WATER SCIENCE AND TECHNOLOGY
·
2024
·Vol. 89
·期 5
·1357-1381
·
IF 2.5
Alghassab Mohammed A.
The purpose of this study is to explore the architecture and functioning of hybrid solar desalination systems and investigate their potential as a sustainable solution for water purification. The study reveals that solar-powered desalination systems offer a remarkable alternative to traditional methods, as they rely on clean solar energy and produce no noise or sound pollution. In addition, they have demonstrated cost-effectiveness in generating drinking water, especially in desert regions and inaccessible areas. Furthermore, the research highlights the significance of incorporating waste heat energy into the desalination process. Also shows that utilizing waste heat energy can significantly reduce expenses and enhance the overall effectiveness of water desalination. Through an in-depth analysis of the fundamental principles and real-world applications, this study underscores the importance and rationale for implementing hybrid solar desalination systems. By effectively utilizing solar energy, these systems provide a sustainable approach to address water scarcity and ensure the efficient management of water and energy resources. This study emphasizes the fundamental importance of the structure of hybrid solar desalination systems fueled by solar energy in the efficient management of water resources. By combining technological innovations with renewable energy sources, these systems pave the way for a sustainable future. Hybrid solar desalination systems, which rely on solar energy as their major power source for purifying water. This review paper explores the architecture and functioning of hybrid solar desalination systems. This review paper emphasizes the significance and rationale for utilizing hybrid solar desalination systems that rely on solar energy to efficiently handle water and energy resources.
研究领域:
环境科学
·
可再生能源工程
✓ 已验证
DOI
PubMed
高影响因子
Science Advances
·
2023
·Vol. 9
·期 7
·
IF 13.6
Zhe Zhang,Kuo Li,Shangchao Lin,Ruiqi Song,Dehong Yu,Yida Wang,Jingfan Wang,Shogo Kawaguchi,Zhao Zhang,Chenyang Yu,Xiaodong Li,Jie Chen,Lunhua He,Richard Mole,Bao Yuan,Qingyong Ren,Kun Qian,Zhuangli Cai,Jingui Yu,Mingchao Wang,Changying Zhao,Xin Tong,Zhidong Zhang,Bing Li
To harvest and reuse low-temperature waste heat, we propose and realize an emergent concept—barocaloric thermal batteries based on the large inverse barocaloric effect of ammonium thiocyanate (NH4SCN). Thermal charging is initialized upon pressurization through an order-to-disorder phase transition, and the discharging of 43 J g−1 takes place at depressurization, which is 11 times more than the input mechanical energy. The thermodynamic equilibrium nature of the pressure-restrained heat-carrying phase guarantees stable long-duration storage. The barocaloric thermal batteries reinforced by their solid microscopic mechanism are expected to substantially advance the ability to take advantage of waste heat.
研究领域:
能量存储
·
材料科学
·
热力学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Horizons
·
2023
·Vol. 10
·期 12
·5712-5719
·
IF 13.3
Mengmeng Wang,Yunmei Du,Shuangshuang Li,Xiaoli Sun,Bin Li,Yuanxiang Gu,Lei Wang
The N-doping strategy plays a vital role in optimizing electrocatalytic performance, but it often requires high-temperatures accompanied by the emission of irritating gases, which is contrary to the concept of energy saving and environmental protection. Based on this, this work innovatively uses the quenching of waste heat and the non-equilibrium state of materials to realize controllable N-doping. Notably, N dopants stimulate metal-like electroconductivity and accelerate the alkaline HER kinetics by optimizing the electronic structure of Ru2P. Surprisingly, the hydrophilic Ru core and the N-Ru2P shell with a low HER reaction energy barrier synergistically expedite hydrogen release. As anticipated, the current density of N-Ru2P@Ru (963 mA cm−2) is 2.6-fold that of Pt/C (359 mA cm−2) at 150 mV. Overall, the novel N-doping technology greatly simplifies material preparation procedures and reduces energy consumption. Moreover, this unique N-doping strategy provides a new idea for optimizing the catalyst structure and reaction kinetics.
