When suction pressure increases, how does this affect compressor capacity?

When suction pressure increases, the compressor capacity also increases. This relationship is primarily because an increase in suction pressure raises the density of the refrigerant entering the compressor. As the refrigerant's density increases, more refrigerant can be compressed in the same period of time.

When the suction pressure is higher, the compressor has to do less work to draw in the refrigerant, allowing it to pump more refrigerant vapor per cycle. This results in an enhanced volume flow rate of the refrigerant, which directly translates to improved cooling capacity.

In summary, when suction pressure rises, it allows for more efficient processing of the refrigerant within the compressor, thereby augmenting the overall capacity of the system. Understanding this relationship is crucial for optimizing refrigeration system performance and ensuring effective temperature control.