Understanding Ambient Air Vaporizer Made Easier Now
Ambient
air vaporizer is used to vaporize Nitrogen, Oxygen,
LNG and other cryogenic liquids at extremely low temperature. The frost
formation occurs because of a huge temperature difference between ambient air
and cryogenic fluid. Uncomplicated heat exchanges are used to vaporize
liquefied gas by making use of heat absorbed from ambient air. Due to the
simplification with which the process is carried out, these vaporizers don’t
need external power; they use ambient air as the source of energy. Ambient
vaporizers are used in a wide range of application
throughout the industry. They are vertically oriented heat exchanges.
Notably,
vaporizer’s vertical orientation creates natural downdraft because of warmer
air which is lighter than the cold dense air. Designing of Ambient Air
Vaporizer is created after considering many factors including the environmental
effect which is a prominent criterion. While designing fan-assisted and natural
draft vaporizers, basic climate zones are taken into consideration – tropical,
Mediterranean, marine and humid continental. Natural draft vaporizers use
natural convective heat transfer while fan-assisted vaporizers utilize forced
convective heat transfer. Moreover, natural convective vaporizers are
manufactured with different fin spacings based on how long vaporizer will be
operated before the defrost process completes.
Wide
gap natural convection vaporizer is designed to be operated for several days
without defrost. Super-wide spaced ambient air vaporizer is operated
continuously; it has the possibility of manual defrost needed few times per
year. On the other side, forced convective vaporizers have been designed with
maximum heat transfer area in minimum space. Typically, they are equipped with
fin tip-to-tip air gap spacing which may vary depending on equipment usage or
application. Natural draft ambient air vaporizers operate based on the
principal of natural convective heat transfer. The gravitational force pulls
air past the heat exchanger fins. Furthermore, the density promotes downward
motion.
Prior to investing in Ambient Air Vaporizers, it is imperative to
understand different types of vaporizers available especially for cryogenic
industry
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