394. Steam traps are essential components of any steam cycle. When malfunctioning, they will reduce cycle's energy efficiency and may cause other problems in the condensate drain system. What simple, definite, technique may one use to identify a malfunctioning trap?

Comparing upstream and downstream pipe temperatures using a temperature indicator provides an objective assessment of trap function, revealing whether it effectively discharges condensate while retaining steam. A temperature drop indicates proper operation, while a lack of drop or unexpected profile suggests a malfunction.