Why do you need a condenser in a Vapour power cycle?

Why do you need a condenser in a Vapour power cycle?

In thermal power plants, the purpose of a surface condenser is to condense the exhaust steam from a steam turbine to obtain maximum efficiency, and also to convert the turbine exhaust steam into pure water (referred to as steam condensate) so that it may be reused in the steam generator or boiler as boiler feed water.

Why do we need condensers?

The function of the condenser in a refrigeration system is to transfer heat from the refrigerant to another medium, such as air and/or water. By rejecting heat, the gaseous refrigerant condenses to liquid inside the condenser.

Why do heat engines need a condenser?

Without the condenser, your working fluid will just reach one equilibrium state and will no longer function. All useable work is achieved by a change in fluid temperature and pressure across the turbine. The condenser is what’s driving that lower fluid temperature and pressure on the opposite side of the turbine.

Why do we need condenser in geothermal power cycle?

A condenser is normally used on all geothermal plants to increase the power by maximizing pressure drop across the turbine. Condensing the steam at the turbine exhaust creates a vacuum (0.15 atm), thus maximizing the pressure drop and power output.

What does a condenser do Thermo?

In systems involving heat transfer, a condenser is a heat exchanger used to condense a gaseous substance into a liquid state through cooling. In so doing, the latent heat is released by the substance and transferred to the surrounding environment.

What is the advantage of condensing the steam?

The main advantages of incorporating a steam condenser in a steam power plant are as follows: It increases the efficiency of the power plant due to increased enthalpy drop. It reduces back pressure of the steam which results in more work output.

What is the function of compressor?

The purpose of the compressor is to circulate the refrigerant in the system under pressure, this concentrates the heat it contains. At the compressor, the low pressure gas is changed to high pressure gas.

How does a vapor condenser work?

The compressor takes in a low temperature, low pressure refrigerant vapor, and compresses it into a high temperature, high pressure vapor. This high temperature/pressure vapor then enters the condenser where heat is removed to either air or water.

How does a steam condenser work?

Steam Condenser Working Principle A flow of cooling water is continuously circulating from the condenser inside a steam condenser to the cooling tower and the cooling tower to the condenser. When low-pressure exhaust steam leaves the turbine and passes through the condenser, it loses the heat and condenses into water.

What are two purposes of a compressor?

All air compressors perform the same basic function — they increase the pressure and reduce the volume of a gas, like air.

What are the 3 types of compressors?

There are 3 styles of air compressor commonly found in mobile industrial applications:

• Reciprocating, Piston Compressors.
• Rotary Screw Compressors.
• Rotary Vane Compressors.

Why Carnot cycle is used in vapour power cycle?

Heat exchange at constant temperature for saturated vapour also takes place at constant pressure in some devices such as condenser or steam generator and hence, Carnot cycle could be used as the basis for a vapour power cycle. We shall consider in our discussion steam as a working substance.

Which cycle is the most efficient for vapor power plant?

We have mentioned in lesson 14 that the steam power plant operating on Carnot cycle is the most efficient cycle operating between two specified temperature limits. Thus it is natural to look at the Carnot cycle first as a prospective ideal cycle for vapor power plant. Figure 31.2 shows a steam turbine power plant operating on Carnot cycle.

Can a steam engine work on the Carnot cycle?

It may be noted that it is impossible to make a steam engine working on the Carnot cycle. The simple reason for the same is that the isothermal expansion 1-2 will have to be carried out extremely slow to ensure that the steam is always at temperature T1. Thus, the isothermal compression 3-4 will have to be carried out extremely slow.

What is the working fluid in vapour power cycle?

In vapour power cycle, the working fluid exists in vapor phase during one part of the cycle and in liquid phase during another part whereas in a gas power cycle, the working fluid remains in the gaseous phase throughout the entire cycle. In this lesson, we will restrict our study to the analysis of heat engines which operate on vapour power cycle.