Heating and Cooling Coils
Heating with steam or hot water, and cooling with water or another heat transfer fluid can often be a cost effective way to regulate temperature in metal finishing solutions. Choosing the correct coil configuration involves a number of factors:
- Chemical composition of the solution being heated/cooled
- Steam pressure or water temperature
- Heat up time and/or cooling time
- Tank dimensions – L” x W” x H” or Diameter x H”
- Operating temperature
Description
There are a variety of coil styles and materials to accommodate every metal finishing heating and cooling application.
Heat Exchanger Styles
- External heat exchangers – in line heat most commonly used in electroless nickel
- Plate coils – thin metal rectangular heat exchangers commonly used in phosphating, cleaning and plating
- Teflon Spaghetti coils – thin tubes of Teflon coils that provide high surface area
- Teflon Heating/Cooling coils – tubular Teflon coils for aggressive chemicals
- Grid Coils – metallic tubular grid configuration commonly used in cleaning and plating solutions
- Serpentine Coils – metallic tubular serpentine configuration
- U-Shaped Coil – simple u-shape for low surface area applications
Materials
- Stainless Steel – 304 & 316
- Titanium
- Zirconium
- Teflon – PTFE
- Tantalum