By condensing the working steam vapor to a liquid the pressure at the turbine outlet is lowered and the energy required by the feed pump consumes only 1% to 3% of the turbine output power and these factors contribute to a higher efficiency for the cycle
Why does a Rankine cycle need a condenser?
Then in step 3 it expands through the turbine giving us power output Then on step 4 we need the condenser to remove the heat and condense this expanded gas back into a fluid That way the fluid can be easily pumped with a small amount of power input into the high pressure boiler
Why condenser is an important for engine?
A condenser is designed to transfer heat from a working fluid (eg water in a steam power plant) to a secondary fluid or the surrounding air Condensers have two significant design advantages over other cooling technologies: Heat transfer by latent heat is much more efficient than heat transfer by sensible heat only
Why do we use condenser in power plant?
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
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 a condenser in a Rankine cycle?
The Rankine cycle system consists of a pump, boiler, turbine, and condenser 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 is the function of condenser Mcq?
Explanation: Condensers use the property of condensation which is a convective heat transfer process that is associated with a change in the phase of a fluid from the gas to a liquid phase
What is the purpose of a condenser in chemistry?
In chemistry, a condenser is laboratory apparatus used to condense vapors — that is, turn them into liquids — by cooling them down Condensers are routinely used in laboratory operations such as distillation, reflux, and extraction
Why is condenser used in distillation process?
Condenser is a cooling unit used in the distillation process For cooling the vapors back to liquid droplets the condenser is fitted Hence we can say that the main aim of the condenser is to cool the vapors, release heat to the surroundings and collect the liquid back through the condensation process
Is a condenser a heat exchanger?
A condenser can be considered a form of heat exchanger as it is similar to a chiller heat exchanger in function
Why it is called surface condenser?
The exhaust steam enters from the top due to gravity The direction of the exhaust steam is changed and forced towards the center of the system with the help of an air pump This is the reason why this system is named a central flow surface condenser
Which condenser is more suitable for high power capacity plants?
35 The surface condenser is the type most commonly used in modern power plants and hence it will be the only one taken into consideration Here, the main heat transfer takes place at the outside of the tube, thereby cooling vis-a-vis condensing of the saturated steam, and hence heating of the CW inside the tube
What are the advantages of condenser?
Advantages of a condenser in a steam power plant It reduces back pressure of the steam which results in more work output It reduces temperature of the exhaust steam which also results in more work output The condensed steam can be reused as feed water for boiler which reduces the cost of power generation
What are the advantages and disadvantages of condensers?
Advantages and Disadvantages of Air cooled condensers Air cooled condensers are simple in operation They are smaller in size Required maintenance of air cooled condensers is low Cleaning process is easy Installation cost is comparatively less Design of air cooled condensers are less complex
What is the difference between condenser and surface condenser?
Surface condensers (or non-mixing type condensers) In surface condensers, there is no direct contact between the exhaust steam and the cooling water In jet condensers there is direct contact between the exhaust steam and cooling water
What does condenser pressure mean?
Condensing pressure: The pressure at which the refrigerant is phase changing from a vapor to a liquid Evaporating pressure: The pressure at which the refrigerant is phase changing from a liquid to a vapor
Which pump is used 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)
What is the purpose of Rankine cycle?
The Rankine cycle or Rankine Vapor Cycle is the process widely used by power plants such as coal-fired power plants or nuclear reactors In this mechanism, a fuel is used to produce heat within a boiler, converting water into steam which then expands through a turbine producing useful work
Which of the following material is used for condensers?
The most common tube materials in a condenser are copper–nickel alloys, brass, titanium, stainless steel, and ferritic stainless steel Pitting is the most common form of damage in condenser tubing OD erosion/corrosion is very common in brass tubing Tubes in the top row are susceptible to OD erosion
Why condensate steam is recirculated to boiler?
At the end of a steam power cycle, the steam is condensed to water A condensate pump recirculation water valve controls the bypass flow from the pump outlet back to the condenser, preventing overheating and cavitation in the pump
What type of process is the ideal Rankine cycle Mcq?
Explanation: Ideal Rankine Cycle is a reversible process Explanation: For analytical purposes, always steady flow operation is considered, as in unsteady flow, the various fluid properties vary considerably which remain same when the steady flow operation is assumed