研究领域:
材料科学
·
电催化
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED THERMAL ENGINEERING
·
2020
·
IF 4.725
Xiaoxiao Xia,Zhilu Liu,Song Li
Adsorption-driven heat pumps (AHPs) powered by low-grade waste heat and solar energy are promising to reduce the energy consumption for cooling and heating. Seeking novel high-performing adsorbents of AHPs is the key to improve their cooling/heating performance. Very recently, the potential use of covalent-organic frameworks (COFs) adsorbents of AHPs has won increasing research interests. However, the adsorption cooling/heating performance of COFs under varying working conditions is still unexplored. In this study, COF-5 was synthesized and tested to obtain the adsorption isotherms of ethanol working fluid. For comparison, three commonly used metal-organic frameworks (MOFs), including Cu-BTC, MIL-101(Cr), and ZIF-8, were also investigated. The cooling/heating performance of COF-5/ethanol and MOF/ethanol working pairs was evaluated by mathematical modelling based on the basic thermodynamic cycle of AHPs. The results demonstrated that COF-5 with the high coefficient of performance for cooling/heating (COP C /COP H ) under wide temperature lift (ΔT lift ) outperformed MOFs, especially for cooling.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 22
·5242
·
IF 4.2
Chunlei Li,Shun Li,Long Zhao,Jianming Zhang
Harnessing waste heat from environmental or industrial sources presents a promising approach to eco-friendly and sustainable chemical synthesis. In this study, we introduce a thermoelectrocatalytic (TECatal) system capable of utilizing even small amounts of heat for hydrogen peroxide (H2O2) production. We developed a nanohybrid structure, combining carbon nanotubes (CNTs) and Bi2Te3nanoflakes (Bi2Te3/CNTs), through a one-pot synthesis method. Bi2Te3, as a thermoelectric (TE) material, generates charge carriers under a temperature gradient via the Seebeck effect, enabling them to participate in surface redox reactions. However, the rapid recombination of these charge carriers greatly limits the TECatal activity. In the Bi2Te3/CNTs nanohybrid system, the introduction of CNTs substantially enhances the efficiency of H2O2production, as the strong bonding between CNTs and Bi2Te3, along with the excellent conductivity of CNTs, facilitates charge carrier separation and transport, as confirmed by TE electrochemical tests. This study underscores the significant potential of thermoelectric nanomaterials for converting waste heat into green chemical synthesis.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Dan Gao,Yuanyuan Cao,Zhaohao Li,Niankun Guo,Hongyuan Zhang
The waste heat utilization in the coal-fired plant has always been one of important ways of the energy saving. In this paper, a novel device is constructed by the combination of the ceramic membrane desorption and the flue gas waste heat utilization. In the device, the absorption solution is the “double-cationic” ionic liquid ([TEPA][1-MIm]). Furthermore, experimental results show that the contact angle of the hydrophobic ceramic membrane is 130°. Under ambient temperature conditions, it is observed that at a concentration of 25 % [TEPA][1-MIm] in an ethylene glycol solution, the maximum absorption amount of CO 2 reaches approximately 1.605 mol CO 2 /mol amine. The saturation time of the absorption is about 20 min. As the concentration of ionic liquids increases, the saturation time gradually extends due to an increase in [TEPA][1-MIm] and consequently higher total CO 2 absorption mass. Subsequently, effects of the operating parameters on the desorption rates are analyzed. The contribution of this work is to put forward the idea of utilizing ceramic membranes to recover the waste heat from the flue gas to reduce the CO 2 desorption energy consumption. According to experiments, the overall heat transfer coefficient can reach 20.33 W/(m 2 ·K), and the amount of the recovered waste heat can reach 29.97 W.
