What temperature does ammonia boil at under 33 PSIG?

The boiling point of ammonia is dependent on the pressure above the liquid. At higher pressures, the boiling point increases. Under a pressure of 33 PSIG, ammonia will boil at approximately 20ºF. This is derived from ammonia's properties and pressure-temperature relationships outlined in its saturation table, which indicates how the boiling point varies with changes in pressure.

Understanding this concept is crucial for operators working with ammonia in refrigeration systems, as it helps in determining the phase of ammonia and ensuring proper operation within the systems. The other temperatures listed do not correspond to the boiling point of ammonia at 33 PSIG based on these established thermodynamic principles.