What does a condenser do in a Rankine cycle?

What does a condenser do in a Rankine cycle?

The boiler heated by the solar heat converts water to superheated steam. This steam is used to run the turbine which powers the generator. Steam leaves the turbine and becomes cooled to liquid state in the condenser. Then the liquid is pressurized by the pump and goes back to the boiler.

What are the effects of condenser pressure on the Rankine cycle?

Lowering the condenser pressure will increase the area enclosed by the cycle on a T-s diagram which indicates that the net work will increase. Thus, the thermal efficiency of the cycle will be increased.

How can the average temperature during heat rejection process of a Rankine cycle be decreased?

Basic idea: Increase the average temperature at which heat is transferred to the working fluid in the boiler, or decrease the average temperature at which heat is rejected from the working fluid in the condenser. Lowering the operating pressure of the condenser lowers the temperature at which heat is rejected.

During which of the following process heat is added in Rankine cycle?

The Rankine cycle operates in the following steps: 1-2-3 Isobaric Heat Transfer. High pressure liquid enters the boiler from the feed pump (1) and is heated to the saturation temperature (2). Further addition of energy causes evaporation of the liquid until it is fully converted to saturated steam (3).

During which one of the processes heat is rejected in Rankine Vapour cycle?

Owing to the fact that heat rejection in a Rankine cycle is via condensation from a gas to a liquid, heat rejection returns the working fluid to a subcritical state. Cycles in which the working fluid remains in the supercritical state during heat rejection would be possible with a Brayton cycle.

In what component of Rankine cycle does the constant pressure heat rejection happen?

Process 4–1: The wet vapour then enters a condenser, where it is condensed at a constant pressure to become a saturated liquid. Process 4-1 is constant pressure heat rejection in condenser.

What is actually inlet temperature in Rankine cycle?

What is the actual turbine inlet temperature in Rankine cycle? Explanation: The TIT(Turbine Inlet Temperature) is of the range 500-570C.

What is the temperature during the heat rejection process?

Air cooled condensers normally requires between 125°F to 130°F condensing temperature to reject heat to a 100° ambient, while a water cooled condenser can operate at 105°F condensing temperature and reject its heat to a 95°F water stream.

What processes are in Rankine cycle?

Explanation: Working fluid in Rankine cycle undergoes 4 processes, expansion in turbine, heat addition in Boiler, heat rejection in Condenser and compression in pump.

What is Rankine cycle process?

The ideal Rankine cycle consists of the following four processes, as shown on the T-s diagram on the left: 1-2: Isentropic compression in a pump. 3-4: Isentropic expansion in a turbine. 4-1: Constant pressure heat rejection in a condenser.

What are advantages of modified Rankine cycle?

This cycle is known as modified Rankine cycle. The reason for the early release is that at the lower pressure the specific volume of steam is high. In order to accommodate such rapidly expanding steam, large cylinder volume is necessary and the extra work obtained is very small.

What is reheat in Rankine cycle?

Reheat in Rankine cycle is heating the steam which comes out from Low pressure turbine. For reheating the steam is passed through the boiler part.

How to determine the thermal efficiency of a Rankine cycle?

9-1-12 [steam-3MPa] In a steam power plant operating on a Rankine cycle, steam enters the turbine at 3 MPa, 350 o C and is condensed in the condenser at a pressure of 75 kPa. If the adiabatic efficiencies of the pump and turbine are 80\% each, determine (a) the thermal efficiency of the cycle.

What is the Rankine cycle in a steam power plant?

Anim. 9-1-4(click) 9-1-5 [steam-500C] A steam power plant operates on the simple ideal Rankine cycle. Steam enters the turbine at 4 MPa, 500 o C and is condensed in the condenser at a temperature of 40 o C. (a) Show the cycle on a T-s diagram.

What is the process of Rankine cycle in Q5?

Q5. In the following T-s diagram of Rankine cycle, process (1-2) is heat addition in boiler, process (2-3) is an expansion at turbine, process (3-4) is a condensation process and process (4-1) is a pumping process at feed pump. What is the formula for efficiency of Rankine cycle?