EPRI Heat Transfer & Fluid Flow Practice Test 2026 - Free Practice Questions and Study Guide for Heat Transfer & Fluid Flow Certification

The key idea here is converting temperatures between Celsius and Kelvin and knowing the boiling point of water at standard atmospheric pressure. Water boils at 100°C when the pressure is 1 atmosphere. To convert Celsius to Kelvin, add 273.15, so 100°C corresponds to 373.15 K. The other numbers don’t match the boiling point at standard pressure: 273.15 K is the freezing point (0°C), 453.15 K is 180°C, and 500 K is about 226.85°C. Therefore, the boiling point of water in Kelvin is 373.15.