Autorenbild.

Jet Propulsion Laboratory

Autor von Voyager 1 Encounters Saturn

213+ Werke 437 Mitglieder 153 Rezensionen

Über den Autor

Bildnachweis: Aerial view of the Jet Propulsion Laboratory [credit: NASA]

Werke von Jet Propulsion Laboratory

Voyager 1 Encounters Saturn (1980) 15 Exemplare
Voyager encounters Jupiter (1979) 13 Exemplare
Pioneer Saturn Encounter (1979) 8 Exemplare
JPL closeup 2 Exemplare
To Uranus and Beyond (1987) 1 Exemplar
JPL 101 (2002) 1 Exemplar
Ranger 1964. 1 Exemplar

Zugehörige Werke

Getagged

Wissenswertes

Gebräuchlichste Namensform
Jet Propulsion Laboratory
Rechtmäßiger Name
Jet Propulsion Laboratory
Andere Namen
JPL
Geschlecht
n/a
Nationalität
USA
Wohnorte
La Cañada Flintridge, California, USA

Mitglieder

Rezensionen

ABSTRACT:
Though lumber drying is only one of many processes that a piece of wood goes through from the time it leaves the stump until it becomes a chair leg, more energy is used in this process than any of the others. Approximately .5 kWh of electrical and 2500 Btu (.7 kWh) of thermal energy is used in drying each board foot of furniture grade lumber. For construction grade lumber such as pine 2 x 4's, less electrical energy but more thermal energy is needed. The total thermal energy used in drying lumber in the United States per year is approximately 10^14 Btu. Though drying conditions vary with different woods (drying temperatures vary from 110 to 240 F), the process is basically the same for all kiln drying. For this reason, the kiln industry as a whole will be very interested in a solar heated kiln experiment.

The particular kiln facility that was used in designing the solar heating system presented herein, includes two modern side-by-side horizontal flow kilns. The facility is owned by the J.A. LaCour Kiln Service, Inc., and is located in a Canton, Mississippi,industrial park which contains many other wood related industries (furniture making, telephone poles, pulpwood, etc.) and about ten other kilns. Canton is located 20 miles north of Jackson, Mississippi, and is easily reached by commercial airlines and a 30 minute auto trip.

The design configuration selected consists of 2,500 sq ft of collectors and is a "sawtooth" arrangement with reflectors. The heat transfer and storage medium is water with a storage capacity of 40,000 lbm. Heat is transferred to the kiln air by means of fin pipe heat exchangers in the kiln. The controls for the solar heating systems can provide heat to either kiln or both simultaneously. However, it is planned to operate only one kiln on solar energy during most of the test period for a side-by-side comparison with a fossil fueled kiln. This system will provide 44% of the energy requirements of one kiln at the pro-posed site in Canton, 40% in Omaha, and 54% in Albuquerque.
… (mehr)
 
Gekennzeichnet
SandiaCSP | Feb 2, 2023 |
ABSTRACT:
A survey of 67 firms who had received U.S. Department of Energy funding for the development of solar-thermal energy systems (STES) was carried out in the summer of 1981. The purpose of the survey was to document the current state of technology development and future marketing plans, evaluate the effect of the Department of Energy Solar-Thermal Technology (STT) program in accelerating development of solar-thermal energy systems, and assess the response to possible discontinuation of the program. Of the 67 firms contacted, 54 were still involved in the development solar-thermal energy systems, while 13 were no longer working on these technologies.… (mehr)
 
Gekennzeichnet
SandiaCSP | Jan 16, 2023 |
ABSTRACT:
The concept to use satellite solar power stations as energy sources for earth application was proposed by Dr. Peter Glaser of Arthur D. Little, Incorporated, in 1968. A feasibility study of the concept, with simultaneous identification of key issues, was sponsored by the National Aeronautics and Space Administration (NASA) in 1972. Additional studies are currently in progress under joint sponsorship of NASA and the Energy Research and Development Administration (ERDA).

As part of the concept assessment, NASA in May of 1974 requested the Jet Propulsion Laboratory (JPL) to initiate development of a data base for candidate future terrestrial power systems in order to evaluate the proposed satellite power systems. The terrestrial power plant types included likely fossil and nuclear energy systems and solar energy systems which would be available around the year 2000. Data development included system performance, operations, cost and impact. NASA also requested JPL to conduct an initial comparison of the earth-based and space-based energy configurations, employing the terrestrial power system data developed at JPL and the orbital power system data being developed concurrently by the Marshall Space Flight Center (MSFC) and the Johnson Space Center (JSC).

This report summarizes the work performed by JPL to provide a data base for candidate future terrestrial power systems and presents a preliminary comparison of these systems with a satellite photovoltaic power system.
… (mehr)
 
Gekennzeichnet
SandiaCSP | Jan 16, 2023 |
ABSTRACT:
The NASA Office of Energy Programs is presently conducting a study of the potential utility of a large orbital central power station as a possible means to help meet our country's demands for electricity. As a part of this study, called the Comparative Assessment of Orbital and Terrestrial Central Power Systems, JPL has been directed to perform a survey of potential terrestrial solar energy conversion systems as well as likely advanced fossil and nuclear power systems. As part of this effort, energy storage systems are being evaluated to determine their applicability to electric utilities. One of these systems is the underground storage of hydrogen. Its applicability is governed by techno-economic considerations associated with underground storage in depleted gas and oil fields, artificially created salt caverns, aquifers, mined caverns, and natural caverns or caves. Methods of generating hydrogen, other storage options, and hydrogen-fueled power generation systems are also assessed. Implementation options involving issues such as electric versus gas transmission and hydrogen-air versus hydrogen-oxygen power generation are delineated in terms of cost tradeoffs. Favorable regions within the lower forty-eight states for the different types of underground storage options are presented and assessed in terms of their proximity to large industrial load centers, major chemical industry users of hydrogen, and to the southwestern region having the highest insolation. A potential far term use of particular interest to the comparative assessment study involves storage of energy from large solar energy complexes. The availability and location of underground storage could bear on plant siting considerations and the data is viewed in this context.… (mehr)
 
Gekennzeichnet
SandiaCSP | Jan 16, 2023 |

Dir gefällt vielleicht auch

Nahestehende Autoren

Statistikseite

Werke
213
Auch von
3
Mitglieder
437
Beliebtheit
#55,995
Bewertung
3.8
Rezensionen
153
ISBNs
4

Diagramme & Grafiken