研究领域:
能源工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ENERGY
·
2024
·
IF 10.1
Kun Zhang,Xiaochuan Wang,Hongxing Li,Xueting Zhao,Guangzu Zhang,Changlong Tan,Yanxu Wang,Bing Li
Minimizing the utilization of fossil fuels and mitigating CO 2 emissions are two of the most significant worldwide concerns in the current century. The pervasive waste heat not only results in great energy wastage but also poses a great environmental concern. Typical phase change materials (PCMs) suffer from uncontrolled thermal energy utilization as a result of spontaneous heat loss. We provide a new approach to thermal energy storage that challenges the traditional notion of minimizing hysteresis in solid-state refrigeration using PCMs. Instead, we introduce a second stimulus, such as uniaxial stress, magnetic field, electric field, or hydrostatic pressure, to take advantage of the hysteresis phenomenon. This enables us to prevent spontaneous heat loss by implementing a hysteresis energy barrier when the PCMs come into contact with cooler surroundings. Additionally, we may actively regulate the release of thermal energy using a secondary stimulus. The technological viability of these thermal batteries is proven through the utilization of TiNiNb, MnNiCoGeSi, BaTiO 3 , and neopentylglycol, respectively. Notably, by machine-learning-guided design, Ni 50 Ti 40 Zr 8.75 Nb 1.25 alloy was prepared and shown to be an outstanding choice for thermal batteries due to its appropriate and exceptionally broad working temperature range (71 K). Our study offers a new strategy for developing thermal energy storage materials and it is anticipated to greatly enhance the utilization of waste heat.
研究领域:
材料科学
·
能源工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Interfaces
·
2020
·Vol. 7
·期 21
·2000934
·
IF 4.948
Tingting Meng,Yimin Xuan
Waste heat utilization, including solar heat and various industrial waste heats, plays an important role in improving energy efficiency, but current heat-to-electricity conversion technologies can only harvest a little heat energy. A new direct thermally self-chargeable supercapacitor (TCS) system, using the nanoporous carbon electrode in electrolyte mixed with nanoparticles, can simultaneously produce and store electric energy from a low-grade heat source. Moreover, it can simultaneously realize charging and discharging processes. A method of strengthening ions migration by adding nanoparticles into electrolytes is proposed. When heated, due to the Brownian motion of suspended nanoparticles and the interactions among ions and nanoparticles, more ions migrate to the hot electrode, which leads to a high thermal-induced open-circuit voltage (OCV) of 265 mV, under a mild temperature difference of 50 K. This new type of TCS system attains a thermoelectric coefficient of 5.3 mV K −1 and outperforms other conventional TCS systems in which liquid electrolytes are involved.
研究领域:
能源科学
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Huangying Wu,Guopeng Chen,Shangzhen Xie,Kang Xiang,Yipeng Fan,Zhiguang Guo
With the ever-fast development of devices and their high requirements, such as the increased working speed of computers, high energy density of batteries, and high energy transfer efficiency of solar photovoltaic panels, excessive heat is generated, which may lead to performance degradation, system crashes, or even damage. Therefore, effective thermal management systems are needed to control the temperature of the device and avoid energy waste. This study proposes an integrated thermal management system, which contains a hygroscopic hydrogel and a thermoelectric generator (TEG). The hygroscopic hydrogel regenerates by adsorbing water molecules from the atmosphere after losing water, making it reusable and long-lasting without the need for replacement. When a TEG is combined with a 5-mm-thick hydrogel as the thermal management structure, it is able to reduce the surface temperature of the heat source by 32 °C and convert the waste heat to electricity with a 0.20 V output under a 3-W input power for the heat source. Based on this excellent performance, this novel integrated thermal management structure provides a new perspective for future thermal management strategies, particularly for the effective thermal management of heating devices such as solar panels, energy storage batteries, and large electrical equipment.
