Plate and frame heat exchangers used in pasteurizing operations are better heated by hot water sets using direct steam injection. Although many dairy and fruit juice processors have traditionally used indirect heating systems, many cost-conscious, quality oriented companies are turning to Pick Direct Steam Injection Heaters for more accurate, energy efficient heating for pasteurizing.
Indirect heating systems face many challenges. They require steam traps and expansion tanks, along with added maintenance. They often result in fluctuations in temperature that can result in hot spots and burn on, or off flavored product. The inability to hold precise temperature control can result in costly product loss. Additionally, the indirect heating systems do not offer the 100% heat transfer provided by direct steam injection.