Screening of high melting point phase change materials (PCM) in solar thermal concentrating technology based on CLFR

Hoshi, Akira; Mills, David; Bittar, A.; Saitoh, Takeo S.

doi:10.1016/j.solener.2004.04.023

Cited by 183 publications

(68 citation statements)

References 5 publications

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“…Low melting point metals and alloys are relatively very expensive even though they have high thermal conductivity [21]. Table 2 [22].…”

Section: Single Component Phase Change Materialsmentioning

confidence: 99%

Review of PCMS and heat transfer enhancement methods applied in parabolic trough solar plants thermal storage systems

Muhammad¹

2018

Nig. J. Tech.

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Solar thermal power generation requires a cost effective thermal storage system. The existing two tank system is very expensive due to the storage material inventory. The use of phase change materials (PCMs) offers higher storage density. A review of potential PCMs was conducted in order to come up with commercially available ones having suitable properties. Most available PCMs have low thermal conductivity making heat transfer enhancement necessary for power applications. The various methods of heat transfer enhancement in latent heat storage systems were also reviewed systematically. The review showed that three commercially-available PCMs are suitable in the operating temperature range of parabolic trough plants. Many heat transfer enhancement methods have been investigated in the literature but the use of aluminium fins is the most promising in the temperature range of 250-330 o C. Many eutectic mixtures of materials have potential for use but discrepancies exist in their reported melting temperature and latent heat of fusion.Keywords: Latent heat, high temperature, thermal conductivity enhancement 1. INTRODUCTION Solar thermal power generation is one the most sustainable and renewable source of electricity. It has the potential of fulfilling the world's electricity needs due to the availability of solar energy in sufficient quantity in various regions of the world [1 -3]. Various solar thermal technologies have been developed over the years for the generation of electricity [4]. The parabolic dish [5 -7] power tower [8,9] and the parabolic trough [10 -12] are the most advanced and have been commercialized. The parabolic trough technology using synthetic oil as the heat transfer fluid (HTF) with operating temperature range between 290 and 400 o C is the most matured and cost effective technology for capacities <200 MW. This can partly be attributed to the experience gained in the operation and maintenance of the 354 MW Solar Electric Generating Station (SEGS) plants for over two (2) decades [4,13]. Most commercial solar plants in operation and under construction are of the parabolic trough technology [9]. The stable and sustainable operation of a solar thermal plant requires a back-up thermal energy source in order to produce thermal energy when that from the sun is insufficient. For cost effective operation there is also the need to avoid energy wastage when the

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“…Low melting point metals and alloys are relatively very expensive even though they have high thermal conductivity [21]. Table 2 [22].…”

Section: Single Component Phase Change Materialsmentioning

confidence: 99%

Review of PCMS and heat transfer enhancement methods applied in parabolic trough solar plants thermal storage systems

Muhammad¹

2018

Nig. J. Tech.

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“…Various materials have been addressed in the literature for both sensible and latent heat storage systems based on their thermo-physical properties (Bauer et al, 2010;Hoshi et al, 2005). CSP plant with more than 16 h of thermal storage using two-tank molten salt storage technology is operational in Spain (ANDASOL II).…”

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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“…Williams stated that improved chemistry methods were needed to produce high-purity chloride salts for corrosion studies. It has been reported that melting point and heat capacity increase in the following order: nitrates, chlorides, carbonates, and fluorides (Hoshi et al, 2005).…”

Section: Background Of Pcm Materialsmentioning

confidence: 99%

High-Temperature Phase Change Materials (PCM) Candidates for Thermal Energy Storage (TES) Applications

Gomez¹

2011

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Screening of high melting point phase change materials (PCM) in solar thermal concentrating technology based on CLFR

Cited by 183 publications

References 5 publications

Review of PCMS and heat transfer enhancement methods applied in parabolic trough solar plants thermal storage systems

Review of PCMS and heat transfer enhancement methods applied in parabolic trough solar plants thermal storage systems

Solar Thermal Power Sector

High-Temperature Phase Change Materials (PCM) Candidates for Thermal Energy Storage (TES) Applications

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