{"title":"Effects of air pretreatment and regeneration in an adiabatic ionic liquid desiccant dehumidification system","authors":"Jia-Wei Zheng , Yu-Lieh Wu , Yen-Chen Huang , Chih-Hao Chen , Jiun-Jen Chen","doi":"10.1016/j.tsep.2025.104103","DOIUrl":"10.1016/j.tsep.2025.104103","url":null,"abstract":"<div><div>This study designed an adiabatic liquid desiccant dehumidification system where inlet air is precooled and preheated. Depending on the method of air intake into the regenerator, the system operates in an outdoor fresh-air mode or indoor return-air mode. The effects of air mass flow rate, air inlet temperature, inlet humidity ratio, and inlet liquid desiccant temperature on system performance were assessed in both modes. The results indicated the following. Increases in inlet air temperature reduced mass transfer efficiency but increased the coefficient of performance; increases in inlet air humidity ratio increased the vapor pressure difference, thereby improving dehumidification efficiency; and increases in liquid desiccant temperature attenuated moisture absorption capacity. When the outdoor mode was switched to the indoor mode, increases of 6.97 %, 6.87 %, 6.87 %, and 8.79 % were noted in average vapor surface partial pressure, humidity ratio difference, EF, and COP, respectively. This change in air inlet mode significantly enhanced dehumidification effectiveness to levels comparable to those achieved using a conventional corrosive adiabatic LiCl system. Precooling the inlet air enhanced dehumidification, whereas preheating improved the regeneration of ionic liquids and provided more stable inlet air conditions. The proposed system yielded energy savings of 15 % relative to a typical condensation dehumidification system.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104103"},"PeriodicalIF":5.4,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Retraction notice to the articles published in the Special Issue “Recent advances in thermoplastic and thermosetting polymer composites for additive manufacturing and modern industry applications”","authors":"","doi":"10.1016/j.tsep.2025.103959","DOIUrl":"10.1016/j.tsep.2025.103959","url":null,"abstract":"","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 103959"},"PeriodicalIF":5.4,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Song Haiyan , Wu Jitao , Tan Haotian , Xu Jiangtao , Lv Hongqing , Li Yuanlong
{"title":"Optimization methodology for heat exchange architectures in fuel thermal management system based on entransy dissipation theory","authors":"Song Haiyan , Wu Jitao , Tan Haotian , Xu Jiangtao , Lv Hongqing , Li Yuanlong","doi":"10.1016/j.tsep.2025.104100","DOIUrl":"10.1016/j.tsep.2025.104100","url":null,"abstract":"<div><div>Fuel thermal management system is one of the most critical thermal management platforms within modern aircraft. The layout of their heat exchange architectures directly determines thermal management performance. This paper addresses the issue of inaccurate optimization results in heat exchange architecture optimization for fuel thermal management system, which arises from the lack of an optimal fuel distribution strategy. To fully exploit the heat dissipation performance of all potential architectures, a globally optimal fuel distribution strategy is proposed based on the entransy dissipation extremum principle. Furthermore, a concise heat exchange architecture coding method is designed using graph theory to characterize the fuel thermal management system. On this basis, a general heat exchange architecture optimization algorithm is proposed to autonomously generate and arrange heat exchange architectures with multiple temperature constraints. Compared with traditional FTMS fuel allocation strategies, the proposed strategy achieves a fuel saving of 76.36%. Under given operating conditions, eight optimal heat exchange architectures are arranged using five subsystems as examples. The underlying reason for the superior thermal management performance of the optimal heat exchange architecture is demonstrated from the perspective of subsystem temperature margins. Results demonstrate that the proposed fuel allocation strategy and heat exchange architecture optimization algorithm are suitable for solving complex heat exchange architecture optimization problems involving multiple subsystems.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104100"},"PeriodicalIF":5.4,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elias Hashemian Nik , Thomas Schüber , Gerold Macheiner , Vu Hong Thang , Christoph Hochenauer
{"title":"Optimization of the process water distribution for hot water shower sterilization of bags and bottles: A numerical and experimental study","authors":"Elias Hashemian Nik , Thomas Schüber , Gerold Macheiner , Vu Hong Thang , Christoph Hochenauer","doi":"10.1016/j.tsep.2025.104079","DOIUrl":"10.1016/j.tsep.2025.104079","url":null,"abstract":"<div><div>Hot water shower sterilization is crucial for ensuring patient safety in the pharmaceutical production of liquids in bottle- or bag-shaped containers. The same principle of cascading water showers for heat transfer is also used in the food industry for pasteurization. However, there is limited research on validated simulation models to optimize energy use and process time. This study experimentally validates a numerically efficient two-step multiphase Computational Fluid Dynamics (CFD) simulation model for shower heating and cooling on a lab-scale test bench. Flow and film regime analysis, product temperature measurement, and particle image velocimetry (PIV) are conducted to assess the heating and cooling of glass bottles and polypropylene