Self-cleaning surface system and method of cleaning

A self-cleaning surface system, comprising:

• rotatable bodies;
• a support structure supporting the rotatable bodies, wherein the rotatable bodies are configured to rotate with respect to the support structure about a corresponding rotation axis, said rotatable bodies having a corresponding cleanable surface which is parallel to the corresponding rotation axis and being configured to rotate together with the corresponding rotatable body, from facing a first direction to facing a second direction and vice versa, the first direction being opposite to the second direction;
• a rotation mechanism that is configured to rotate the rotatable bodies;
• a cleaning mechanism comprising a cleaning fluid ejection mechanism;
• and
• an activation mechanism configured to activate the cleaning fluid ejection mechanism when each cleanable surface faces the second direction, wherein the cleaning fluid ejection mechanism when activated is arranged to eject a cleaning fluid towards said one or more cleanable surfaces when the latter face the second direction;
• wherein,
• the rotatable bodies are arranged adjacent to each other, wherein along a geometrical cross section of each rotatable body, said geometrical cross section being incident and perpendicular to the cleanable surfaces, and the rotatable bodies comprise recesses configured to permit the cleanable surfaces of each rotatable body, when the rotatable bodies rotate, to at least partially fit in or pass through the recesses of the adjacent rotatable bodies.