The same way a car/truck does minus the thermostate... air goes threelw the radiator coolon the coolant in it, amd the waterpumo circulates the coolant threw the system
the liquid is pumped around the cylinder, where the liquid absorbs heat, then the liquid is pumped through the radiator, where that heat is dissipated into the air around it.
Yes the cool coolant ' absorbs ' the heat from the cylinder as it travels threw, when it passes threw the radiator the air flowin threw 'pulls' the heat out lf the coolant.. this is a continuous cycle..... like i saod like a car minus the thermostat..