scholarly journals High Temperature Line Focus Central Receiver System cost and performance objectives

1978 ◽  
Author(s):  
J. V. Coggi
Keyword(s):  
High Temperature ◽  
System Cost ◽  
Central Receiver ◽  
Temperature Line ◽  
Receiver System ◽  
And Performance ◽  
Line Focus

A Design Method for Optimizing Collector Systems for Small Solar Central Receivers

1980 ◽  
Vol 102 (4) ◽  
pp. 240-247 ◽  
Author(s):  
R. B. Bannerot ◽  
C. L. Laurence
Keyword(s):  
Power Systems ◽  
Design Method ◽  
Cost Effective ◽  
Field Configuration ◽  
Circular Aperture ◽  
Plant Design ◽  
Central Receiver ◽  
Receiver System ◽  
And Performance ◽  
The Individual

The design methodology for the determination of the optimal heliostat field designs is presented in detail for a small solar central receiver. The optimization process is reviewed. Cost and performance models are discussed. To illustrate the design process a representative small solar central receiver system is optimized. Cost factors were developed from current prices. The individual heliostat design and cost data were taken from the design of the ten megawatt-electric Barstow Pilot Plant design. A north field configuration, steel guyed tower and a tilted, circular aperture, cavity receiver were utilized. It is demonstrated that solar central receiver systems are more cost effective at higher power levels, above those considered here. But this fact has nothing to do with relative cost effectiveness of competing small, stand-alone, power systems.

Optical Properties of Select Particulates After High-Temperature Exposure

2014 ◽  
Author(s):  
Jonathan Roop ◽  
Sheldon Jeter ◽  
Said I. Abdel-Khalik ◽  
Clifford K. Ho
Keyword(s):  
Optical Properties ◽  
High Temperature ◽  
High Temperatures ◽  
Viable Option ◽  
Solar Absorptance ◽  
High Temperature Exposure ◽  
Central Receiver ◽  
Total Hemispherical Emittance ◽  
Receiver System ◽  
Temperature Exposure

One increasingly viable option for high temperature concentrator solar power (CSP) is a central receiver system with a particle heating receiver (PHR). A PHR system uses suitable particulates to capture and store energy. It is expected that the particles will be sustained at high temperatures (in the range of 300°C or 400°C to 700°C or 800°C or even 1000°C) on most typical days of plant operation, so there is interest in how the particle optical properties might change after prolonged high-temperature exposure. This paper presents the results from experiments conducted over a 5-month period in which samples of various types of particulates including silica sands and alumina proppants were exposed to high temperatures for extended periods of time. The reflectance of a bed of particles was measured at room temperature in 8 wavelength bands using the 410-Solar reflectometer device developed by Surface Optics Corporation. The infrared emittance was determined using the ETS-100 emissometer instrument, also developed by Surface Optics Corporation [1,2]. Particles were heated to 950°C and 350°C, and measurements were recorded at intervals during the exposure so that trends in the optical properties over time could be observed. From the measured data, the total solar absorptance and total hemispherical emittance at high temperature were computed; these results are also presented.

scholarly journals Optical analysis of a multi-aperture solar central receiver system for high-temperature concentrating solar applications

2020 ◽  
Vol 28 (25) ◽  
pp. 37654
Author(s):  
Lifeng Li ◽  
Bo Wang ◽  
John Pye ◽  
Roman Bader ◽  
Wujun Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Optical Analysis ◽  
Central Receiver ◽  
Receiver System ◽  
Solar Applications

scholarly journals Laboratory-Scale Processing and Performance Assessment of Ti–Ta High-Temperature Shape Memory Spring Actuators

2021 ◽  
Author(s):  
A. Paulsen ◽  
H. Dumlu ◽  
D. Piorunek ◽  
D. Langenkämper ◽  
J. Frenzel ◽  
...  
Keyword(s):  
High Temperature ◽  
Shape Memory ◽  
Detrimental Effect ◽  
Wire Drawing ◽  
Fast Heating ◽  
Heating And Cooling ◽  
Arc Melting ◽  
Ω Phase ◽  
And Performance

AbstractTi75Ta25 high-temperature shape memory alloys exhibit a number of features which make it difficult to use them as spring actuators. These include the high melting point of Ta (close to 3000 °C), the affinity of Ti to oxygen which leads to the formation of brittle α-case layers and the tendency to precipitate the ω-phase, which suppresses the martensitic transformation. The present work represents a case study which shows how one can overcome these issues and manufacture high quality Ti75Ta25 tensile spring actuators. The work focusses on processing (arc melting, arc welding, wire drawing, surface treatments and actuator spring geometry setting) and on cyclic actuator testing. It is shown how one can minimize the detrimental effect of ω-phase formation and ensure stable high-temperature actuation by fast heating and cooling and by intermediate rejuvenation anneals. The results are discussed on the basis of fundamental Ti–Ta metallurgy and in the light of Ni–Ti spring actuator performance.

Design and Evaluation of the Fresnel-Lens Based Solar Concentrator System Through a Statistical-Algorithmic Approach

2018 ◽  
Author(s):  
Hassan Qandil ◽  
Weihuan Zhao
Keyword(s):  
High Temperature ◽  
High Efficiency ◽  
Incident Light ◽  
Thermal Analyses ◽  
Solar Spectrum ◽  
Chromatic Aberration ◽  
Fresnel Lens ◽  
Optimum Number ◽  
Solar Concentrator ◽  
Receiver System

A novel non-imaging Fresnel-lens-based solar concentrator-receiver system has been investigated to achieve high-efficiency photon and heat outputs with minimized effect of chromatic aberrations. Two types of non-imaging Fresnel lenses, a spot-flat lens and a dome-shaped lens, are designed through a statistical algorithm incorporated in MATLAB. The algorithm optimizes the lens design via a statistical ray-tracing methodology of the incident light, considering the chromatic aberration of solar spectrum, the lens-receiver spacing and aperture sizes, and the optimum number of prism grooves. An equal-groove-width of the Poly-methyl-methacrylate (PMMA) prisms is adopted in the model. The main target is to maximize ray intensity on the receiver’s aperture, and therefore, achieve the highest possible heat flux and output concentration temperature. The algorithm outputs prism and system geometries of the Fresnel-lens concentrator. The lenses coupled with solar receivers are simulated by COMSOL Multiphysics. It combines both optical and thermal analyses for the lens and receiver to study the optimum lens structure for high solar flux output. The optimized solar concentrator-receiver system can be applied to various devices which require high temperature inputs, such as concentrated photovoltaics (CPV), high-temperature stirling engine, etc.

scholarly journals A Design Study of an Off-axis Paraboloid Shaping Method for Central Receiver System Heliostats

2015 ◽  
Vol 69 ◽  
pp. 158-167 ◽  
Author(s):  
L. Meng ◽  
Z. You ◽  
S. Dubowsky ◽  
B. Li ◽  
F. Xing
Keyword(s):  
Design Study ◽  
Central Receiver ◽  
Receiver System
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