What is steam desuperheater?
A desuperheater device injects a controlled amount of water into the superheated steam. The steam temperature is reduced by evaporative cooling from the water being injected into the superheated steam thereby lowering the temperature to allow for more efficient downstream use of the steam.
What does steam Attemperation mean?
[′stēm ə‚təm·pə′rā·shən] (mechanical engineering) The control of the maximum temperature of superheated steam by water injection or submerged cooling.
How does a desuperheater work?
Desuperheating is the process by which superheated steam is restored to its saturated state, or the superheat temperature is reduced. Most desuperheaters used to restore the saturated state produce discharge temperatures approaching saturation (typically to within 3°C of the saturation temperature as a minimum).
What is a desuperheater valve?
A desuperheater injects a precise and pre-set amount of water into a steam flow in order to lower the temperature of super heated steam. It can successfully provide heat transfer or for other industrial use to ensure costly problems are avoided such as lengthy start and shutdown times.
Why Attemperator is used in boiler?
Boiler attemperators are used to fine tune / control steam temperature from a boiler, as well as the steam temperature between boiler stages.
What is a spray desuperheater?
In water spray desuperheaters, superheated steam is passed through a section of pipe fitted with one or more spray nozzles. These inject a fine spray of cooling water into the superheated steam, which causes the water to be converted into steam, reducing the quantity of superheat.
Why desuperheater is used?
The primary function of a desuperheater is to lower the temperature of superheated steam or other vapors. This temperature reduction is accomplished as a result of the process vapor being brought into direct contact with another liquid such as water.
A desuperheater injects a controlled, predetermined amount of water into a steam flow to lower the temperature of the steam. To achieve this efficiently, the desuperheater must be designed and selected correctly for the application.
What is a steam atomizing desuperheater used for?
The Copes-Vulcan Steam Atomizing Desuperheater (SA-35) is used to reduce the temperature of vapors such as steam with condensate such as water. It was developed to obtain a more uniform spray under varying load conditions where no pressure drop in the steam header can be tolerated.
What is a Samn-U desuperheater?
Copes-Vulcan’s Spring Assisted Multiple Nozzle Desuperheater (SAMN-U) reduces steam or gas temperatures by introducing cooling liquids directly into the hot vapor. The SAMN-U desuperheater has six nozzles which can be opened or closed to vary the coolant flow.
What is a direct contact desuperheater?
This is the simplest form of direct contact desuperheater. The superheated steam is injected into a bath of water. This additional heat will cause saturated steam to evaporate from the surface of the bath.