Desuperheating is used to improve the thermal efficiency of heat transfer processes by lowering the temperature of the steam to close to saturation temperature. The DAM steam desuperheater is used in applications where large spray water flow is required when desuperheating the steam, and where the demand for saturated steam is high. The DAM is a high performing ring style desuperheater with a welded flow profiling liner for superior evaporation and performance. It complies with all existing standards and is always pressure tested on both the steam side as well as the water side.
The DAM desuperheater is installed in the steam pipe with a number of water atomizing nozzles attached. The size of the nozzles, their number and insertion length may differ depending on steam desuperheating needs and steam pipe diameter.
The nozzles receive water from a common spray water pipe encircling the steam pipe, supplying water evenly across the nozzles.
Spray water flow is controlled via an external spray water valve connected to the DAM water connection piece. This valve is regulated via a temperature control system that uses the downstream steam temperature to determine the amount of spray water needed. The placement of the temperature transmitter and the installation of the steam pipe are of critical importance for achieving accurate steam temperature regulation. For more information, see IMI CCI document ‘II500.11 – System design considerations for DAM desuperheaters’.
A flow profiling liner is welded to the inside of the DAM body to improve system turndown and to protect the steam pipe against thermal shock and erosion in the downstream pipe.
We’re always looking for opportunities in local and export markets, so please don’t hesitate to contact us with your enquiry.
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