Receiver Tube Performance Depending on Cleaning Methods

Hermoso, José Luis Navarro; Sanz, N. Martinez

doi:10.1016/j.egypro.2015.03.104

Cited by 12 publications

(2 citation statements)

References 7 publications

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“…It is recommended to clean the receiver using a pressure below 20 bars and demineralized water with a quality under 1 µS/cm while holding the nozzle at a cleaning distance greater than 40 cm from the tube [76]. To find the adequate cleaning method for receiver cleaning, many designs of the cleaning nozzle, in addition to various distances from the tube are attempted in [77]. This study dismissed using a brush and sponge for contact cleaning and favored fiber cloth instead.…”

Section: Receiver Tube Cleaningmentioning

confidence: 99%

A Review of Conventional and Innovative- Sustainable Methods for Cleaning Reflectors in Concentrating Solar Power Plants

et al. 2018

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The severe soiling of reflectors deployed in arid and semi arid locations decreases their reflectance and drives down the yield of the concentrating solar power (CSP) plants. To alleviate this issue, various sets of methods are available. The operation and maintenance (O&M) staff should opt for sustainable cleaning methods that are safe and environmentally friendly. To restore high reflectance, the cleaning vehicles of CSP plants must adapt to the constraints of each technology and to the layout of reflectors in the solar field. Water based methods are currently the most commonly used in CSP plants but they are not sustainable due to water scarcity and high soiling rates. The recovery and reuse of washing water can compensate for these methods and make them a more reasonable option for mediterranean and desert environments. Dry methods, on the other hand, are gaining more attraction as they are more suitable for desert regions. Some of these methods rely on ultrasonic wave or vibration for detaching the dust bonding from the reflectors surface, while other methods, known as preventive methods, focus on reducing the soiling by modifying the reflectors surface and incorporating self cleaning features using special coatings. Since the CSP plants operators aim to achieve the highest profit by minimizing the cost of cleaning while maintaining a high reflectance, optimizing the cleaning parameters and strategies is of great interest. This work presents the conventional water-based methods that are currently used in CSP plants in addition to sustainable alternative methods for dust removal and soiling prevention. Also, the cleaning effectiveness, the environmental impacts and the economic aspects of each technology are discussed.

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Section: Receiver Tube Cleaningmentioning

confidence: 99%

A Review of Conventional and Innovative- Sustainable Methods for Cleaning Reflectors in Concentrating Solar Power Plants

et al. 2018

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“…[7]. Five different cleaning methods have developed and applied by Navarro Hermoso [8] for monitoring the receiver tube performance when placed in a solar field. The article assesses the impact of cleaning processes on the tube and determines the most effective approach.…”

Section: Introductionmentioning

confidence: 99%

Cfd Analysis for Receiver Tube of Solar Parabolic Through Collector

Akhmadov,

Juraboev,

Boltaev

et al. 2024

Preprint

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In this study, a computational fluid dynamic (CFD) analysis for the receiver tube of a parabolic trough solar collector (PTC) is conducted in the COMSOL Multiphysics program. This system consists of PTC system with an aperture area of 4.4 m2 and a transparent mirror is used as a reflector. This work has been carried out to investigate the most effective material for the receiver tube to obtain higher thermal efficiency. The performance of the receiver tube of PTC was evaluated with a three-dimensional model in COMSOL Multiphysics software using 4 different materials. Therminol VP-1 is used as heat transfer fluid (HTF). The boundary conditions were considered those of October 3rd 2020, when the concentration value was C = 23 and the Sun's radiation was constant at around Io=1000 W/m2. The mass flow rate of the heat transfer fluid through the absorber was varied from 0.01 kg/sec to 0.07 kg/sec. The result revels that the copper receiver tube shows good performance for the given mass flow rates of HTF when compared to iron, steel, and aluminum receiver tubes. Maximum HTF temperature of copper receiver tube was 195.71 0C at 0.01 kg/sec, when the HTF temperature of steel receiver tube was relatively low approximately 190.71 0C. The temperature variation of the absorber tube and of the HTF during this process is presented in the discussion section of the article.

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Selective Absorber Coatings and Technological Advancements in Performance Enhancement for Parabolic Trough Solar Collector

2022

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Parabolic trough solar collector systems are the most advanced concentrating solar power technology for large-scale power generation purposes. The current work reviews various selective coating materials and their characteristics for different designs in concentrating solar power. Solar selective absorbing coatings collect solar radiation and convert it to heat. To promote higher efficiency and lower energy costs at higher temperatures requires, this study aims to analyse the fundamental chemistry and thermal stability of some key coatings currently being used and even under investigation to find reasons for differences, information gaps and potential for improvement in results. In recent years, several novel and useful solar absorber coatings have been developed. However, qualification test methods such as corrosion resistance, thermal stability testing and prediction of service life, which have essential technical value for large-scale solar absorbers, are lacking. Coatings are used to enhance the performance of reflectors and absorbers in terms of quality, efficiency, maintenance and cost. Differentiated coatings are required as there are no uniformly perfect materials in various applications, working conditions and material variations. Much more knowledge of the physical and chemical properties and durability of the coatings is required, which will help prevent failures that could not be discovered previously.

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Receiver Tube Performance Depending on Cleaning Methods

Cited by 12 publications

References 7 publications

A Review of Conventional and Innovative- Sustainable Methods for Cleaning Reflectors in Concentrating Solar Power Plants

A Review of Conventional and Innovative- Sustainable Methods for Cleaning Reflectors in Concentrating Solar Power Plants

Cfd Analysis for Receiver Tube of Solar Parabolic Through Collector

Selective Absorber Coatings and Technological Advancements in Performance Enhancement for Parabolic Trough Solar Collector

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