Certified Pool Operator Practice Test

A heat sink is a way to transfer heat away from a hotter surface. In a pool circulation system, A is incorrect Explanation because radiating high temperatures is not a case where there is a need to transfer heat away, as the water is already at a normal operating temperature. B, C, and D are all reasons why a heat sink may be used in a pool circulation system. Cooling water for PVC piping can prevent damage to the pipes, maintaining water chemistry balance ensures the safety of swimmers, and preventing overheating in circulation pipes can avoid damage to the system. Ultimately, the purpose of a heat sink in a pool circulation system is to control and regulate the temperature of the water.