研究领域:
材料科学
·
能源工程
·
热力学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-19
·
IF 14.7
Poredoš Primož,Gao Jintong,Shan He,Yu Jie,Shao Zhao,Xu Zhenyuan,Wang Ruzhu
Passive solar membrane distillation (MD) is an emerging technology to alleviate water scarcity. Recently, its performance has been enhanced by multistage design, though the gains are marginal due to constrained temperature and vapor pressure gradients across the device. This makes condenser cooling enhancement a questionable choice. We argue that condenser heating could suppress the marginal effect of multistage solar MD by unlocking the moisture transport limit in all distillation stages. Here, we propose a stage temperature boosting (STB) concept that directs low-temperature heat to the condensers in the last stages, enhancing moisture transport across all stages. Through STB in the last two stages with a heat flux of 250 W m −2 , a stage-averaged distillation flux of 1.13 L m −2 h −1 S −1 was demonstrated using an 8-stage MD device under one-sun illumination. This represents an 88% enhancement over the state-of-the-art 10-stage solar MD devices. More notably, our analysis indicates that 16-stage STB-MD devices driven by solar energy and waste heat can effectively compete with existing photovoltaic reverse osmosis (PV-RO) systems, potentially elevating freshwater production with low-temperature heat sources.
研究领域:
能源工程
·
环境科学
·
水资源管理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Qiang Jiang,Yu Shi,Yichao An,Liang Zhang,Jun Li,Xun Zhu,Qiang Liao
The all-aqueous thermally regenerative battery has the advantages of high open-circuit voltage, high power density, and high Coulombic efficiency, providing a promising way for low-temperature waste heat recovery. In this study, a passive membraneless thermally regenerative flow battery driven by capillary force and gravity is proposed to reduce the cost of construction and operation. The feasibility of power generation and the influence of key parameters (height difference, support electrolyte concentration, etc.) on the battery performance are studied. The results showed that a laminar flow induced by a fiber-based microfluidic reactor could effectively separate the catholytes and anolytes, and the battery could achieve long-term power production and obtain a maximum power density of 15.2 mW cm–2. The performance of the battery first increased and then decreased with the inlet height, and the optimal height was 3 mm. This is mainly due to the fact that the inlet height affects the flow rate of the electrolyte, which affects the mass transfer and laminar flow effect in the porous electrode. Within a certain range, as the concentration of the supporting electrolyte increases, the conductivity of the electrolyte is significantly improved, although the flow rate decreases to a certain extent due to the increase in viscosity, resulting in a further improvement in the battery performance. Through the above optimization, the maximum power density of the battery obtained in this study is 24.9 mW cm–2, and the maximum theoretical thermal efficiency can reach 1.26% (the relative Carnot efficiency can reach 10.6%).
研究领域:
能源科学
·
环境工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED THERMAL ENGINEERING
·
2021
·
IF 5.295
Kai-Qi Zhong,Yang Xiao,Xing Lu,Jun Deng,Lan Yin,Yuan Tian,Chi-Min Shu
The current prevention and control countermeasures for underground coal fire principally rely on various cooling and inhibiting methods. However, because tremendous thermal energy is locked in underground coalfield fires, thermal energy extraction and utilisation is a sustainable and environmentally friendly approach. In this study, a waste heat recovery system based on a two-phase closed thermosyphon-assisted thermoelectric generator technique was established for exploiting the thermal reservoir in underground coalfield fires. To enhance thermal extraction, nanofluid working fluid was used. The optimal concentration of the copper oxide (CuO) nanoparticle in the two-phase closed thermosyphons at three heat source temperatures (100, 200, and 300 °C) was found to be 5.0, 5.0, and 10.0 mass%, respectively. Proper addition of CuO enhanced the thermal transfer in the two-phase closed thermosyphon by 27.90%. Furthermore, the increase in the heat source temperature was positively related to the thermal extraction effect of the two-phase closed thermosyphon. With an optimised two-phase closed thermosyphon, the thermoelectric generator system, combined with forced air cooling, provided an output power of 0.1432–3.1360 W with a thermoelectric conversion efficiency of 0.54%–1.83% for heat sources ranging from 100 to 300 °C.
研究领域:
能源工程
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）