What is Desuperheater | Water heater and its Applications? “Desuperheater” High Efficient Energy conservation | Page 2

• Direct contact type - The medium used to cool the superheated steam
comes into direct contact with it. In most cases, the cooling medium is the
same fluid as the vapour to be desuperheated, but in the liquid state. For
example, in the case of steam desuperheater, water is used.
Working of a Desuperheater:
Water or a liquid used inside the desuperheater comes in to contact with the
superheated steam or heat energy and by absorbing the energy from steam
superheated liquid will evaporates and reduces steam temperature. This
simple technique is used to minimize the temperature of the steam. The
outlet steam temperature is maintained by the quantity of the water or
superheated liquid that is evaporated.
To reduce the time of suspension of the water particles in the steam it is
proposed to inject hot water near the saturation temperature of the steam to
be cooled so that the latent heat is extracted to evaporate the injection
water.
http://www.maniks.com/desuperheater.html
Maniks Desuperheater:
Maniks are having comprehensive range of desuperheater supply since last
three decades. Maniks introduced variety of desuperheaters with precise
temperature control for various applications in chemical or oil & gas process
plants where the available refrigerant is at superheated conditions. This
Desuperheater has high performance, custom design, easy to install and
requires very low maintenance.
In the normal refrigeration cycle, a refrigerant gas such as ammonia, Freon
is compressed in a compressor, passes through a condenser where it gives
off heat and changes to a liquid state and then is passed through an
expansion valve to an evaporator coil to absorb heat and change the
refrigerant back to a gaseous state for' recompressing in the compressor to
complete the refrigeration cycle. The evaporator coil is positioned within a
refrigerated box, display case, or cabinet and the heat absorbed by the
refrigerant passing through the coil serves to extract heat from the
refrigerated box and its contents to maintain the box at the desired
temperature. As is well known, this extracting of heat from the refrigerated
box' and its contents causes frost to form on the evaporator coil and