Applied Thermal Engineering最新文献

{"title":"Maximizing energy output in PVT systems with triangular-finned solar air collectors","authors":"Mohamed Bechir Ben Hamida ,&nbsp;Abdelkrim Khelifa ,&nbsp;Mohammed El Hadi Attia ,&nbsp;Moataz M. Abdel-Aziz","doi":"10.1016/j.applthermaleng.2025.127247","DOIUrl":"10.1016/j.applthermaleng.2025.127247","url":null,"abstract":"<div><div>Photovoltaic-thermal (PVT) systems face efficiency limitations due to inadequate heat dissipation from PV panels. This work provides the first systematic analysis of triangular fins in PVT air collectors, demonstrating their unique advantages over conventional designs. A 3D CFD model (ANSYS Fluent 2025) analyzed two configurations: a reference model (simple collector) and a modified model (triangular fins) under varying airflow rates (Re = 3000–21000) and solar intensities (200–1000 W/m²). Results show the modified model achieves 17.37 % higher thermal efficiency at Re = 9000, with 11.3 % greater thermal power output at Re = 3000, while maintaining identical electrical efficiency (∼13.66 %). The fins’ impact diminishes at high Re (21000), where forced convection dominates. This work demonstrates that triangular fins optimize heat transfer in PVT systems, offering a practical solution for energy output enhancement. The novelty lies in the systematic evaluation of triangular fins geometric advantages over conventional designs, validated against prior experimental data.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"278 ","pages":"Article 127247"},"PeriodicalIF":6.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A pseudo-transient modeling for developing gear transmission casing with efficient heat dissipation","authors":"Yuxiao Tang ,&nbsp;Xu Qian ,&nbsp;Konghua Yang ,&nbsp;Kunyang Wang ,&nbsp;Luquan Ren ,&nbsp;Chunbao Liu","doi":"10.1016/j.applthermaleng.2025.127300","DOIUrl":"10.1016/j.applthermaleng.2025.127300","url":null,"abstract":"<div><div>The limited heat dissipation performance of the casing restricts the power density growth in gear transmission system without active cooling. Meanwhile, the complex multiphase heat-flow of the casing presents a challenge to the performance evaluation and heat dissipation improvement. To address this bottleneck, pseudo-transient heat-flow coupled modeling and triangular spacer ribs (TSRs) within the casing are proposed to predict multiphase heat-flow performance and enhance heat transfer with less flow friction losses (viscous heat), respectively. The model realizes both transient behavior prediction and steady-state performance evaluation of multiphase heat-flow by the thermal network model assisted CFD model. The results show that TSRs significantly enhance Nusselt coefficient (<em>Nu</em>) and reduce skin friction coefficient (<em>C_f</em>) under all operating conditions. The higher <em>Nu</em> of TSRs benefits from the flow separation and bearing vortices, which increase the near-wall temperature gradient. In addition, the bearing vortices and thicker lubricant layer between TSRs reduce <em>C_f</em> by diminishing momentum exchange. Considering these factors, a full-condition optimization framework based on the reverse entropy weight assignment strategy is constructed to find the configuration parameters with the higher <em>Nu</em> and lower <em>C_f</em> for all operating conditions. Compared without TSRs, the optimized TSRs enhances <em>Nu</em> by 28–42 % under all operating conditions, while reducing <em>C_f</em> by 32–48 %.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"278 ","pages":"Article 127300"},"PeriodicalIF":6.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Systematic comparative analysis of Kern and Bell-Delaware methods for the design of shell-and-tube heat exchangers","authors":"Giovanni Di Bono,&nbsp;Massimo Corcione,&nbsp;Alessandro Quintino","doi":"10.1016/j.applthermaleng.2025.127327","DOIUrl":"10.1016/j.applthermaleng.2025.127327","url":null,"abstract":"<div><div>This study systematically compares the two most widely adopted manual calculation methods for predicting the performance of shell-and-tube heat exchangers: the Kern method and the more accurate, though more complex, Bell–Delaware method. The comparison is carried out across a broad set of cases, considering both identical shell-side geometries and optimized configurations that, for a given tube bundle geometry, minimize the pressure drop while achieving the same target shell-side heat transfer coefficient. The discrepancies between the two methods are analysed in relation to the different empirical correlations they employ. This approach allows for the identification of general trends, the evaluation of how design parameters influence the results, and the extraction of practical insights for researchers and designers. One key finding is that, when possible, increasing the number of sealing strips, rather than the number of baffles, to reach a desired heat transfer coefficient is more effective in minimizing pressure drop. Furthermore, both the ratio of heat transfer coefficients and the ratio of pressure drops predicted by the Bell–Delaware and Kern methods can vary significantly from unity, and both tend to increase monotonically with the normalized baffle spacing.