'a parabolic trough solar collector system with reflector rotatable at a minimum torque collinear with the axis of a stationary receiver tube'

摘要

The invention relates to a parabolic trough solar collector system receiving a sun ray all throughout the day time, the system comprising a parabolic trough acting as a reflector having a receiver tube placed at the focal length of the trough, the trough being supported by a metallic structure over bush or bearing assembly; the parabolic trough enabled to move along east-west direction maintaining the receiver tube fixed and stationary wherein the trough is rotatable at a minimum torque along an axis collinear with the axis of the stationary receiver tube, the rotational axis of the trough constantly coinciding with the focal line allowing the receiver to be focused to incident of sun rays all through the day time.