What is meant by open cycle and closed cycle?
What is meant by open cycle and closed cycle?
In closed cycle gas turbine, the gas that comes out from the gas turbine passes into the cooling chamber. In an open cycle, the gases coming out from the gas turbine is exhausted in the atmosphere.
What is an open cycle gas turbine?
open-cycle gas turbine. Definition English: A gas turbine prime mover in which air is compressed in the compressor element, fuel is injected and burned in the combustor, and the hot products are expanded in the turbine element and exhausted to the atmosphere.
What do you mean by closed cycle gas turbine?
A closed cycle gas turbine is a turbine in which the temperature and pressure of the atmospheric air that enter the compressor are increased [21]. The compressed air at high pressure and temperature enters the heat exchanger, where it is heated by an external source.
What is meant by open cycle?
[¦ō·pən ¦sī·kəl] (thermodynamics) A thermodynamic cycle in which new mass enters the boundaries of the system and spent exhaust leaves it; the automotive engine and the gas turbine illustrate this process.
What is a closed cycle?
noun. engineering a heat engine in which the working substance is continuously circulated and does not need replenishment.
What is the difference between open cycle and closed cycle MHD?
A closed-cycle system can provide more useful power conversion at lower temperatures (around 1900 K as compared to 2500 K for open cycle system). However, its use is still a distant dream. The heat exchanger design is one of the difficulties because the heat exchanger works up to the highest temperature of the gas.
What are the principles of operations of open and closed gas turbines?
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.
What is the difference between open cycle and closed cycle OTEC?
The Difference Between Open Cycle and Closed Cycle Gas Turbine is, in Open Cycle Gas Turbine the working Fluid changes again and again and in Closed Cycle Gas Turbine the Working Fluid does not change it circulate continuously.
What is closed cycle OTEC?
An OTEC system in which working fluid with a low-boiling point is circulated. In closed-cycle ocean thermal energy conversion, a working fluid with a low-boiling point, such as ammonia or propane, is circulated.
Which gas is used in open cycle MHD?
In this system, helium gas seeded with Cesium is heated to a very high temperature in a nuclear reactor. The hot helium gas is passed through a nozzle to increase its velocity and then supplied to MHD duct to produce DC power. Here, some part of the internal energy of the gas is directly converted into DC power.
What is closed cycle MHD system?
Closed Cycle MHD System As the name suggests the working fluid in a closed cycle MHD is circulated in a closed loop. Hence, in this case inert gas or liquid metal is used as the working fluid to transfer the heat.
What are the special advantages of closed cycle gas turbine plant?
Answer: 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.