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"278 ","pages":"Article 127327"},"PeriodicalIF":6.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144534193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eco-friendly and cost – effective shape-stabilized composites from egg-shell/PEG for thermal energy storage","authors":"Amira Akrouti ,&nbsp;Abdelwaheb Trigui ,&nbsp;Ammar Hidouri ,&nbsp;Rym Hassani ,&nbsp;Makki Abdelmouleh","doi":"10.1016/j.applthermaleng.2025.127308","DOIUrl":"10.1016/j.applthermaleng.2025.127308","url":null,"abstract":"<div><div>A novel organic–inorganic bio-composite phase change material (BCP) for thermal energy storage was fabricated using eggshell-derived calcium carbonate (ECC), polyethylene glycol (PEG), and graphite (G) via a cost-effective mechanical milling process. A high PEG loading of 90 wt% was achieved while maintaining excellent shape stability and preventing leakage. Chemical compatibility of the BCPs was confirmed through FTIR analysis, indicating no chemical reactions between components. The optimized BCP composition (90 % PEG, 5 % ECC, and 5 % G by weight) demonstrated exceptional thermal stability (169.4 J/g latent heat), reduced supercooling (46.8 % lower than pure PEG), and enhanced shape stability due to synergistic interactions between ECC and graphite. For the first time, the integration of BCPs with thermoelectric generators (TEGs) was demonstrated, achieving a 2.8 V output sustained for 1380 s. This study bridges critical gaps in scalable, eco-friendly PCM development by utilizing waste eggshells and a solvent-free fabrication method, presenting a transformative approach for mid-temperature energy storage applications.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"278 ","pages":"Article 127308"},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review of salt hydrates materials in phase change heat storage and thermochemical heat storage: mechanism, optimization method and application","authors":"Jiaxiang Sun ,&nbsp;Quanchi Dong ,&nbsp;Hui Wu ,&nbsp;Lige Tong ,&nbsp;Li Wang ,&nbsp;Yaroslav Grosu ,&nbsp;Yulong Ding","doi":"10.1016/j.applthermaleng.2025.127291","DOIUrl":"10.1016/j.applthermaleng.2025.127291","url":null,"abstract":"<div><div>The development of phase change heat storage and thermochemical heat storage technologies promotes the rational use of renewable energy. In particular, salt hydrates (SHS), which has dual-phase heat storage capability, i.e., phase change heat storage and thermochemical heat storage, has been widely investigated in various fields. However, SHS suffers from the problems of phase separation and supercooling in phase change heat storage and deliquescent caking in thermochemical heat storage, and has a common problem of corrosion, which hinders its commercialization and a wide practical application. In this paper, we first summarize and analyze the differences between the mechanisms of SHS phase change thermal storage and thermochemical thermal storage, and then conduct a comprehensive analysis of solving the phase separation and subcooling problems of SHS phase change materials by the thickener method, the shaped packaging method, and the nucleating agent method, and summarize the effects, advantages, and disadvantages of these methods. The preparation of composite SHS materials by loading SHS onto different types of porous carriers to overcome the common agglomeration and deliquescence problems of SHS in thermochemical applications is discussed, and the performance of porous carriers in enhancing the cycling stability is explored, and summarizes how to solve the problem of corrosion of metals by SHS. In addition, the performance of SHS in the field of phase change thermal storage such as battery thermal management, building temperature regulation, healthcare and solar energy harvesting, as well as in the field of thermochemistry such as building heating, is summarized, and finally, the future directions of SHS materials in thermal storage are outlined. The purpose of this paper is to provide theoretical basis and practical guidance for the application of SHS in a wider range of fields, and to promote the continuous progress and development of SHS thermal storage technology.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"278 ","pages":"Article 127291"},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early monitoring and warning of overcharge thermal runaway in lithium-ion battery under various charging methods","authors":"Teng Jia ,&nbsp;Ziyao Zeng ,&nbsp;Hang Yu ,&nbsp;Chuyuan Ma ,&nbsp;Junxin Huang","doi":"10.1016/j.applthermaleng.2025.127322","DOIUrl":"10.1016/j.applthermaleng.2025.127322","url":null,"abstract":"<div><div>In order to advance the early warning time window for overcharge-induced thermal runaway in lithium-ion batteries and enhance the accuracy and real-time monitoring of battery safety status, a novel early warning model for overcharge-induced thermal runaway is proposed. Experiments were conducted on the thermal runaway behavior of ternary lithium-ion batteries under various overcharging rates, the effects of constant current constant voltage (CC-CV) overcharge and constant current (CC) overcharge on the thermal runaway behavior