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DOI | 10.1039/c8ee02341g |
Thermal energy grid storage using multi-junction photovoltaics | |
Amy C.; Seyf H.R.; Steiner M.A.; Friedman D.J.; Henry A. | |
发表日期 | 2019 |
ISSN | 1754-5692 |
起始页码 | 334 |
结束页码 | 343 |
卷号 | 12期号:1 |
英文摘要 | As the cost of renewable energy falls below fossil fuels, the key barrier to widespread sustainable electricity has become availability on demand. Energy storage can enable renewables to provide this availability, but there is no clear technology that can meet the low cost needed. Thus, we introduce a concept termed thermal energy grid storage, which in this embodiment uses multi-junction photovoltaics as a heat engine. We report promising initial experimental results that suggest it is feasible and could meet the low cost required to reach full penetration of renewables. The approach exploits an important tradeoff between the realization of an extremely low cost per unit energy stored, by storing heat instead of electricity directly, and paying the penalty of a lower round trip efficiency. To understand why this tradeoff is advantageous, we first introduce a general framework for evaluating storage technologies that treats round trip efficiency, as well as cost per unit energy and power, as variables. © 2019 The Royal Society of Chemistry. |
语种 | 英语 |
scopus关键词 | Costs; Electric energy storage; Fossil fuels; Renewable energy resources; Thermal energy; Cost per unit; Energy grids; Full penetration; Multi-junction photovoltaics; On demands; Renewable energies; Renewables; Storage technology; Energy efficiency; alternative energy; electricity; energy storage; fossil fuel; photovoltaic system; sustainability; thermal power; trade-off |
来源期刊 | Energy and Environmental Science
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/162364 |
作者单位 | Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States; National Renewable Energy Laboratory, Golden, CO 80401, United States; School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States; Heat Lab, Georgia Institute of Technology, Atlanta, GA 30332, United States |
推荐引用方式 GB/T 7714 | Amy C.,Seyf H.R.,Steiner M.A.,et al. Thermal energy grid storage using multi-junction photovoltaics[J],2019,12(1). |
APA | Amy C.,Seyf H.R.,Steiner M.A.,Friedman D.J.,&Henry A..(2019).Thermal energy grid storage using multi-junction photovoltaics.Energy and Environmental Science,12(1). |
MLA | Amy C.,et al."Thermal energy grid storage using multi-junction photovoltaics".Energy and Environmental Science 12.1(2019). |
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