Copper Coil INSIGHTRecold
OverviewCopper heat-exchange coils, used in every Recold Fluid Cooler and Evaporative Condenser, provide many distinct advantages.
Primary Benefits• Halfthecorrosionrateofcarbonsteelinclosed
systems, translates into potentially longer product life
• Seventimesgreaterthermalconductivitythancarbonsteel,allowsforsmallerequipmentsizeandlessequipmentweight
• Easiersystemcircuitchangesorrepairs,withnoweldingrequired
• Greenerproduct
Benefit DetailLonger Equipment Life:
• Copperprovidessuperiorcorrosionresistance,extendingequipmentlife
• Coppermaintainssystemefficiencybetterwithtime
• Coilscanbedrainedasoftenasnecessary
Greater Thermal Efficiency:
• Thermalconductivityofcopperismorethanseventimesthatofcarbonsteel,enhancingheattransfer
• Smallerequipmentsize
• Lowerequipmentweight
more
CARBONSTEEL
STAINLESSSTEEL
COPPER
250
200
150
50
100
THER
MAL
CON
DUCT
IVIT
Y (B
tu/h
·ft2 ·°
F)
Adaptedfrom Standards for Corrosion Rates, BennettP.Boffardi,Ph.D.,FNACE
COPPER
CARBON STEEL
CLOSED SYSTEM OPEN SYSTEM
6
5
4
3
2
1MIL
S (.
001)
PER
YEA
R
Benefit Detail Easier to work with:• Coppercanbebrazed,unlikesteelwhichhasto
bewelded
• Coppercoilscaneasilybecircuitedtoseparatemultipleloadswithinthesameunitifdesired
Green material:• Recyclableattheendofitsusefullife,potentially
resulting in a higher salvage value per pound than steel
• Copperisnaturallybacteriostatic(inhibitsbacteriagrowth)
• Lessprocessfluidsrequiredbecauselessheattransfersurfaceisneededforthesameamountofcooling
History• Recoldhasmanufacturedheatexchange
equipmentservingrefrigeration,HVAC,andindustrialapplicationsforover75years.Forthebestvalueinevaporativecoolingequipment,insistonaRecoldheattransfercoilmadefromcopper.
Copper Coil INSIGHT
7401 WEST 129 STREET | OVERLAND PARK, KANSAS 66213 UNITED STATES | 913 664 7400 | [email protected] | spxcooling.com
Contact your Marley Sales Representative at spxcooling.com/en/sales/
In the interest of technological progress, all products are subject to design and/or material change without notice.©2011 SPX Cooling Technologies, Inc. | Printed in USA
IN-RC-10
2005
$4.00
DOLL
ARS
PER
LB
$3.00
$2.00
$1.00
20102009200820072006
COPPER
CARBON STEEL
SALVAGE VALUE
STEELCOPPER
300
250
200
VOLU
ME
(GAL
LONS
)
Internal coil volume typical of a 100 ton forced-draft fluid cooler
Key Contacts• Refrigerationapplications:MikeLloyd
• HVACapplications:JonWalker
