Analysis of the experimental behaviour of a 100 kWth latent heat storage system for direct steam generation in solar thermal power plants

Bayón, Rocío; Rojas, Esther; Valenzuela, Loreto; Zarza, Eduardo; Leon, J.M. Ponce de

doi:10.1016/j.applthermaleng.2010.07.011

Cited by 106 publications

(40 citation statements)

References 6 publications

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“…A few studies (Bayón et al, 2010;Laing et al, 2011 andBahl, C. et al, 2009) report different thermal storage systems for direct steam generation. Bahl et al (2009) proposes a three-part storage system for a direct steam generation device using concrete and PCM.…”

Section: Storage Technology and Hybrid Plant Configurationmentioning

confidence: 99%

Solar Thermal Power Sector

Viswanathan¹

2015

Proceedings of the Indian National Science Academy

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Solar power will play a significant role in India's future energy mix. In addition to be able to provide process heat, concentrated solar power (CSP) plays a unique role in India's energy production because of its potential to use hybrid technologies with biomass or fossil fuels. Thermal energy storage is another aspect of solar thermal technology which helps provide dispatchable and base-load power. The low pressure steam available at the outlet of the power turbine can be utilized for other processes such as air-conditioning and thermal desalination. At high temperatures that can be brought about by concentrating solar thermal technology, hydrogen gas can be produced which serves as a clean fuel. Despite many advantages, much more needs to be done to scale-up CSP sustainably. Innovation and indigenization can address some of the barriers that pose challenges for the development of CSP market in India.

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Section: Storage Technology and Hybrid Plant Configurationmentioning

confidence: 99%

Solar Thermal Power Sector

Viswanathan¹

2015

Proceedings of the Indian National Science Academy

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“…Moreover, different parameters such as foil pitch, distance between tubes, foil thickness, tube radius, tube wall temperature were evaluated to analyze the effect of the geometry on heat transfer and discharge time. be implanted in LHTS of thermal solar power plants [2,11,12]. Pincemina et al used in their work three different types of industrial graphite to get the thermal conductivity enhancement [2].…”

Section: Thermal Conductivity Enhancement Of Pcmsmentioning

confidence: 99%

“…The results of this work showed that the presence of graphite within the PCM induces small reduction in latent heat (from 5% to 28% depending upon the type and size of graphite flakes), no significant change in phase change temperature, but a decrease in phase change temperature variation. In the work presented by Bayón et al a latent heat thermal storage prototype was tested under real working conditions with steam produced by a parabolic-trough collector [11]. This prototype contained KNO 3 /NaNO 3 eutectic mixture as phase change material (PCM) and expanded graphite fins arranged in a "sandwich configuration" (Fig.…”

Section: Thermal Conductivity Enhancement Of Pcmsmentioning

confidence: 99%

Advances in phase change materials for thermal solar power plants quality

Fernández¹,

Estébanez²,

Pérez³

et al. 2011

REPQJ

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Abstract. Thermal solar energy offers a huge opportunity to reduce fuel dependency and environmental impact created by fossil fuel consumption. One of the main disadvantages of this renewable energy is its intermittence which decreases thermal solar power plants performance. In order to reduce cost electricity is necessary to create thermal solar plants which include thermal storage. There are different options of thermal storage: sensible, latent and chemical heat. It has been demonstrated that latent heat could store large amount of energy per unit mass. Moreover, latent heat storage could store fusion heat at a constant temperature which is the phase transition temperature of the phase change materials (PCM). However, these materials have a critical limitation that needs to be resolved in order to reduce operation cost of solar plants. This limitation is their low heat conductivity. This paper gathers the main solutions that are being analyzed in order to increase the possibilities to use PCMs in a high temperature thermal storage that is essential to develop optimum thermal solar power plants.

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“…Indeed while for oilbased CSP plants a 2-tanks molten salt sensible heat storage system has become a wide-spread standard, for the DSG solar plants various system solutions have been proposed, but all of them are still at the pilot plant level [2,3].…”

Section: Objectivesmentioning

confidence: 99%