scholarly journals Development of cost-effective PCM-carbon foam composites for thermal energy storage

2022 ◽  
Vol 8 ◽  
pp. 1696-1703
Author(s):  
Xin Liu ◽  
Fangming Yang ◽  
Mengbin Li ◽  
Chenggong Sun ◽  
Yupeng Wu
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Cost Effective ◽  
Carbon Foam

scholarly journals Demonstrating Cost Effective Thermal Energy Storage in Molten Salts: DLR’s TESIS Test Facility

2017 ◽  
Vol 135 ◽  
pp. 14-22 ◽  
Author(s):  
Christian Odenthal ◽  
Freerk Klasing ◽  
Thomas Bauer
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Molten Salts ◽  
Cost Effective ◽  
Test Facility

Development and Design Prototype 300 kW-Thermal High-Temperature Particle Heating Concentrator Solar Power System Utilizing Thermal Energy Storage

2014 ◽  
Author(s):  
Matthew Golob ◽  
Sheldon Jeter ◽  
Said I. Abdel-Khalik ◽  
Dennis Sadowski ◽  
Hany Al-Ansary ◽  
...  
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Heat Supply ◽  
Power Conversion ◽  
Cost Effective ◽  
Prototype System ◽  
Solar Heat ◽  
Particle Heating

The advantages of high temperature central receiver particle heating solar heat supply systems in concentrator solar power (CSP) have been recognized in recent years. The use of particulate as the collection medium provides two critical advantages: (1) Ordinary particulate minerals and products will allow higher collection temperatures approaching 1000°C compared with conventional molten salts, which are limited to around 650°C, and (2) the low cost high temperature particulate material can also be used as the storage medium in a highly cost effective thermal energy storage (TES) system. The high operating temperature allows use of high efficiency power conversion systems such as supercritical steam in a vapor power cycle or supercritical carbon dioxide in a Brayton cycle. Alternatively, a lower cost gas turbine can be used for the power conversion system. High conversion efficiency combined with inexpensive TES will yield a highly cost effective CSP system. The 300 kW-th prototype is being constructed as a solar heat supply system only, deferring the power conversion system for later demonstration in a larger integrated CSP system. This paper describes the general design and development efforts leading to construction of the 300 kW prototype system located in the Riyadh Techno Valley development near King Saud University in Riyadh, Saudi Arabia, which is the first sizeable solar heat supply system purposely designed, and constructed as a particle heating system. An important component in a particle heating system is the particle heating receiver (PHR), which should be durable and efficient while remaining cost-effective. A critical enabling technology of the PHR being implemented for this project was invented by researchers on our team. In our version of the PHR, the particulate flows downwards through a porous or mesh structure where the concentrated solar energy is absorbed. The porous structure will reduce the speed of the falling particulate material allowing a large temperature rise on a single pass. The new design will also increase the absorption of solar energy and mitigate convective heat loss and particle loss. Other innovative aspects of this design include low cost thermal energy storage bins and a cost effective particle to working fluid heat exchanger. Certain features of these design elements are subjects of ongoing patent applications. Nevertheless, the overall design and the development process of the prototype system is presented in this paper.

Computational Modeling of Thermal Energy Storage in Rock Beds

2010 ◽  
Author(s):  
Tihomir G. Sivov ◽  
Raul Palacios-Gamez ◽  
B. Rabi Baliga
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Supply And Demand ◽  
Evaluation Criteria ◽  
Cost Effective ◽  
Working Fluid ◽  
Test Problems ◽  
Rock Bed ◽  
Building Engineering

Thermal energy storage (TES) systems are commonly employed for enhancing the efficiency of commercial and residential heating and cooling systems, by matching thermal energy supply and demand during summer-winter, day-night, and peak-off-peak periods. TES in these systems is usually achieved by changing the temperature of materials (sensible systems) and/or inducing solid-liquid phase change (latent heat systems). Such systems are also categorized as seasonal (long-term) and diurnal (short-term). In this work, the focus is on sensible diurnal TES systems consisting of rock beds, with air as the working fluid. They are relatively simple, easy to construct, inexpensive, and quite effective for many solar energy and building engineering applications. Numerous publications on rock-bed TES systems are available, but there is an urgent need for efficient computational methods for designing and optimizing them. The contributions of this work are the following: proposal of cost-effective mathematical models of fluid flow and heat transfer in rock beds; adaptation of a finite volume method (FVM) for the solution of this model; applications of this FVM to two test problems (with analytical solutions) and one demonstration problem; proposal of suitable thermofluid performance evaluation criteria for the rock-bed TES systems of interest; and presentation and discussions of the results.

A cost-effective form-stable PCM composite with modified paraffin and expanded perlite for thermal energy storage in concrete

2018 ◽  
Vol 136 (3) ◽  
pp. 1201-1216 ◽  
Author(s):  
Salman Hasanabadi ◽  
Seyed Mojtaba Sadrameli ◽  
Hassan Soheili ◽  
Hamid Moharrami ◽  
Mohammad Mahdi Heyhat
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Cost Effective ◽  
Expanded Perlite ◽  
Effective Form
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