Handbook of Solvents - George Wypych - ChemTech - Ventech!

14.8 Electronic industry 919
14.8.6 COST COMPARISON OF DIFFERENT CLEANING PROCESSES
Figure 14.8.18. Comparison of overall process costs between different cleaning
processes.
Long-term cost analysis
experience on different
cleaning processes have
been summarized in Figure
14.8.18 which describes
the overall
process costs of the different
cleaning applications
discussed.
Whereby the overall process
costs are divided
into four main sections:
• Investment costs,
• Costs for the cleaning
agent,
• Costs for the disposal
of used media/ recycling cost, and
• Energy costs.
By analyzing the numbers, the following key conclusions on the different cleaning
processes are substantial:
• The total annual process costs are always connected with the throughput, but not
necessarily in a linear function.
• The lowest investment costs can be achieved by using an aqueous-based or Novec TM
HFE-cosolvent cleaning process.
• Closed vapor degreasing and Novec TM HFE-cosolvent processes are more
competitive regarding waste disposal.
• A water-based cleaning process is the most competitive regarding media costs.
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