What are the key factors to consider when designing the layout of refrigerant piping?

When designing the layout of refrigerant piping, several factors must be considered, including pipe size and material, fittings and valves, insulation, and supports. The piping layout must ensure minimal pressure drops, avoid oil trapping, and prevent refrigerant leakage. The layout must also allow for easy access for maintenance and repair. Additionally, the piping layout must comply with relevant codes and standards, such as ASHRAE and ASME. A well-designed piping layout is critical to ensure efficient, reliable, and safe operation of the refrigeration system.