What is the main difference of condensing and non-condensing steam power plants?
What is the main difference of condensing and non-condensing steam power plants?
There are two different classifications of Combined Heat and Power Steam Turbines; condensing and non-condensing. In a condensing turbine, steam expands below atmospheric pressure (vacuum pressure). When it passes through the condenser (or series of condenses), a maximum pressure drop is experienced.
What is the advantage of condensing 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 are the advantages of condenser?
Advantages of a condenser in a steam power plant 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. It reduces temperature of the exhaust steam which also results in more work output.
What are the advantages and disadvantages of steam turbine?
Relatively high overnight cost. Steam turbines are less efficient than reciprocating engines at part load operation. They have longer startup than gas turbines and surely than reciprocating engines. Less responsive to changes in power demand compared with gas turbines and with reciprocating engines.
What is the difference between condensing and non-condensing turbines?
There are two different classifications of Combined Heat and Power Steam Turbines; condensing and non-condensing. In a condensing turbine, steam expands below atmospheric pressure (vacuum pressure). However, they are typically more expensive than non-condensing turbines because of the required condenser.
What are types of steam?
Types of Steam
- Pressure-Temperature Relationship of Water & Steam.
- Saturated Steam (Dry)
- Unsaturated Steam (Wet)
- Superheated Steam.
- Supercritical Water.
- Various States of Water.
What are the requirements of steam condensing plant?
The principle requirements of steam condensing plant are: 1. Condenser: It is a closed vessel used to condense the steam. The low pressure steam gives o its heat to the coolant (here water from cooling tower) and gets converted into water during the process of condensation.
What is function of steam condenser?
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 so that it can be used in the steam generator or boiler as boiler feed.
What are the advantages and disadvantages of condenser?
Water cooled condensers have a high rate of heat transfer. Overall operation is less expensive. Water cooled condensers are used for large capacity plants. It produces less noise.
What are the advantages of air cooled condenser?
Advantages of air-cooled condensers: They are smaller in size. Required maintenance of air cooled condensers is low. Cleaning process is easy. Installation cost is comparatively less.
What are the advantages and disadvantages of steam?
Advantages and disadvantages of steam systems compared to hot water systems
- Smaller mass flow rate for same quantity of heat transferred (by factor 10 – 50)
- No circulating pumps required.
- Smaller pipe cross-sections.
- Possibility of very fast uniform heating-up at heat consumers.
What are the advantages and disadvantages of steam condenser?
Steam Condenser: Types, Working, Advantages and Disadvantages. 1 1. Condenser. The condenser is a closed vessel in which steam is condensed. During the condensation process, steam gives heat energy to the coolant 2 2. Condensate Pump. 3 3. Hot Well. 4 4. Boiler Feed Pump. 5 5. Air Extraction Pump.
What are the disadvantages of a surface condenser?
Wastage of condensate. If condensate is to be recirculated to the system, the condensing medium should be free from harmful impurities. If the condensate extraction pump fails, there is a greater possibility of flooding of condenser. What is surface condenser? Surface condenser is indirect heat exchange (non-mixing type condenser).
How does a non condensing steam turbine work?
The non-condensing steam turbine uses high-pressure steam for the rotation of blades. This steam then leaves the turbine at the atmospheric pressure or lower pressure. The pressure of outlet steam depends on in the load, therefore, this turbine is also known as the back-pressure steam turbine.
Why do we need a steam condenser in a power plant?
The condensed steam is known as condensate. The efficiency of the steam power plant is increased by the use of a condenser. The steam condenser is an essential component of all modern steam power plants. A steam condenser has the following two objectives:
Wastage of condensate. If condensate is to be recirculated to the system, the condensing medium should be free from harmful impurities. If the condensate extraction pump fails, there is a greater possibility of flooding of condenser. What is surface condenser? Surface condenser is indirect heat exchange (non-mixing type condenser).
