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Chart’s brazed aluminum heat exchangers (BAHX) are
at the heart of cryogenic gas processing applications worldwide
and offer vastly superior heat transfer performance
versus their shell and tube counterparts. The Chart pedigree
began over 60 years ago with the Trane company and in the
90’s incorporated the unification of the Altec and
Marston brands, both giants in the field and world renowned
for quality, reliability and ‘can do’ attitude.
That ethos remains today and Chart remains at the forefront
of technical development offering higher performing heat
exchangers at increasingly higher pressures for further
process optimisation.
A BAHX is typically 20%
the size of a shell and tube exchanger of comparable performance.
Furthermore, the alternating plate fin construction offers
multiple stream capability and simplifies a series of shell
and tube units to a single compact structure.
All aluminum construction for maximum heat transfer and
thermal conductivity.
High performance heat transfer fins.
Bespoke design for optimum thermal and hydraulic performance.
Reduced temperature approach provides operational power
savings and reduced compressor first costs.
Reduced ancillary costs.
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Each BAHX consists
of alternating layers of corrugated fins (secondary heat
transfer surface) separated by flat plates (primary heat
transfer surface). Apart from the fluid entry and exit ports
the edges are sealed with bars and the unit is brazed in
a vacuum furnace. Construction is completed by attaching
and welding the headers and nozzles over the entry and exit
ports and the finished unit is rigorously tested for mechanical
strength and leaks prior to despatch.
Click to enlarge.
Custom design to meet customer’s thermal and hydraulic
performance requirements.
Proprietary in-house high performance simulation software
results in optimal configurations. However, designs can
be cross-checked against commercially available software
for added piece of mind.
Comprehensive range of heat transfer fins and patterns,
all proven to facilitate maximum design flexibility.
A rigorous development program supports Chart’s commitment
to continued improvements in thermal efficiency and high
pressure design capability.
Heat exchangers can be offered in accordance
with all recognised applicable national design codes and
Chart holds all major international quality accreditations.
BAHX are Mission Critical Equipment
for all cryogenic processing applications including Air
Separation, LNG liquefaction, Nitrogen Rejection, NGL Recovery
and other low temperature natural gas and petrochemical
processing processes.
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Installation support ranging from advice through on-site
supervision through to a complete installation service.
Technical advice and tuition.
BAHX typically provide many years of
trouble free operation and breakdowns are extremely rare
with complete failures rarer still. However, when they do
occur Chart recognises the importance of having the plant
fully on line with the minimum of delay and consequently
we offer a complete field repair service where all remedial
work is carried out by specialist personnel and endorsed
with the ASME R code stamp. In the event that a replacement
unit is required Chart will accommodate ‘quick ship’
requests and offers complete flange to flange replacement
units regardless of the OEM.
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