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Title: Experimental Demonstration of a Latent Heat Storage System for Dispatchable Electricity

Abstract

Modern electric grids that use intermittent renewables require energy storage to maintain reliability. Many potential solutions exist, but latent heat thermal energy storage shows particularly high potential for low cost grid scale energy storage. In this paper, we present the design and initial experimental results for a lab-scale prototype of a novel latent heat thermal storage system. This version of our prototype used 50 kg of aluminum-silicon alloy as a phase change material, and a novel valved thermosyphon concept to control heat flow from a thermal storage tank to thermoelectric generators for dispatchable electricity production. Our results validate the system: the thermal storage system was able to receive heat input, evenly distribute heat to and from the phase change material with small temperature gradients, and controllably dispatch heat to a heat engine for electricity generation on demand. With the basic principle of this technology demonstrated, our next step will be to evaluate and improve system efficiency.

Authors:
 [1];  [1];  [1];  [1];  [2];  [2]; ORCiD logo [2];  [2];  [3];  [4];  [2];  [2]
  1. Colorado School of Mines
  2. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  3. Marlow Industries, Inc.
  4. Bucknell University
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1487321
Report Number(s):
NREL/CP-5H00-72963
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at SolarPACES 2017: International Conference on Concentrating Solar Power and Chemical Energy Systems, 26-29 September 2017, Santiago, Chile
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 25 ENERGY STORAGE; energy storage; latent heat; thermal storage

Citation Formats

Rea, Jonathan E., Oshman, Christopher, Hardin, Corey L., Singh, Abhishek, Alleman, Jeffrey L, Glatzmaier, Gregory C, Parilla, Philip A, Olsen, Michele L, Sharp, Jeff, Siegel, Nathan P., Ginley, David S, and Toberer, Eric. Experimental Demonstration of a Latent Heat Storage System for Dispatchable Electricity. United States: N. p., 2018. Web. doi:10.1063/1.5067116.
Rea, Jonathan E., Oshman, Christopher, Hardin, Corey L., Singh, Abhishek, Alleman, Jeffrey L, Glatzmaier, Gregory C, Parilla, Philip A, Olsen, Michele L, Sharp, Jeff, Siegel, Nathan P., Ginley, David S, & Toberer, Eric. Experimental Demonstration of a Latent Heat Storage System for Dispatchable Electricity. United States. doi:10.1063/1.5067116.
Rea, Jonathan E., Oshman, Christopher, Hardin, Corey L., Singh, Abhishek, Alleman, Jeffrey L, Glatzmaier, Gregory C, Parilla, Philip A, Olsen, Michele L, Sharp, Jeff, Siegel, Nathan P., Ginley, David S, and Toberer, Eric. Thu . "Experimental Demonstration of a Latent Heat Storage System for Dispatchable Electricity". United States. doi:10.1063/1.5067116.
@article{osti_1487321,
title = {Experimental Demonstration of a Latent Heat Storage System for Dispatchable Electricity},
author = {Rea, Jonathan E. and Oshman, Christopher and Hardin, Corey L. and Singh, Abhishek and Alleman, Jeffrey L and Glatzmaier, Gregory C and Parilla, Philip A and Olsen, Michele L and Sharp, Jeff and Siegel, Nathan P. and Ginley, David S and Toberer, Eric},
abstractNote = {Modern electric grids that use intermittent renewables require energy storage to maintain reliability. Many potential solutions exist, but latent heat thermal energy storage shows particularly high potential for low cost grid scale energy storage. In this paper, we present the design and initial experimental results for a lab-scale prototype of a novel latent heat thermal storage system. This version of our prototype used 50 kg of aluminum-silicon alloy as a phase change material, and a novel valved thermosyphon concept to control heat flow from a thermal storage tank to thermoelectric generators for dispatchable electricity production. Our results validate the system: the thermal storage system was able to receive heat input, evenly distribute heat to and from the phase change material with small temperature gradients, and controllably dispatch heat to a heat engine for electricity generation on demand. With the basic principle of this technology demonstrated, our next step will be to evaluate and improve system efficiency.},
doi = {10.1063/1.5067116},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}

Conference:
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