of lithium-ion batteries were compared. The results indicate that the internal temperature during CC overcharging is higher than that during CC-CV overcharging. Under the CC-CV charging mode, the temperature differences between the internal and external maximum temperatures at 0.5 C and 7 C overcharges are 55 °C and 29.5 °C, respectively. Under the CC charging mode, the maximum temperature differences between the inside and outside of the battery at 0.5 C and 7 C overcharges reach 75.2 °C and 66.1 °C, respectively. Notably, high-rate CC overcharging (5 C, 7 C) can trigger the opening of the battery’s pressure relief valve, with the maximum internal temperature reaching 115 °C. The characteristic parameters of thermal runaway caused by CC charging were extracted, and a two-level early warning model for overcharge-induced thermal runaway in lithium-ion batteries was established, leveraging the multi-parameter coupling of external temperature, temperature rise rate, and voltage.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"278 ","pages":"Article 127322"},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance characteristics of optimized bi-fluid photovoltaic-thermal solar system: A comparative study of innovative cooling system made of different materials","authors":"K. Harby ,&nbsp;Mohammed El Hadi Attia ,&nbsp;Abdelkrim Khelifa ,&nbsp;Majdi Amin ,&nbsp;Erdem Cuce ,&nbsp;Mohamed Abdelgaied","doi":"10.1016/j.applthermaleng.2025.127283","DOIUrl":"10.1016/j.applthermaleng.2025.127283","url":null,"abstract":"<div><div>High ambient temperatures reduce the efficiency and lifespan of PV solar systems due to cell overheating. Solar PV cooling can prevent this and improve performance, especially in hot regions. This work attempts to develop a novel, economic, and efficient bi-fluid cooling technology to reduce temperature rise and enhance the overall energy output of hybrid PVT systems. The proposed bi-fluid cooling system involves the use of an absorber plate integrated with a locally available wire-on-tube (serpentine-shaped tube) heat exchanger mounted on the back side of the PVT system for cooling water flow. The heat exchanger is also equipped with air passages for air circulation and natural convection cooling. This type of heat exchanger, which uses bi-fluid cooling technique, can significantly enhance the heat dissipation generated by the solar PV cells, improving the overall performance of the system. Three identical cooling systems made of copper (PVT-Cu), aluminum (PVT-Al), and stainless steel (PVT-Steel) were proposed, studied, and compared to achieve optimal system performance. A life cycle cost analysis (LCCA) was also performed, and the data obtained were compared with those of a conventional PV-standard system to evaluate the feasibility and annual performance of the systems. The developed 3D numerical model of the PVT systems integrated with the proposed bi-fluid cooling systems was simulated using Ansys Fluent 2024. The developed numerical model was also validated with experimental data from the previous study. Results showed that the improvement in the average surface temperatures of the proposed PVT-Steel, PVT-Al and PVT-Cu systems was 1.62, 2.61, and 5.27 %. The average daily increase in electrical output of the proposed PVT-Steel, PVT-Al, and PVT-Cu systems was 7.66 %, 13.51 %, and 16.04 % higher. The improvement in electrical efficiency when using the proposed PVT-Steel, PVT-Al, and PVT-Cu systems was approximately 9.14 %, 15.20 %, and 17.93 %, respectively. The lowest levelized cost of energy (LCOE) was achieved by the proposed PVT-Cu system at $0.47 per kWh, followed by PVT-Al ($0.49 per kWh), and finally with PVT-Steel ($0.52 per kWh). The payback time of the three proposed PVT-Cu, PVT-Al, and PVT-Steel systems was reduced by 78.78 %, 59.96 %, and 40.89 %, respectively.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"278 ","pages":"Article 127283"},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144500862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heat transfer enhancement in rectangular ducts with wire coil inserts: Applications in building-integrated CPVT systems","authors":"F.Z. Benouis,&nbsp;A. Egea,&nbsp;A. García,&nbsp;R. Herrero-Martin","doi":"10.1016/j.applthermaleng.2025.127303","DOIUrl":"10.1016/j.applthermaleng.2025.127303","url":null,"abstract":"<div><div>This study evaluates the thermal and hydraulic performance of rectangular ducts equipped with wire coil inserts under non-uniform heat flux conditions, replicating realistic operating environments in building-integrated Concentrated Photovoltaic Thermal (CPVT) systems. The aim is to mitigate localized overheating by improving heat removal from the photovoltaic cells. Experiments were carried out on a 2.5  m long duct with a 23 × 8 mm² cross-section, exposed to concentrated solar fluxes of 16,667 and 25,000  W/m². Water was used as the working fluid, and three wire coil configurations, varying in pitch (7.5–19.3  mm), thickness (0.6–1.4  mm), and diameter (7–7.5  mm), were tested. Performance metrics including PV surface temperature reduction, Nusselt number, and Fanning friction factor were assessed over a wide Reynolds number range (700–20,000). Results show that heat transfer was enhanced by up to 77 %, with a corresponding wall temperature reduction of up to 6 °C. Throughout the entire Reynolds number range, the inserts promoted early turbulence, effectively suppressing the laminar-to-turbulent transition regime observed in the smooth duct. This led to more stable turbulent flow conditions. Among the tested configurations, an optimal insert geometry was identified, offering the best compromise between enhanced heat transfer and pressure drop penalty. Overall, the findings confirm the effectiveness of passive techniques for improving thermal regulation in CPVT systems and address a notable research gap by combining non-circular duct geometry with non-uniform heating, an operating condition rarely explored in existing literature.