Experimental investigation on potential of a concentrated photovoltaic-thermoelectric system with phase change materials

被引：108
|
作者：
Cui, Tengfei [1 ]
Xuan, Yimin [1 ,2 ]
Yin, Ershuai [1 ]
Li, Qiang [1 ]
Li, Dianhong [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Energy & Power Engn, Nanjing, Jiangsu, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Nanjing, Jiangsu, Peoples R China
来源：
ENERGY | 2017年 / 122卷
基金：
中国国家自然科学基金;
关键词：
Solar energy; Phase change material; Hybrid generation system; Photovoltaic cells; Thermoelectric generator; HYBRID SYSTEM; PERFORMANCE ANALYSIS; POWER-GENERATION; ELECTRICAL LOAD; PEAK POWER; EFFICIENCY; DESIGN; OPTIMIZATION; SIMULATION; MANAGEMENT;
D O I：
10.1016/j.energy.2017.01.087
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Since the influence of temperature on the conversion efficiencies of photovoltaic (PV) cells and thermoelectric (TE) generators are totally different and opposite, the system operating temperature becomes a key parameter which significantly determines the utilization efficiency of the common PV-TE system on solar energy. In order to make the PV-TE system obtain higher energy utilization efficiency, phase change material (PCM) is incorporated to construct a novel PV-PCM-TE hybrid system to maintain the system operating at the ideal working temperature. The performance of such a novel hybrid system is experirnentally studied corresponding to a number of practical working conditions. The temperature, efficiency, and output power of the hybrid system are compared with those of the pure PV system under the same circumstance. The effects of the optical concentrations ratio and cooling approaches on the conversion efficiency of the hybrid system are experimentally investigated. The whole conversion efficiencies of the hybrid system incorporated with TE generators with different values of dimensionless thermoelectric coefficient (ZT) are discussed. The present work reveals that such a hybrid system possesses a promising potential on the full-spectrum utilization of solar energy. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：94 / 102
页数：9
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