Design optimization of a tubular solar receiver with a porous medium

Lim, Sang Hoon; Kang, Yong-Heack; Lee, Hyunjin; Shin, Seungwon

doi:10.1016/j.applthermaleng.2013.10.025

Cited by 38 publications

(15 citation statements)

References 14 publications

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“…One operational strategy is to control the flow rate of the heat transfer fluid, such that POM is stabilized. Using POM facilitates the effective comparison of various receivers operating in different environments [16,19].…”

Section: Experiments Results and Discussionmentioning

confidence: 99%

“…The pressure difference applied before and after the receiver did not mean that the pressure drop was due to the receiver. The numerical results of Lim et al [16] help assess the order of the magnitude of the pressure drop. The direct normal insolation (DNI) was measured with a pyrheliometer.…”

Section: Configuration Of the Experimental Equipmentmentioning

confidence: 97%

“…3 [15,16]. A partition wall is installed in the middle of the tube, and the cavity is attached to the front side, such that it is exposed to solar radiation energy.…”

Section: Design Of Compressed Air Receiversmentioning

confidence: 99%

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Experimental evaluation of the performance of solar receivers for compressed air

Kim

Lee

et al. 2014

J Mech Sci Technol

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A challenging issue that arises in achieving a combined cycle with concentrated solar power technology is the development of a solar receiver for compressed air. A solar receiver transfers heat from concentrated solar radiation to compressed air so that the air temperature is sufficiently increased to drive an air turbine. Using a simple modular extension, we have developed three solar receivers for compressed air based on the concept of the tubular receiver. Conventional tubular receivers are generally applied in liquid fluids, such as water or molten salt. Cavities and extended surfaces were designed and incorporated into the developed tubular receivers to improve the heat transfer to air. The receivers were also subjected to performance evaluation tests, which were conducted in the solar furnace of the Korea Institute of Energy Research, with ambient air compressed at 5 bar and expressed in terms of outlet temperature and receiver efficiency. Test results indicated the thermal characteristics of the three solar receivers for their proper use and facilitated the comparison of their performances. The results also provided a guideline to construct and simulate a solar receiver system composed of a series of receiver modules. The problems identified in this study can help improve the solar receiver system.

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Section: Experiments Results and Discussionmentioning

confidence: 99%

Section: Configuration Of the Experimental Equipmentmentioning

confidence: 97%

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Experimental evaluation of the performance of solar receivers for compressed air

Kim

Lee

et al. 2014

J Mech Sci Technol

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“…Neber and Lee [7] designed a high temperature cavity receiver using silicon carbide. Then a scaled test section was placed at the focal point of a parabolic dish collector and reached a maximum temperature of 1248 K. Lim et al [8] designed a tubular solar receiver with a porous medium and found the optimal design point of the proposed solar receiver concept to heat up compressed air. The results of this study offer a valuable design guideline for future manufacturing processes.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the energy and exergy performance for a pressurized volumetric solar receiver

Zhu

Wang

et al. 2016

Applied Thermal Engineering

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h i g h l i g h t sPerformance of a pressurized volumetric solar receiver is experimentally discussed. Energy and exergy analysis is performed during a two-hour period in the morning. The efficiency of the solar receiver is maintained at around 60% under steady state. The highest exergy efficiency and energy efficiency is approximately 36% and 87%. a b s t r a c tThis article presents an experimental investigation of the heat transfer characteristics as well as energy and exergy performance for a pressurized volumetric solar receiver under variable mass flow rate conditions. During a two-hour period of continuous operation in the morning, the solar irradiance is relatively stable and maintained at approximately 600 W/m 2 , which is beneficial for analyzing the energy and exergy performance of the solar receiver. Experimental results show that the mass flow rate fluctuation has insignificant effect on the solar receiver outlet temperature, whereas the mass flow rate plays an important role in the solar receiver power, energy efficiency and exergy efficiency. The efficiency of the solar receiver is normally above 55% with the highest efficiency of 87%, and under steady state operating conditions the efficiency is maintained at approximately 60%. A very low value of the heat loss factor (0.014 kW/K) could be achieved during the current steady state operating conditions. The highest exergy efficiency is approximately 36%. In addition, as the temperature difference increases, the impact of the exergy factor increases. The highest exergy factor is 0.41 during the entire test.

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“…The WF can be heated either by the contact with the cavity wall or by the surface of the tubes in which the WF passes through [25][26][27][28]. Tubular configurations are the most common layout arrangement for this kind of receiver.…”

Section: Introductionmentioning

confidence: 99%

Charge and Discharge Analyses of a PCM Storage System Integrated in a High-Temperature Solar Receiver

Giovannelli

Bashir

2017

Energies

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Solar Dish Micro Gas Turbine (MGT) systems have the potential to become interesting small-scale power plants in off-grid or mini-grid contexts for electricity or poly-generation production. The main challenging component of such systems is the solar receiver which should operate at high temperatures with concentrated solar radiations, which strongly vary with time. This paper deals with the design and the analysis of a novel solar receiver integrated with a short-term storage system based on Phase Change Materials to prevent sudden variations in the maximum temperature of the MGT working fluid. Particularly, the charge and discharge behavior of the storage system was analyzed by means of Computational Fluid Dynamic methods to evaluate the potentiality of the concept and the component capabilities. Achieved results were highly satisfactory: the novel solar receiver has a good thermal inertia and can prevent relevant fluctuations in the working fluid temperature for 20-30 min.

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Design optimization of a tubular solar receiver with a porous medium

Cited by 38 publications

References 14 publications

Experimental evaluation of the performance of solar receivers for compressed air

Experimental evaluation of the performance of solar receivers for compressed air

Experimental study of the energy and exergy performance for a pressurized volumetric solar receiver

Charge and Discharge Analyses of a PCM Storage System Integrated in a High-Temperature Solar Receiver

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