What happens to system efficiency if the refrigerant storage limit is exceeded in a machinery room?

When the refrigerant storage limit is exceeded in a machinery room, the system efficiency typically decreases for several reasons.

First, exceeding the storage limit can lead to an overabundance of refrigerant within the system, which can cause issues such as liquid slugging in the compressor. Liquid slugging occurs when liquid refrigerant, instead of vapor, enters the compressor during the compression cycle, leading to inefficient operation and potential damage.

Additionally, more refrigerant than the system is designed to handle can result in inadequate pressure regulation, which negatively impacts the heat exchange performance throughout the refrigeration cycle. As these inefficiencies stack up, the overall system will require more energy to maintain desired cooling capacities, thereby decreasing the overall efficiency of the system.

Moreover, excessive refrigerant can increase the risk of leaks and can cause increased wear and tear on system components, further contributing to efficiency loss over time. The system must operate under optimal conditions to maintain its efficiency, and exceeding refrigerant storage limits disrupts that balance.