus simple cycle efficiency is achieved with high pressure ratios. Combined cycle efficiency is obtained with more modest pressure ratios and greater firing temperatures. Fuels One further advantage of gas turbines is their fuel flexibility….Power Generation/Gas Turbine Power.
| Advantages | Disadvantages |
|---|---|
| Can be started quickly | . |
| No stand-by losses | . |
Which is the advantage of closed cycle gas turbine plant?
The advantage of closed-cycle gas turbines compared to open-cycle gas turbines is that they allow higher efficiencies at lower temperatures and have a better part load behavior. They allow an operation at higher pressure and the used gases have better thermodynamic properties.
What are the disadvantages of closed cycle gas turbine over open cycle gas turbine?
Disadvantages. As the whole system work under high pressure with a working fluid (medium), it increases the cost. It requires a large air heater and it is not enough when the combustion chamber is used in the open cycle. Not used in aeronautical engines because this type of gas turbine uses cooling water.
What is the main disadvantage of gas turbine?
The main disadvantage of gas turbines is that, compared to a reciprocating engine of the same size, they are expensive. Because they spin at such high speeds and because of the high operating temperatures, designing and manufacturing gas turbines is a tough problem from both the engineering and materials standpoint.
What are the three disadvantages of the electrical propulsion system?
Disadvantages include a higher initial cost when compared to propulsion systems based on internal combustion engines, increased energy conversion loss from fuel to propulsion, and a larger system volume due to the large number of component parts.
What are the main differences between open and closed gas turbine cycles?
The basic difference between them is the circulation of the working fluid. In the closed cycle gas turbine the same working fluid is circulated again and again within the turbine but in the open cycle gas turbine the working fluid i.e. air is replaced again and again while flowing through the gas turbine.
What are the advantages of open cycle gas turbine?
The advantages of open cycle gas turbine include the following.
- This gas turbine working doesn’t depend on the pressure of the atmospheric, so therefore any type of force can be used so that specific plant output can be improved.
- The gas used in this turbine can be any type.
- Simplicity, less weight, and cost.
What are the advantages of closed cycle over open cycle?
Advantages of closed cycle gas turbine over open cycle gas turbine: (i) It has higher thermal efficiency for the same minimum and maximum temperature limits and for the same pressure ratio. (ii) Since the heating is external, any kind of fuel even solid fuel having low calorific value may be used.
What type of gas turbine is used in aircraft?
Four types of gas turbine engines are used to propel and power aircraft. They are the turbojet, turbofan, turboprop, and turboshaft.
What are the advantages of gas turbines?
Major benefits of gas turbines
- #1. Lower operational cost.
- #2. Efficient and durable.
- #3. Facilitates distributed power generation.
- #4. Environmentally-friendly.
- #5. High operational speed and low lubrication cost.
What are the advantages and disadvantages of gas turbine power plant?
Advantages and disadvantages of Gas turbine power plant . Advantages of Gas Turbine Power Plant . 1. They are small in size, weigh less and have low initial cost per unit output. 2. They are easy to install within short periods. 3. They are quick-starting and smooth running. 4.
What is a closed cycle gas turbine?
Now the air is cooled into the condenser at constant pressure and again sends to compressor. This process is run continuously which generate power. The air is again used into this system and does not exhaust into atmosphere, so it is known as the closed cycle gas turbine.
What happens to air in a gas turbine?
Finally this high temperature air sends to gas turbine where it expands issentropically and rotates the turbine. At the end after air is fully expanded into combustion chamber it is exhausted into the atmosphere and new air sucked by the compressor. This process runs continuously to develop the power.
What is the efficiency of a simple cycle gas turbine?
The best heavy-duty gas turbines in simple cycle have an efficiency of 42\% (aeroderivatives better then combined cycle designed GT). The limit on the gas turbines is the temperature capability of the turbine inlet section (front turbine rows).