气候变化领域集成服务门户(CCPortal): Thermal energy grid storage using multi-junction photovoltaics

CCPortal

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	17545692
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.
英文关键词	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
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190020
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 & Environmental Science,12(1).
MLA	Amy C.,et al."Thermal energy grid storage using multi-junction photovoltaics".Energy & Environmental Science 12.1(2019).