scholarly journals Optimization of an asymmetric solar receiver design in high-performance thermosolar plant in synergy with PV-hybrid autonomous heliostats

2020 ◽  
Author(s):  
Stephanie Sigvert Sørensen ◽  
Jens Jørgen Falsig ◽  
Jens Taggart Pelle ◽  
José Fernando Gallego ◽  
Maria Elena Rodriguez ◽  
...  
Keyword(s):  
High Performance ◽  
Receiver Design ◽  
Solar Receiver

scholarly journals A novel low-stress tower solar receiver design for use with liquid sodium

2020 ◽  
Author(s):  
Nicholas Bartos ◽  
Kurt Drewes ◽  
Allan Curtis
Keyword(s):  
Liquid Sodium ◽  
Receiver Design ◽  
Solar Receiver

scholarly journals Thermo-mechanical solar receiver design and validation for a micro gas-turbine based solar dish system

Energy ◽  
2020 ◽  
Vol 196 ◽  
pp. 116929 ◽  
Author(s):  
Lukas Aichmayer ◽  
Jorge Garrido ◽  
Björn Laumert
Keyword(s):  
Gas Turbine ◽  
Receiver Design ◽  
Micro Gas Turbine ◽  
Solar Receiver

Direct Write Techniques for Fabricating Unique Antennas

2000 ◽  
Vol 624 ◽  
Author(s):  
Robert M. Taylor ◽  
Kenneth H. Church ◽  
James Culver ◽  
Steve Eason
Keyword(s):  
Radio Frequency ◽  
Thick Film ◽  
High Performance ◽  
Three Dimensions ◽  
Receiver Design ◽  
Direct Write ◽  
Skill Levels ◽  
Radio Frequency Transmitter ◽  
Physical Dimensions

ABSTRACTThe current fabrication methods used to produce many antennas are limited by variances in the precision and skill levels of individual laborers. These variances slow production and often create inconsistent results. As radio-frequency transmitter and receiver design moves towards higher operating frequencies, the physical dimensions of the supporting antennas decrease. Smaller sizes add new complexities to the fabrication of these antennas. Several designs that may be considered high-performance antennas are difficult to reproduce; many times, they cannot be fabricated at all due to the sophisticated patterning and precision necessary for successful function. Direct-write technologies provide the tools necessary to fabricate unique patterns in two and three dimensions. A demonstration of a directly written antenna, constructed from a silver-based thick-film paste pen-deposited onto cylindrical alumina substrates, is presented for review

Design of “SIREC-1” Wire Mesh Open Volumetric Solar Receiver Prototype

2001 ◽  
Author(s):  
Félix M. Téllez ◽  
Manuel Romero ◽  
María J. Marcos
Keyword(s):  
Development Program ◽  
Mesh Size ◽  
Computer Code ◽  
Operating Conditions ◽  
Wire Mesh ◽  
Test Facility ◽  
Receiver Design ◽  
Two Phases ◽  
Set Up ◽  
Solar Receiver

Abstract The paper describes the design and status of development of a new open volumetric air receiver prototype. This receiver design, though developed in two phases, constitutes one deliverable in a Spanish project carried out by CIEMAT, IAER and INABENSA. The project, called SIREC, is partially financed by the European Funds for the Regional Development program (FEDER). The receiver prototype is now in fabrication and will be tested in the Sulzer volumetric receiver test facility at the Plataforma Solar de Almería (PSA) in Spain. Testing is scheduled for April, 2001. The prototype design includes an air return system and modular absorber elements, to facilitate their replacement and reduce manufacturing costs. The absorber is wire mesh. A computer code has been set up to select the mesh size (wire diameter and mesh distance) and number of screens. A sensitivity analysis for a variety of operating conditions has been carried out with this code to guide the absorber design and its testing.

