Heat exchangers shall be checked for __________ water flow.

• A. Cooling
• B. Hot water
• C. Condensing
• D. Laminar flow

Answer: (A)

Adequate cooling of the heat exchanger is what is being tested. Heat exchangers remove heat from the pump system by using a cooling water stream; if that water doesn’t flow properly, heat can build up and cause overheating or damage. Therefore the requirement is to verify that there is enough cooling water flowing through the exchanger to carry away the heat produced during operation. Using hot water would add heat rather than remove it, and terms like condensating water or laminar flow don’t address the need for proper cooling flow in this context. In practice, you’d check that the cooling water flow meets the design minimum and that the exchanger’s outlet temperature stays within safe limits.