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Solar energy concentrating and collecting arrangement with sun-follower and solar energy sensing power control and method
| Details |
Inventors: Barr, Irwin R.;
Assignee: AAI Corporation (Cockeysville, MD)
Primary Examiner: Sprague; Kenneth W.
Assistant Examiner: Yeung; James C.
Attorney, Agent or Firm: Pippin, Jr.; Reginald F.
A solar energy concentrating and collecting arrangement and method in which a semi-cylindrical oblong concave reflector/concentrator forms the roof of a house, school or other building, particularly a heat utilization building. A collector is movably supported in spaced relation above and along the length of the oblong roof/reflector concentrator, for pivotal movement, by a solar reflection energy sensing and seeking drive control arrangement, to a zone of maximum confluence of solar energy rays reflected from the roof/reflector concentrator as a result of variations of sun path during the various parts of the year and also to further accommodate each day's movement of the sun. Movement of the collector is by pivotal movement about an axis parallel with the center of curvature or curvatures of the roof/reflector concentrator and disposed adjacent the roof/reflector concentrator. The roof/reflector has a plurality of radii, for enabling accommodation of wide variations of the sun angles during the various seasons of the year and during each day of a given season, while still affording a desired concentration of solar energy on the collector. The concentrated solar energy collected by the collector is transferred to a fluid, such as water, passed along the length of collector, by a pump forming a part of a heat utilization system, which may include heating and/or cooling of the building and/or additional buildings or other structures. The roof/reflector concentrator is oriented with its center of curvature axes running East-West and with its surface tilted toward the Equator, the degree of tilt being dependent upon the latitude of the reflector. |
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DETAILED DESCRIPTION I claim: 1.
A solar energy concentrating and collecting arrangement, comprising a generally upwardly facing concave generally semi-cylindrical reflector-concentrator having a longitudinal axis, and a movable solar energy collector mounted for movement above said reflector-concentrator, in a direction transverse to said longitudinal axis, differential solar energy-sensing means disposed on said movable collector for movement therewith and in effectively transversely centered relation relative to the effective longitudinal center line of said movable collector and having a differential energy-sensing direction oriented transversely of said longitudinal axis of said reflector-concentrator, and means for moving said collector transversely of said longitudinal axis extent of said semi-cylindrical reflector-concentrator as a function of solar energy sensed by said differential energy-sensing means.
2.
An arrangement according to claim 1, said reflector forming a generally effectively overall curved reflecting surface formed by a plurality of radii, the smaller of said radii forming the zone of said surface furthermost from the Equator.
3.
An arrangement according to claim 2, a chord passing between the front and rear effective longitudinally extending edge zones of the portion of said reflector formed by two adjacent plural radii surface portions being tilted toward the Equator.
4.
An arrangement according to claim 1, said differential energy-sensing means being disposed on the lower side of said variable collector and facing said reflector for detecting solar energy reflected from said reflector.
5.
An arrangement according to claim 1, said differential energy-sensing means comprising plural photo-sensory means oriented in a generally North-South plane and extending transversely of the longitudinal axis of said reflector-concentrator and along the direction of movement of said collector.
6.
An arrangement according to claim 1, said differential energy-sensing means comprising plural heat-sensing means oriented in a generally North-South plane and extending transversely of the longitudinal axis of said reflector-concentrator and along the direction of movement of said collector
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Heat Accumulators 
