NDLI: Progress in Thermal Energy Storage Modeling

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Bharathan, Desikan Greg, C. Glatzmaier
Copyright Year	2009
Abstract	Economic analyses for concentrated solar power (CSP) systems indicate that the cost of electricity can be reduced through the use a molten-salt thermal energy storage system (TES). Use of a thermocline in the tanks to keep cold and hot fluids separate in the tank has been proposed to further reduce the cost for TES to about $30/kWh thermal. This paper studies the details for molten-salt storage where the tank is filled with nominally 1-inch-size quartzite rocks and 1/4-inch sand particles. These filler materials are envisioned to occupy 75% of the tank’s volume. Experiments at Sandia National Laboratories indicate that these filler materials are compatible with the molten salt, and a well-established thermocline can be maintained in these tanks. The National Renewable Energy Laboratory attempts to look into the next level for the tank design, modeling heat transfer between solid filler and molten salt. Loose filler materials exert added hoop stresses in the tank that are likely to be unmanageable in the long run because of thermal cycling. Structured brick-like stacked shapes are needed that can maintain their structure without requiring sidewall support for the fill material. Large tanks with a volumetric capacity of 100,000 kL maintain a reasonable thermocline during charge and discharge. We report on progress in computational fluid dynamics (CFD) modeling of such tanks. However, for operational convenience for the plant, we suggest the use of multiple tanks.
Sponsorship	Advanced Energy Systems Division and Solar Energy Division
Starting Page	597
Ending Page	603
Page Count	7
File Format	PDF
ISBN	9780791848906
DOI	10.1115/ES2009-90119
e-ISBN	9780791838518
Volume Number	ASME 2009 3rd International Conference on Energy Sustainability, Volume 2
Conference Proceedings	ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences
Language	English
Publisher Date	2009-07-19
Publisher Place	San Francisco, California, USA
Access Restriction	Subscribed
Subject Keyword	Economic analysis Computational fluid dynamics Bricks Fillers (materials) Thermal energy storage Modeling Design Sands Fluids Storage Renewable energy Concentrating solar power Particulate matter Rocks Hoop stress Shapes Heat transfer
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in