Receiver/Reactor Concepts for Thermochemical Transport of Solar Energy

1987 ◽  
Vol 109 (3) ◽  
pp. 199-204 ◽  
Author(s):  
R. B. Diver
Keyword(s):  
Solar Energy ◽  
Tubular Reactor ◽  
Chemical Reactor ◽  
Reactor Design ◽  
Heat Transfer Fluid ◽  
Receiver Design ◽  
Pipe Network ◽  
Ambient Temperatures ◽  
Reactor Types ◽  
Solar Receiver

Thermochemical transport of solar energy based on reversible chemical reactions may be a way to take advantage of the high-temperature capabilities of parabolic dishes, while minimizing pipe network heat loss, since energy is transported at ambient temperatures in chemical form. Receiver/Reactor design is a key to making thermochemical transport a reality. In this paper the important parameters for solar receiver and chemical reactor design and how they relate to each other are presented. Three basic receiver/reactor types, applicable to thermochemical receiver design, are identified: (1) Tube Receiver/Reactors have tubular reactor elements which are directly heated by solar energy in the receiver. (2) Indirect Receiver/Reactors use an intermediate heat transfer fluid between the receiver and reactor. (3) Direct Absorption Receiver/Reactors absorb sunlight directly on the reactor catalyst. Advantages, limitations, and risks associated with each design are discussed and examples of those that have been built are given. Each type offers its own set of advantages and risks, and warrant further investigation.

scholarly journals Orthogonal Time Sequency Multiplexing Modulation: Analysis and Low-Complexity Receiver Design

2021 ◽  
Author(s):  
Tharaj Thaj ◽  
Emanuele Viterbo ◽  
Yi Hong
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
High Performance ◽  
Error Control ◽  
Estimation Method ◽  
Low Complexity ◽  
Modulation Scheme ◽  
Receiver Design ◽  
Error Performance ◽  
Frequency Space ◽  
Time Frequency

This paper proposes orthogonal time sequency multiplexing (OTSM), a novel single carrier modulation scheme that places information symbols in the delay-sequency domain followed by a cascade of time-division multiplexing (TDM) and Walsh-Hadamard sequence multiplexing. Thanks to the Walsh Hadamard transform (WHT), the modulation and demodulation do not require complex domain multiplications. For the proposed OTSM, we first derive the input-output relation in the delay-sequency domain and present a low complexity detection method taking advantage of zero-padding. We demonstrate via simulations that OTSM offers high performance gains over orthogonal frequency division multiplexing (OFDM) and similar performance to orthogonal time frequency space (OTFS), but at lower complexity owing to WHT. Then we propose a low complexity time-domain channel estimation method. Finally, we show how to include an outer error control code and a turbo decoder to improve error performance of the coded system.

Thermal behaviour of a multi-cavity volumetric solar receiver: Design and tests results

Solar Energy ◽  
1993 ◽  
Vol 50 (2) ◽  
pp. 113-121 ◽  
Author(s):  
A. Carotenuto ◽  
F. Reale ◽  
G. Ruocco ◽  
U. Nocera ◽  
F. Bonomo
Keyword(s):  
Thermal Behaviour ◽  
Receiver Design ◽  
Solar Receiver

Experimental and Numerical Analyses of a Pressurized Air Receiver for Solar-Driven Gas Turbines

2012 ◽  
Vol 134 (2) ◽  
Author(s):  
I. Hischier ◽  
P. Leumann ◽  
A. Steinfeld
Keyword(s):  
Gas Turbines ◽  
Porous Ceramic ◽  
Energy Conversion Efficiency ◽  
Receiver Design ◽  
Operating Pressure ◽  
Radiative Fluxes ◽  
Monte Carlo Techniques ◽  
Concentrated Solar Radiation ◽  
Solar Energy Conversion Efficiency ◽  
Solar Receiver

A high-temperature pressurized air-based receiver for power generation via solar-driven gas turbines is experimentally examined and numerically modeled. It consists of an annular reticulate porous ceramic (RPC) foam concentric with an inner cylindrical cavity-receiver exposed to concentrated solar radiation. Absorbed heat is transferred by combined conduction, radiation, and convection to the pressurized air flowing across the RPC. The governing steady-state mass, momentum, and energy conservation equations are formulated and solved numerically by coupled finite volume and Monte Carlo techniques. Validation is accomplished with experimental results using a 3 kW solar receiver prototype subjected to average solar radiative fluxes at the CPC outlet in the range 1870–4360 kW m−2. Experimentation was carried out with air and helium as working fluids, heated from ambient temperature up to 1335 K at an absolute operating pressure of 5 bars. The validated model is then applied to optimize the receiver design for maximum solar energy conversion efficiency and to analyze the thermal performance of 100 kW and 1 MW scaled-up versions of the solar receiver.

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