Electro/photo to heat conversion system based on polyurethane embedded   graphite foam

doi:10.1016/j.apenergy.2015.01.022

CORC > 北京大学 > 工学院

	Electro/photo to heat conversion system based on polyurethane embedded graphite foam
	Chen, Renjie ; Yao, Ruimin ; Xia, Wei ; Zou, Ruqiang
刊名	APPLIED ENERGY
	2015
关键词	Graphite foam Phase change material Polyurethane Energy conversion and storage THERMAL-ENERGY STORAGE PHASE-CHANGE MATERIALS VISIBLE-LIGHT CARBON NANOTUBE PERFORMANCE EVALUATION CHANGE COMPOSITES CROSS-LINKING CONDUCTIVITY ENHANCEMENT DRIVEN
DOI	10.1016/j.apenergy.2015.01.022
英文摘要	Organic phase change materials (PCMs) have exhibited many promising potentials for thermal energy conversion and storage, but they are still confronted with many technical bottlenecks for practical application, such as low conductivity, leakage during phase transition process, and lack of functionality. In this article, a highly-efficient electro/photo to heat conversion system of polyurethane@graphite foam (PU@GF) phase change composites was successfully fabricated through in situ polymerization of polyethylene glycol (PEG) in GF. The obtained PU presents solid-solid phase transition behavior that is different from the solid-liquid phase change of original PEG, which can prevent PU from leakage even if it was loaded in micrometer pores in the GF during application. On the other side, PU can improve the thermal stability and decrease the overcooling degree of the composites in effect. Excellent conductive network was provided by the GF, with which the light absorption and thermal conductivity of the composites were enhanced dramatically. Consequently, the solid-solid phase change composites can effectively store electricity or sunlight energy. The electro-heat storage efficiency of the composites can exceed 80% at 1.2 or 1.4 V, meanwhile, the photo-heat storage efficiency can close to 67% under simulated solar illumination. This result presents the highest efficiency for electro-to-heat conversion by PCMs techniques driven by a quite low voltage up to now, and will give rise to a new expectation of functional PCM application for energy conversion and storage. (C) 2015 Elsevier Ltd. All rights reserved.; National Natural Science Foundation of China [51322205, 21371014]; New Star Program of Beijing Committee of Science and Technology [2012004]; Ministry of education program for New Century Excellent Talents of China [NCET-11-0027]; SCI(E); EI; ARTICLE; rzou@pku.edu.cn; 183-188; 152
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/417188]
专题	工学院
推荐引用方式 GB/T 7714	Chen, Renjie,Yao, Ruimin,Xia, Wei,et al. Electro/photo to heat conversion system based on polyurethane embedded graphite foam[J]. APPLIED ENERGY,2015.
APA	Chen, Renjie,Yao, Ruimin,Xia, Wei,&Zou, Ruqiang.(2015).Electro/photo to heat conversion system based on polyurethane embedded graphite foam.APPLIED ENERGY.
MLA	Chen, Renjie,et al."Electro/photo to heat conversion system based on polyurethane embedded graphite foam".APPLIED ENERGY (2015).