What is the difference between Brayton cycle and Carnot cycle?

The efficiency of Carnot and Stirling cycles depends only on the ratio of the temperature extremes whereas the efficiency of Otto and Brayton cycles depends only on the compression ratio. This is an important factor in understanding how a Diesel cycle can be made to be more efficient than an Otto cycle.

What is the another name for Joule cycle?

Reversed Joule cycle is also known as Reversed Brayton cycle or Bell Coleman cycle. The working fluid of the Bell Coleman refrigeration cycle is air. This system of refrigeration is used for Air-craft refrigeration and it has lightweight.

What is meant by Joule cycle?

1. (Thermodynamics) The cycle for the air engine proposed by Joule. In it air is taken by a pump from a cold chamber and compressed adiabatically until its pressure is eqal to that of the air in a hot chamber, into which it is then delivered, thereby displacing an equal amount of hot air into the engine cylinder.

What is Brayton cycle and Otto cycle?

All three cycles are suitable for internal combustion engines and therefore engine-driven power generation applications. Otto and Diesel cycles are operated by a piston-cylinder mechanism while the Brayton cycle drives a gas turbine. Hence, in this chapter, the Brayton cycle and its derivatives are explained in detail.

What is the difference between a Rankine cycle?

It gives highest efficiency between given temperature difference. As I told Rankine cycle is an ideal vapor power generation cycle used in steam turbine….Difference between Carnot Cycle and Rankine cycle:

What is the difference between the Brayton cycle and the Rankine cycle Mcq?

Explanation: The difference between a Rankine cycle & a Brayton cycle is that the working fluid in a Brayton cycle doesn’t undergo phase change while it does in Rankine cycle.

What is the difference between Otto and diesel cycle?

Otto cycle is used for petrol or spark ignition engine while diesel cycle is used for diesel or compression ignition engine. The main difference between Otto cycle and Diesel cycle is that in Otto cycle heat addition takes place at constant volume and in diesel cycle heat addition takes places at constant pressure.

What is the difference between Brayton cycle and Rankine cycle Mcq?

What is the Brayton cycle used for?

The Brayton cycle is a thermodynamic cycle used in some heat engines. Notably, it is used for gas turbine engines and some jet engines. The cycle consists of compressing ambient air, mixing the air with fuel, then igniting the mixture, which expands, doing work.

What is Brayton cycle efficiency?

Ideal Brayton cycle efficiency. This pressure ratio for peak cycle efficiency in real gas turbines is high to minimize the temperature for heat rejection (T4) and to increase the mean temperature of heat addition (T2+T3)/2. Exergy remaining in the exhaust is lost to the cycle.

Is Joule cycle is reversible cycle?

2. The cycle is not thermodynamically reversible, because there is no re-generator to provide a constant temperature during heating and cooling at constant pressure. 3. The reversed Joule cycle is known as Bell-coleman cycle, and is applied to refrigerators, where air is used as a refrigerant.

What is the difference between jet-propulsion cycle and Brayton cycle?

Jet-propulsion cycle differs from the Brayton cycle in the gas expansion process. In Brayton cycle, gases are expanded to ambient conditions, but in jet-propulsion cycle, the gases are expanded to a pressure such that the power produced is only enough to drive the compressor and the auxiliary equipment.

What is a closed Brayton cycle used for?

The closed Brayton cycle is used, for example, in closed-cycle gas turbine and high-temperature gas cooled reactors. A Brayton cycle that is driven in reverse direction is known as the reverse Brayton cycle.

What is joule’s cycle?

Joule’s cycle: The cycle for the air engine proposed by Joule. In it air is taken by a pump from a cold chamber and compressed adiabatically until its pressure is equal to that of the air in a hot chamber, into which it is then delivered, thereby displacing an equal amount of hot air into the engine cylind…

What is the net heat added in an ideal Brayton cycle?

In an open ideal Brayton cycle, the compressed air then runs through a combustion chamber, where fuel is burned and air or another medium is heated (2 → 3). It is a constant-pressure process, since the chamber is open to flow in and out. The net heat added is given by Qadd = H3 – H2