Input lever
Flow, Pressure & Separation
Detail panel
Press force
The physical force applied to the plunger.
AeroPress Wheel Variable
Bed compression
Flow, Pressure & Separation · Process state
Compression of the coffee bed during pressing.
Process state
Flow, Pressure & Separation
Wheel face
Technical science
Definition
Bed compression is the physical packing of the slurry bed as pressure and flow reduce the water content of the puck.
Why It Matters
Compression changes permeability, flow resistance, and the quality of the last liquid.
Page Context
Bed compression is part of the Brew Supply AeroPress Wheel and helps brewers describe compression of the coffee bed during pressing.
Related variables
Input lever
Flow, Pressure & Separation
Wheel face
Plunger speed
How quickly the plunger moves downward.
Input lever
Flow, Pressure & Separation
Wheel face
Output flow rate target
The desired liquid output speed during pressing.
Input lever
Flow, Pressure & Separation
Wheel face
Press duration
How long the active press phase takes.
Input lever
Flow, Pressure & Separation
Advanced detail
Pressure ramp
How pressure builds during the press.
Input lever
Flow, Pressure & Separation
Detail panel
Stop depth
The physical plunger position where pressing stops.
Affected outcomes
Measured metric
Cup Outcome
Wheel face
Beverage TDS
Measured total dissolved solids in the served beverage.
Calculated metric
Cup Outcome
Wheel face
Extraction Yield
Calculated percentage of coffee mass extracted.
Measured metric
Cup Outcome
Wheel face
Beverage Yield
The liquid beverage mass collected or served.
Cup outcome
Cup Outcome
Wheel face
Aroma
The smell of the brewed coffee.