Understanding Pressure and Its Application in HVAC Systems

The Discharge of Safety-Pressure Relief Devices in HVAC Systems

When it comes to inside receivers with safety-pressure relief devices, the discharge of the device should be piped to the outside atmosphere. This is important for ensuring the safe release of excess pressure buildup within the system.

Understanding Pascal as the Unit of Pressure

The unit of pressure in the International System of Units (SI) is called the pascal (Pa), named after the scientist Blaise Pascal. One pascal is equal to one newton (N) of force applied over an area of one square meter (m2). This unit is commonly used in HVAC systems to measure pressure levels and ensure proper operation.

Practical Example of Pressure in HVAC Systems

For instance, in an HVAC system, when there is a strong push of refrigerant gas accumulating in an inside receiver, the safety-pressure relief device helps to maintain the pressure at safe levels by releasing the excess gas to the outside atmosphere. This prevents potential damage to the system and ensures optimal performance.

It is essential for HVAC technicians and engineers to understand the concept of pressure and how it influences the operation of HVAC systems. By complying with proper piping of safety-pressure relief devices and monitoring pressure levels in the system, they can ensure the safety and efficiency of HVAC systems.