Numerical study of a latent heat storage system adapted to concentrated solar power (CSP) plants at medium temperatures

2019 ◽  
Author(s):  
Abderrahim El Youssfi ◽  
Mohamed Asbik ◽  
Hassan Agalit ◽  
Khadija El Alami ◽  
Reda Boualou
Keyword(s):  
Latent Heat ◽  
Solar Power ◽  
Heat Storage ◽  
Numerical Study ◽  
Storage System ◽  
Concentrated Solar Power ◽  
Latent Heat Storage

scholarly journals Performance modeling and techno-economic analysis of a modular concentrated solar power tower with latent heat storage

2018 ◽  
Vol 217 ◽  
pp. 143-152 ◽  
Author(s):  
Jonathan E. Rea ◽  
Christopher J. Oshman ◽  
Michele L. Olsen ◽  
Corey L. Hardin ◽  
Greg C. Glatzmaier ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Latent Heat ◽  
Performance Modeling ◽  
Solar Power ◽  
Heat Storage ◽  
Concentrated Solar Power ◽  
Latent Heat Storage ◽  
Solar Power Tower

scholarly journals Numerical study of an Evacuated Tube Solar Collector incorporating a Nano-PCM as a latent heat storage system

2021 ◽  
Vol 24 ◽  
pp. 100859
Author(s):  
Raja Elarem ◽  
Talal Alqahtani ◽  
Sofiene Mellouli ◽  
Walid Aich ◽  
Nidhal Ben Khedher ◽  
...  
Keyword(s):  
Latent Heat ◽  
Solar Collector ◽  
Heat Storage ◽  
Numerical Study ◽  
Storage System ◽  
Latent Heat Storage ◽  
Evacuated Tube Solar Collector ◽  
Evacuated Tube

scholarly journals Effective Separation of a Water in Oil Emulsion from a Direct Contact Latent Heat Storage System

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2264 ◽  
Author(s):  
Sebastian Ammann ◽  
Andreas Ammann ◽  
Rebecca Ravotti ◽  
Ludger Fischer ◽  
Anastasia Stamatiou ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Latent Heat ◽  
Direct Contact ◽  
Heat Storage ◽  
Storage System ◽  
Heat Transfer Fluid ◽  
Storage Unit ◽  
Latent Heat Storage ◽  
Oil Emulsion ◽  
Water In Oil Emulsion

The problem of emulsification between Phase Change Material (PCM) and Heat Transfer Fluid (HTF) in direct contact latent heat storage systems has been reported in various studies. This issue causes the PCM to flow out of the storage tank and crystallize at unwanted locations and thus presents a major limitation for the proper operation of such systems. These anomalies become more pronounced when high HTF flow rates are employed with the aim to achieve fast heat transfer rates. The goal of this paper is to find a method which will enable the fast separation of the formed emulsion and thus the uninterrupted operation of the storage unit. In this study, three separation methods were examined and the use of superhydrophobic filters was chosen as the best candidate for the demulsification of the PCM and HTF mixtures. The filter was produced by processing of a melamine sponge with different superhydrophobic adhesives and was tested with emulsions closely resembling the ones formed in a real direct contact setup. The superhydrophobic filter obtained, was able to separate the emulsions effectively while presenting a very high permeability (up to 1,194,980 kg h−1 m−2 bar−1). This is the first time the use of a superhydrophobic sponge has been investigated in the context of demulsification in direct contact latent heat storage.

Volume Sizing for Thermal Storage With Phase Change Material for Concentrated Solar Power Plant

2014 ◽  
Author(s):  
Ben Xu ◽  
Peiwen Li ◽  
Cholik Chan
Keyword(s):  
Power Plant ◽  
Phase Change ◽  
Phase Change Material ◽  
Storage Tank ◽  
Solar Power ◽  
Heat Storage ◽  
Storage System ◽  
Thermal Storage ◽  
Concentrated Solar Power ◽  
Change Material

With a large capacity thermal storage system using phase change material (PCM), Concentrated Solar Power (CSP) is a promising technology for high efficiency of solar energy utilization. In a thermal storage system, a dual-media thermal storage tank is typically adopted in industry for the purpose of reducing the use of the heat transfer fluid (HTF). While the dual-media sensible heat storage system has been well studied, a dual-media latent heat storage system (LHSS) still needs more attention and study; particularly, the sizing of volumes of storage tanks considering actual operation conditions is of significance. In this paper, a strategy for LHSS volume sizing is proposed, which is based on computations using an enthalpy-based 1D model. One example of 60MW solar thermal power plant with 35% thermal efficiency is presented. In the study, potassium hydroxide (KOH) is adopted as PCM and Therminol VP-1 is used as HTF. The operational temperatures of the storage system are 390°C and 310°C, respectively for the high and low temperatures. The system is assumed to operate for 100 days with 6 hours charge and 6 hours discharge every day. From the study, the needed height of the thermal storage tank is calculated from using the strategy of tank sizing. The method for tank volume sizing is of significance to engineering application.

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