What is the density of vapor for refrigerant R717 at 45 degrees?

The correct density of vapor for refrigerant R717 (ammonia) at 45 degrees Fahrenheit is approximately 0.0269 ft³/lb. This measurement is crucial for various calculations within refrigeration systems, including determining flow rates and designing systems for optimal performance. Ammonia is a common refrigerant used in industrial refrigeration applications, and understanding its properties, such as vapor density, is essential for engineers and operators.

When looking at the given values, the correct answer closely matches typical reference data for R717 under the specified temperature. Using accurate values for density is vital for system efficiency and safety, as they directly impact how the refrigerant behaves in the system.

The other values presented do not align with established data for R717 at 45 degrees—either being too low or too high, which would not accurately represent the vapor density of ammonia under these conditions. This highlights the importance of consulting reliable refrigerant property tables or databases when examining these characteristics in practical applications.