Exergy and Thermoeconomic Analyses of Central Receiver Concentrated Solar Plants Using Air as Heat Transfer Fluid

Toro, Claudia; Rocco, Matteo V.; Colombo, Emanuela
November 2016
Energies (19961073);Nov2016, Vol. 9 Issue 11, p1
Academic Journal
The latest developments in solar technologies demonstrated that the solar central receiver configuration is the most promising application among concentrated solar power (CSP) plants. In CSPs solar-heated air can be used as the working fluid in a Brayton thermal cycle and as the heat transfer fluid for a Rankine thermal cycle as an alternative to more traditional working fluids thereby reducing maintenance operations and providing the power section with a higher degree of flexibility To supply thermal needs when the solar source is unavailable, an auxiliary burner is requested. This configuration is adopted in the Julich CSP (J-CSP) plant, operating in Germany and characterized by a nominal power of 1.5 MW, the heat transfer fluid (HTF) is air which is heated in the solar tower and used to produce steam for the bottoming Rankine cycle. In this paper, the J-CSP plant with thermal energy storage has been compared with a hybrid CSP plant (H-CSP) using air as the working fluid. Thermodynamic and economic performances of all the simulated plants have been evaluated by applying both exergy analysis and thermoeconomic analysis (TA) to determine the yearly average operation at nominal conditions. The exergy destructions and structure as well as the exergoeconomic costs of products have been derived for all the components of the plants. Based on the obtained results, the thermoeconomic design evaluation and optimization of the plants has been performed, allowing for improvement of the thermodynamic and economic efficiency of the systems as well as decreasing the exergy and exergoeconomic cost of their products.


Related Articles

  • Experimental investigations of a closed-loop oscillating heat pipe. Dmitrin, V.; Maidanik, Yu. // High Temperature;Sep2007, Vol. 45 Issue 5, p703 

    Results are given of experimental investigations of an oscillating heat pipe (OHP) made in the form of a closed-loop coil of a copper capillary tube with an inside diameter of 2 mm, 4.5 m long, and filled with water in an amount of 50% of internal volume. The starting characteristics of OHP are...

  • Advances in High Temperature Titanium-Water Heat Pipe Technology. Rosenfeld, John H.; Gernert, Nelson J. // AIP Conference Proceedings;2007, Vol. 880 Issue 1, p129 

    A development program has been completed to design, assemble, and test high-performance titanium/water heat pipes for spacecraft heat rejection applications. Three variations of wick designs were designed, assembled, tested, and delivered to NASA GRC. The heat pipe length was 115.5 cm, the outer...

  • Model of heat transfer in the stagnation point of rapidly evaporating microjet. Mikielewicz, Dariusz; Muszyński, Tomasz; Mikielewicz, Jarosław // Archives of Thermodynamics;2012, Vol. 33 Issue 1, p139 

    The paper presents investigation into the single water microjet surface cooling producing evaporating film. Reported tests were conducted under steady state conditions. Experiments were conducted using the nozzle size of 70 and 100 μm respectively. In the course of investigations obtained...

  • Effect of pore size on heat flows in thermal treatment of foam glass. Shutov, A. I.; Alekseev, S. V.; Yashurkaev, T. V. // Glass & Ceramics;Jul2007, Vol. 63 Issue 7/8, p213 

    The results of studying the specifics of heat transfer processes in porous heat-insulating materials at high temperatures are described. The effect of the pore size on the type of heat transfer in glass-based porous materials is considered; recommendations on methods for analyzing heat transfer...

  • High Temperature Variable Conductance Heat Pipes for Radioisotope Stirling Systems. Tarau, Calin; Walker, Kara L.; Anderson, William G. // AIP Conference Proceedings;3/16/2009, Vol. 1103 Issue 1, p22 

    In a Stirling radioisotope system, heat must continually be removed from the GPHS modules, to maintain the GPHS modules and surrounding insulation at acceptable temperatures. Normally, the Stirling converter provides this cooling. If the Stirling engine stops in the current system, the...

  • Active Thermal Insulation of High-Temperature Surfaces of Technological Equipment Based on Packed Beds. Teplitsky, Yu. S.; Pitsukha, E. A.; Borodulya, V. A.; Malevich, V. L. // Applied Physics Research;Oct2014, Vol. 6 Issue 5, p82 

    Models of heat transfer in infiltrated packed beds of large low-heat conducting particles that are used as active thermal insulation of high-temperatures surfaces of technological equipment have been developed. A criterion of active thermal insulation involving main geometrical and thermal...

  • Contact Heat Conductivity Under Conditions of High-Temperature Heat Transfer in Fibrous Heat-Insulating Materials. Grinchuk, P. // Journal of Engineering Physics & Thermophysics;Mar2014, Vol. 87 Issue 2, p481 

    A mathematical model for calculating the effective heat conductivity of fibrous materials at high temperatures and variable density has been suggested and substantiated. Consideration is focused basically on accounting for heat conduction in the solid phase of a fibrous material. The calculated...

  • Heat Transfer Suppression in Flow Around a Rotating Circular Cylinder at High Prandtl Number. Sufyan, M.; Manzoor, S.; Sheikh, N. // Arabian Journal for Science & Engineering (Springer Science & Bu;Nov2014, Vol. 39 Issue 11, p8051 

    Forced convection heat transfer across a 2D circular cylinder rotating at constant speed is investigated. Numerical simulations are carried out at constant values of Reynolds number in the range of 80-160. The non-dimensional rotation rate, α, is examined up to a maximum value of 5.3 for...

  • The effect of non-zero thermal radiation transmissivity of the aluminized mylar film on the thermal performance of super-insulation. Ohmori, T.; Yamamoto, A.; Nakajima, M. // AIP Conference Proceedings;2002, Vol. 613 Issue 1, p1573 

    The heat transfer analysis of multi-layer insulation (MLI) studied before does not consider that radiant energy is transmitted through the thin aluminum coatings of the insulation films. The radiation heat flux is analyzed only between the adjacent films. The thermal radiation coefficient of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics