- Decreasing the condenser pressure. The effect of lowering the condenser pressure on the Rankine cycle efficiency is illustrated on a T-s diagram on the left.
- Superheating the steam to a high temperature.
- Increasing the boiler pressure.
What four processes make up the simple ideal Rankine cycle?
What four processes make up the simple ideal Rankine cycle? The four processes that make up the simple ideal cycle are (1) Isentropic compression in a pump,
(2) P = constant heat addition in a boiler, (3) Isentropic expansion in a turbine, and (4) P = constant heat rejection in a condenser.
What is the efficiency of a Rankine cycle?
In modern nuclear power plants, which operate the Rankine cycle, the overall thermal efficiency is
about one-third (33%)
, so 3000 MWth of thermal power from the fission reaction is needed to generate 1000 MWe of electrical power.
What are the factors affecting the efficiency of Rankine cycle?
There are many factors affecting the Organic Rankine Cycle’s (ORC) performance, such as
working fluid selection, evaporator and condenser temperatures
, pinch point temperature differences (the minimum temperature difference between refrigerant and the waste heat source (PPTD
evap
) or cooling water (PPTD
con
)), …
What are the main 4 components and the 4 main processes of the Rankine cycle?
A combined heat and power boiler is equipped with the Rankine cycle to produce electricity. This cycle is composed of four key parts:
the generation of high-pressure steam, a turbine, a condenser, and a pump
. Steam is generated in the boiler and then transferred to the turbine.
How can you increase the efficiency of a Rankine cycle?
- Decreasing the condenser pressure. The effect of lowering the condenser pressure on the Rankine cycle efficiency is illustrated on a T-s diagram on the left. …
- Superheating the steam to a high temperature. …
- Increasing the boiler pressure.
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 are the four process of Rankine Cycle?
| Related Links | What Are The Group 3 Cations What Are The Hazards Of Sodium Hypochlorite |
|---|
What is critical point in Rankine Cycle?
The critical point is
where the temper- ature and pressure are such that the fluid is no longer classified exclusive- ly as liquid or gas
. It is thought of as a fluid above the critical point. The criti- cal point for water is slightly above 3200 psi.
What pump is used in Rankine Cycle?
The present paper focuses on the comparative experimental operating characteristics of working fluid pumps used in the organic Rankine cycle (ORC) system with R245fa, including
multistage centrifugal pump
, hydraulic diaphragm metering pump, and roto-jet pump.
Why pump is used in Rankine cycle?
The Rankine cycle system consists of a pump, boiler, turbine, and condenser. The
pump delivers liquid water to the boiler
. The boiler heated by the solar heat converts water to superheated steam. This steam is used to run the turbine which powers the generator.
What are the factors affecting thermal efficiency?
The thermal efficiency of a heat engine is expressed as a product of the Carnot efficiency,
the external irreversibility factor and the internal irreversibility factor
, by which the three factors that affect the thermal efficiency can be clearly distinguished, and the influences of the external and internal …
What is work ratio in Rankine cycle?
The practical Rankine cycle is shown as
1-2 -3-4 -1
. In the actual turbine, the work delivered is less than the isentropic turbine. … Isentropic efficiency of turbine (h
T
) is defined as the ratio of Work delivered by actual turbine to Work delivered by an isentropic turbine .
Which fluid is used in Carnot cycle?
In a carnot cycle, what is the working fluid? Explanation: As Carnot cycle is an ideal cycle, so the working fluid is an
ideal gas
. 4. The isothermal process of a carnot cycle needs very __________ motion of the piston to maintain constant temperature.
What is difference between Rankine and actual Rankine cycle?
| Rankine Cycle Representation is as follows on P-v and T-s diagrams: | Ideal Rankine Cycle 1-2′-b-3′-4′-1 | Actual Rankine Cycle 1-2-b-3-4-1 |
|---|
How many processs are there in Rankine cycle?
The
four processes
in the Rankine cycle
There are four processes in the Rankine cycle. The states are identified by numbers (in brown) in the T–s diagram. Process 1–2: The working fluid is pumped from low to high pressure. As the fluid is a liquid at this stage, the pump requires little input energy.
