In determining compressor displacement, which factor is not considered?

In determining compressor displacement, the length of the pistons is not a factor that influences the calculation. Compressor displacement is primarily determined by the physical dimensions of the pistons, specifically the diameter of the pistons and the stroke length. The displacement is calculated using the formula that involves the area of the piston (derived from the diameter) and the distance the piston moves (stroke length).

The diameter of the pistons affects the area, and thus the volume of refrigerant that can be moved with each stroke. The stroke length is equally crucial because it accounts for how far the piston travels, impacting the total volume displacement per cycle.

The speed of the crankshaft indeed plays a role in how frequently the pistons move, which affects the overall capacity and efficiency of the compressor, but it does not change the actual displacement calculation itself. Thus, while piston diameter, stroke length, and crankshaft speed are all relevant to the operational characteristics of the compressor, the length of the pistons does not factor into the displacement calculations.