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"278 ","pages":"Article 127303"},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigations on the thermal properties and thermal adaptability of binary double-peak phase change materials for battery thermal management","authors":"Zhengyang Zhu,&nbsp;Xiaoshan Li,&nbsp;Fan Wu,&nbsp;Cong Luo,&nbsp;Liqi Zhang","doi":"10.1016/j.applthermaleng.2025.127311","DOIUrl":"10.1016/j.applthermaleng.2025.127311","url":null,"abstract":"<div><div>Phase change material (PCM) cooling technology, characterised by a simple system, low cost, and low energy consumption, is regarded as a promising approach for battery thermal management systems (BTMS). However, the application of the conventional single-peak PCMs has been limited due to the narrow melting temperature range and poor adaptability to variable ambient conditions. To address this limitation, this study proposes a strategy to improve the adaptability of BTMS by using binary double-peak phase change materials with a wide transformation temperature range. The thermal storage characteristics of double-peak PCMs were systematically evaluated. Results show that the first endothermic peak originates from the melting of the eutectic structure, whereas the second corresponds to the melting of the remaining component. An enthalpy prediction model was established, achieving a prediction error of less than 5 % across three representative series. Thermal simulations demonstrated that double-peak PCMs offers improved adaptability to varying thermal generation rates and ambient temperatures. Compared to conventional single-peak PCMs, double-peak PCMs more effectively regulated battery temperature, maintaining it below 60 °C even under extreme ambient conditions (50 °C). These findings indicate that the proposed strategy enhances BTMS adaptability and has strong potential for practical application.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"278 ","pages":"Article 127311"},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on cooling and dehumidification performance of a novel radiant-convective terminal based on micro heat pipe array","authors":"Xinglu He ,&nbsp;Zhenhua Quan ,&nbsp;Yunfei Hao ,&nbsp;Zhe Xu ,&nbsp;Wenjie Deng ,&nbsp;Yaohua Zhao","doi":"10.1016/j.applthermaleng.2025.127314","DOIUrl":"10.1016/j.applthermaleng.2025.127314","url":null,"abstract":"<div><div>Conventional radiant terminal systems face limitations such as surface condensation, insufficient cooling capacity, and inability to manage latent loads. These issues complicate air conditioning systems and slow thermal response, making it challenging to achieve efficient cooling and dehumidification simultaneously. This study introduces a novel radiant-convective terminal based on a micro heat pipe array which integrates cooling and dehumidification functions. This design improves heat transfer efficiency and accelerates system response via forced convection. Experiments were conducted to investigate the effects of water supply temperature, water flow rate, and wind speed on the terminal’s cooling and dehumidification performance. Additionally, a quantitative analysis of its performance characteristics was carried out. The results demonstrate that, under forced convection conditions, the thermal response speed of the terminal is significantly enhanced, with the surface temperature stabilizing within approximately 20 min. When the water supply temperature is 8 °C, the water flow rate is 400 L/h, and the wind speed is 1.5 m/s, the cooling capacity reaches 617.1 W/m², with latent heat transfer accounting for 25 %, and the dehumidification capacity achieving 0.44 kg/h. After comparison, the terminal’s unit area cooling capacity is 498 % of the traditional radiant terminal’s, and its dehumidification capacity is 64 % of the integrated cooling and dehumidification terminal’s. Experimental data were used to derive the correlation between cooling capacity and excess temperature, as well as the expression for dehumidification capacity. This study provides theoretical and experimental foundations for designing and optimizing the novel radiant terminal, offering valuable insights for high-efficiency cooling and dehumidification systems.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"278 ","pages":"Article 127314"},"PeriodicalIF":6.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144500876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}