Jet Condenser And Surface Condenser Pdf
File Name: jet condenser and surface condenser .zip
A surface condenser or steam condenser is a water-cooled shell and tube heat exchanger used to condensate the exhaust steam from the steam turbine in thermal power stations: the steam is converted from gaseous to liquid state at a pressure level below atmospheric pressure. The condensate can be re-used in the boiler: In surface condenser even impure water can be used for cooling purpose whereas in jet condensers cooling water must be pure.
A surface condenser is a commonly used term for a water-cooled shell and tube heat exchanger installed to condense exhaust steam from a steam turbine in thermal power stations. Where cooling water is in short supply, an air-cooled condenser is often used. An air-cooled condenser is however, significantly more expensive and cannot achieve as low a steam turbine exhaust pressure and temperature as a water-cooled surface condenser. Surface condensers are also used in applications and industries other than the condensing of steam turbine exhaust in power plants. 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. The steam turbine itself is a device to convert the heat in steam to mechanical power. The difference between the heat of steam per unit mass at the inlet to the turbine and the heat of steam per unit mass at the outlet from the turbine represents the heat which is converted to mechanical power.
In sugar Industry Condensers and cooling systems are used in boiling process to create vacuum in pans and evaporators. The principle of condenser is based on the transmission of heat content in the vapour to the cooling or injection water. The quantity of the cooling water necessary for condensation of vapour is found by equating the heat given up by the vapour in condensing to the heat absorbed by the cold water. The steam condensers may be broadly classified into the following two types, depending upon the way in which the steam is condensed. Direct Contact condenser or Jet condenser or Mixing type condenser 2. Surface condensers or non-mixing type condensers. Direct contact condensers are commonly used for condensing the vapour in evaporators and vacuum pans.
Surface condenser is the commonly used term for a water -cooled shell and tube heat exchanger installed on the exhaust steam from the steam turbines that drive the electrical generators in thermal power plants. In thermal power plants, the primary purpose of a surface condenser is to condense the exhaust steam from a steam turbine at as low a pressure as possible and to obtain pure water referred to as steam condensate so that it may be reused in the steam generator or boiler as boiler feed water. The steam turbine itself is a device to convert the heat in steam to mechanical work. The difference between the enthalpy of the inlet steam to a turbine and the enthalpy of the exhaust steam represents the heat which is converted to mechanical work. Therefore, the larger the enthalpy difference between inlet steam and exhaust steam, the higher is the amount of work delivered by the turbine. Condensing the exhaust steam of a turbine at a pressure below atmospheric pressure, increases that enthalpy difference and therefore increases the work output of turbine.
a surface condenser is used and the supply of water is limited. Types of condensers. The steam condensers are classified as follows: 1. Jet.
Surface Condenser and Jet Condenser
Generally, every large-scale industry consists of a power plant like a heat engine. The basic components of a power plant are boiler, turbine, condensers, cooling tower , etc, where each component has its individual functionality. A condenser is a unit that condenses steam to water at a pressure less than atmospheric pressure its function is to provide continuous cooling to the power plant.
Apr 20, The latest edition represents HEI's continuing program to update its standards to reflect the latest technological advancements in the field of For thermal and mechanical design and sizing of steam surface condensers based on heat transfer coefficients in accordance with HEI standards. This program Oct 1,
A steam condenser is a closed vessel in which steam is condensed by abstracting the heat by cooling it with water and where the pressure is maintained below atmospheric pressure. 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. The condenser is a closed vessel in which steam is condensed.
MCQ STEAM CONDENSERS
The surface condenser is designed to condense and deaerate the exhaust steam from the main turbine and provide a heat sink for the turbine bypass system. In surface condensers, there is no direct contact between the exhaust steam and the cooling water. The exhausted steam from the LP turbines is condensed by passing over tubes containing water from the cooling system.
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