Using electrochemical cycles to efficiently exploit the waste heat from a proton exchange membrane fuel cell

Zhang, Xin; Pan, Yuzhuo; Cai, Ling; Zhao, Yingru; Chen, Jincan

doi:10.1016/j.enconman.2017.04.058

Cited by 47 publications

(4 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Liu 等人 [62,63] 基于有限时间分析方法，研究了不同准则下 TREC 回收余热的性能，分析了电池材料和热交换器对系统最大功率及效率的影响。结果表明，等温系数、比充放电容量越大、内阻越小的材料，最大生态目标函数越大，最大功率越大。由此，Liu 等人 [64] 进一步提出一种由质子交换膜燃料电池子系统和超级电容器子系统组成的新型混合系统(图 S3(a))，该混合系统存在最优电流密度，从而使混合系统的输出功率达到最大，比子系统的输出功率大 6.85%-20.59%，总电效率得到提高，有助于更有效、充分地利用燃料能量。Long 等人 [65] 进一步提出了一种双回路热再生电化学循环系统，采用遗传算法对系统进行了优化分析。结果表明，系统的最大输出功率可达 50.11%，电效率提高了 13.31%，大大高于传统的热再生电化学循环装置。Zhang 等人 [66,67] 则建立了两种混合…”

Section: 本，更是提供了一种利用额外的、丰富的能源的方法，以减少化石能源的消耗。unclassified

Progress on the performances and applications of supercapacitors for thermoelectric conversion

Lian¹,

Dong²,

Gao³

et al. 2022

Chin. Sci. Bull.

View full text Add to dashboard Cite

Section: 本，更是提供了一种利用额外的、丰富的能源的方法，以减少化石能源的消耗。unclassified

Progress on the performances and applications of supercapacitors for thermoelectric conversion

Lian¹,

Dong²,

Gao³

et al. 2022

Chin. Sci. Bull.

View full text Add to dashboard Cite

“…In the second heating (charging) process, the total input energy at high temperature is Q H ( Q H = T H Δ S ). So the efficiency of converting heat to electricity is given below: , while where Q c is the charge capacity of the cell, C p is the total heat capacity of the cell, α cell is the thermopower of the whole cell, R H and R L are internal resistance at high and low temperatures, respectively, and I is the current used in the charging and discharging processes. The efficiency related to Carnot efficiency is shown below: …”

Section: Liquid-based Systemsmentioning

confidence: 99%

“…In the second heating (charging) process, the total input energy at high temperature is Q H (Q H = T H ΔS). So the efficiency of converting heat to electricity is given below: 44,45…”

Section: Liquid-based Systemsmentioning

confidence: 99%

Review of Liquid-Based Systems to Recover Low-Grade Waste Heat for Electrical Energy Generation

Cheng

Dai

et al. 2020

Energy Fuels

View full text Add to dashboard Cite

A large amount of low-grade waste heat from industry is usually discarded. In order to recover the huge amount of waste heat for a sustainable society, extensive efforts have been made to develop high-performance and low-cost thermoelectric generators based on the Seebeck effect of solid semiconductors. In addition, liquid-based heat-to-electricity systems have been developed and demonstrated a good potential for practical applications. This Review aims to provide an overview of the newly developed liquid-based technologies for waste heat recovery, including thermo-electrochemical cells (TECs), thermally regenerative electrochemical cycles (TRECs), and thermo-osmotic energy conversion (TOEC) systems. The working principles of these technologies will be introduced, and the key factors affecting their performance will be discussed. A perspective to discuss the current challenges and application potential of each system and future research directions will be provided.

show abstract

“…The hybrid system exhibited an MEE and MPD 32.04% and 32.18% higher than those of the single dye-sensitized solar cell, respectively. Zhang et al [11] employed TREC to harvest the waste heat from a proton-exchange membrane fuel cell, through which the MPD was enhanced by about 1.11-1.20 times. Guo et al [12] utilized TREC to harness the waste heat from high-temperature polymer electrolyte membrane fuel cell (HT-PEMFC), and the MPD was increased by 15.6% compared to an HT-PEMFC operating alone.…”

Section: Introductionmentioning

confidence: 99%

Performance Potential of a Concentrated Photovoltaic-Electrochemical Hybrid System

Lin,

Xiao,

Chen

et al. 2023

Energies

View full text Add to dashboard Cite

A novel hybrid system model, combining a concentrated photovoltaic cell (CPC) with a thermally regenerative electrochemical cycle (TREC), is proposed. This innovative setup allows the TREC to convert heat from the CPC into electricity. The model incorporates mathematical equations that explicitly define power output, energy efficiency, and exergy efficiency for both the CPC and the TREC individually, as well as for the hybrid system as a whole. The outcomes of the computations reveal that the hybrid system surpasses the performance metrics of the CPC alone. Specifically, the hybrid system achieves a notably higher maximum power density (MPD), maximum energy efficiency (MEE), and maximum exergy efficiency (MMEE) compared to the standalone CPC, with improvements of 392.68 W m−2, 10.33%, and 11.11%, respectively. Through thorough parametric analyses, it was observed that specific factors positively impact the hybrid system’s performance. These factors include higher operating temperatures, increased solar irradiation, specific concentration ratios, and alterations in the internal resistance or temperature coefficient of the TREC. However, it was noted that elevating the operating temperature of the CPC adversely affects the hybrid system’s performance. Furthermore, augmenting solar irradiation and optical concentration ratios amplifies the limiting electric current. Conversely, reducing the internal resistance of the TREC enhances the overall performance of the hybrid system. These discoveries have practical implications for optimizing the design and operation of a functional CPC-TREC hybrid system, providing valuable insights into maximizing its efficiency and effectiveness.

show abstract

Using electrochemical cycles to efficiently exploit the waste heat from a proton exchange membrane fuel cell

Cited by 47 publications

References 33 publications

Progress on the performances and applications of supercapacitors for thermoelectric conversion

Progress on the performances and applications of supercapacitors for thermoelectric conversion

Review of Liquid-Based Systems to Recover Low-Grade Waste Heat for Electrical Energy Generation

Performance Potential of a Concentrated Photovoltaic-Electrochemical Hybrid System

Contact Info

Product

Resources

About