by The Laboratory, National Technical Information Service, distributor in Pasadena, Calif, [Springfield, Va .
Written in English
|Statement||compiled by M. K. Selc̦uk ; prepared for U.S. Department of Energy through an agreement with National Aeronautics and Space Administration by Jet Propulsion Laboratory, California Institute of Technology.|
|Contributions||Selc̦uk, M. K., United States. Dept. of Energy., Jet Propulsion Laboratory (U.S.)|
|The Physical Object|
PARABOLIC DISH TEST SITE OF JPL, HISTORY AND OPERATING EXPERIENCE M. K. Selçuk and D. L. Ross Jet Propulsion Laboratory Oak Grove Drive Pasadena, CA, , USA ABSTRACT The Parabolic Dish Test Site (PDTS), located at the JPL Edwards Test Station, Edwards Air Force Base, California, was operational from Septem ber through June Cited by: 1. M. Orosz, R. Dickes, in Organic Rankine Cycle (ORC) Power Systems, Parabolic dish reflector. A parabolic dish reflector (PDR) is a point-focus system with a paraboloid geometry given by the revolution of one half of a parabola around its normal axis. Sunlight entering the collector aperture with a normal incidence is concentrated onto a heat receiver located at the focal point. This report is a description and discussion of the control system for Parabolic Dish Concentrator No. 1 (PDC-1) as used at the JPL Parabolic Dish Test Site (PDTS). The tracking action is a discontinuous, start/stop motion with sun sensors for primary control and a computed sun ephemeris for a simultaneous check and cloud passage. Software used with the flux mapper at the solar parabolic dish test site. 1 microfiche. (OCoLC) Paper version: Miyazono, C. Software used with the flux mapper at the solar parabolic dish test site. 1 v. (various pagings)). (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource.
Basically, it’s used to collect and focus sound waves onto a single point (a receiver, transmitter, or a microphone). It’s similar to what a satellite dish does with sound waves. The advantage of a parabolic microphone over other audio listening devices is . Parabolic dish antennas can provide extremely high gains at microwave frequencies. A 2-foot dish at 10 GHz can provide more than 30 dB of gain. The gain is only limited by the size of the parabolic reflector; a number of hams have dishes larger than 20 feet, and occasionally a much larger commercial dish is made available for amateur operation. 4 d = Dish depth d F = Focal area diameter F = Load f = Focal length N = Number of petals s = Parabolic arc length x, y, z, X, Y, Z = Coordinates θ = Rim angle The equation of a paraboloid can be written as: (1) The parabolic arc length s is given by as a function of x: (2) where u is a dummy integration variable along the longitudinal direction of the petal. A parabolic dish test site (PDTS) was established in the California Mojave Desert to carry out work in testing solar point focusing concentrator systems and related hardware. The site was chosen because of its high solar insolation level and year around clear sky conditions. The various facilities and equipment at the PDTS, and the concentrator experiments being performed are described.
Private industry and the U.S. Department of Energy are presently cost sharing the design, manufacture and test of a 25 Kwe parabolic dish Stirling module, known as Vanguard. The Vanguard module achieved a world's record sunlight to electric conversion efficiency of % in February at the Rancho Mirage, California test site. Parabolic Dish CSP Technology Parabolic dish geometry concentrates light in a single focal point, i.e., all sun rays that are parallel to the axis of the parabola are directed towards the central receiver. This allows this type of collector to achieve the highest concentration . Radio Waves - HPDNS - GHz dBi 3' Parabolic Dish, N Female Leather Bound PCTEL Maxrad MPRC GHz dBi 24 inch Parabolic Dish Antenna. In this paper a new technique for parabolic trough mirror alignment based on the use of an innovative theoretical overlay photographic (TOP) approach is described. The technique is a variation on methods used to align mirrors on parabolic dish systems.