Final answer:
1) Compressor speed. Compression speed is not a design factor affecting compressor capacity.
Step-by-step explanation:
Out of the given options, compression speed is not a design factor affecting compressor capacity.
Compressor capacity refers to the amount of gas or air a compressor can process in a given time. It is determined by various design factors.
Compressor speed, clearance space, piston displacement, and suction and discharge valve designs are all design factors that affect compressor capacity. The rotary speed or rpm (revolutions per minute) of the compressor directly influences the amount of air or gas it can compress. Clearance space, piston displacement (volume covered by the piston during its stroke), and suction and discharge valve designs also impact the capacity of a compressor.