Paint temperature control system

A paint temperature control system for a product finishing plant comprising:

• a plurality of finish application booths at which a plurality of finishes are selectively applied to products being finished,
• a kitchen having a plurality of storage vessels containing a plurality of liquid finishes,
• conduit means forming a circulation loop for each said finish, extending from said kitchen to said application booths and back to said kitchen,
• a plate type heat exchanger in each of said circulation loops,
• a pump in each of said circulation loops operable to circulate each of said finishes from its associated storage vessel through its associated plate heat exchanger and through said plurality of finish application booths and back to its associated storage vessel, and
• a water coolant subsystem including
• conduit means connecting said plurality of plate type heat exchangers in parallel relationship to one another and defining a circulation path,
• a water pump operable to circulate water in said circulation path and
• temperature control means in said circulation path maintaining the temperature of water delivered to said plate type heat exchangers at a set point temperature, said plate type heat exchangers having sufficient heat transfer surface area to maintain the temperature of said finish delivered to said application booth in the range of plus or minus 2.degree. F. of said set point temperature.