At a suction temperature of 50° F, what is the corresponding pressure in psi for an ammonia system?

In an ammonia refrigeration system, the relationship between temperature and pressure is defined by the saturation pressure corresponding to the suction temperature. At 50° F, ammonia has a specific pressure associated with it due to the properties of the refrigerant. According to standard ammonia pressure-temperature charts, at a suction temperature of 50° F, the corresponding pressure is approximately 75 psi. This pressure is critical for the proper functioning of the refrigeration system as it influences the efficiency and effectiveness of the heat exchange process.

Knowing the saturation pressure helps in determining the operational parameters and ensuring that the system runs within safe and efficient limits. When understanding the operation of ammonia systems, it's important to refer to these charts or tables that provide the relationship between temperature and pressure for accurate assessments and troubleshooting in refrigeration applications.