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Rotary engines do not have valves. They have rotors that are triangular shaped that spin in a circle around the eccentric shaft alongside the housing wall. The fuel squirts into the chamber made by...
Most conventional air conditioners work off a compressor tow coils and two fans. The compressor, produces high pressure gas ( R12, R22, R410a etc.) this ispiped to the evaporator coil when it passes...