bags. Varied process water flow rates and distribution tray designs were tested. The slowest heating and cooling zones of the bottle were identified at 2% and 98% of the bottle’s filling height, respectively. The temperature deviations between measurements and simulations were mostly within the margin of measurement uncertainty. The novel application of PIV further validated the internal flow characteristics predicted by the simulation model. An optimized water distribution tray design with a reduced hole pitch, tested experimentally and through simulation, significantly reduced the heating and cooling times of the glass bottle at lower volume flow rates. The results of this study, both experimental and numerical, demonstrate that optimized water trays can shorten sterilization or pasteurization cycles even at reduced volume flow rates while also reducing energy consumption.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104079"},"PeriodicalIF":5.4,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Transient thermal–hydraulic modeling of a leakage in a horizontal concentric heat exchanger with RELAP5 and ANSYS-CFX","authors":"A.L. Deghal Cheridi, M. Boumaza, B. Mohammedi","doi":"10.1016/j.tsep.2025.104098","DOIUrl":"10.1016/j.tsep.2025.104098","url":null,"abstract":"<div><div>Heat exchangers are a fundamental component in several plants due to their compact design, high efficiency and significant economic role, as most thermal energy produced or transferred within an installation passes through them. However, unexpected transient conditions, such as fluctuations in flow rates or temperatures, can significantly affect system performance, safety and efficiency. Therefore, understanding their thermal–hydraulic behavior under accidental transient conditions is crucial for process control and to assess their impact on plant components. This study aims to analyze the thermal–hydraulic response of a horizontal concentric tube heat exchanger during a leak scenario. A combined modeling approach was employed, using Relap5 for global thermal–hydraulic analysis and Ansys-CFX for local flow and heat transfer phenomena.The heat exchanger model was developed and validated against experimental data from the literature under both steady-state and transient conditions in counter-current and co-current configurations, showing strong agreement. Simulation results demonstrate that the codes effectively capture the dynamic evolution of key parameters and reveal the significant impact of leakage on flow structure and heat transfer performance. Moreover, this study provides valuable insights for safety assessment, operational control, and system optimization in thermal engineering applications.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104098"},"PeriodicalIF":5.4,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zeinebou Yahya , Ahmedou M. Mahmoud , Vakkar Ali , Osama Khan , Mohd Parvez , Ashok Kumar Yadav
{"title":"Material selection and optimization for hybrid Solar-Thermal plume Systems: A Machine learning approach to boost passive cooling and energy efficiency","authors":"Zeinebou Yahya , Ahmedou M. Mahmoud , Vakkar Ali , Osama Khan , Mohd Parvez , Ashok Kumar Yadav","doi":"10.1016/j.tsep.2025.104097","DOIUrl":"10.1016/j.tsep.2025.104097","url":null,"abstract":"<div><div>This contemporary research investigates a novel combined solar-thermal plume system which achieves passive heat ventilation as an effective method for reducing building cooling energy requirements. The combination of solar-chimneys coupled with a thermal plume enables an enhanced natural convection flow while venting out warm air which improves both ventilation and energy efficiency. The study’s strength lies in the novel integration of adaptive neuro-fuzzy inference system (ANFIS) and k-means clustering for precise material selection, coupled with robust experimental validation under controlled conditions. A comprehensive multi-parameter evaluation ensures accurate performance assessment and practical relevance. Twenty different materials are evaluated based on four key outcomes: daytime thermal gain, night-time cooling efficiency, heat ventilation rate, and energy savings. The experimental setup involved measuring each material’s heat absorption during daylight and cooling effectiveness at night, enabling a multi-faceted evaluation of thermal dynamics. Silica Aerogel emerged as the ideal material, with the optimum outcomes such as daytime thermal gain (914.71 kJ), cooling efficiency (131.07 %), ventilation rate (22.04 m3/hr), and energy savings (72.66 %). Performance comparison and evaluation showed Silica Aerogel to outperform all the other materials, achieving maximum overall efficiency. The research presents opportunities for material enhancement in solar-thermal combinations to create sustainable cooling technology while providing critical data for building energy reduction.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104097"},"PeriodicalIF":5.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 analysis of a double-slope solar still integrated with parabolic trough solar collector using nanofluid","authors":"Volkan Tuğan , Mustafa İnallı , Erdem Işık","doi":"10.1016/j.tsep.2025.104094","DOIUrl":"10.1016/j.tsep.2025.104094","url":null,"abstract":"<div><div>The use of solar energy in the treatment of saline water offers a sustainable and low-cost solution to the increasing global fresh water demand. In this direction, solar still systems separate water vapor from saline water by directly using solar radiation and then condense it to obtain pure water. However, their fresh water productivity is relatively low. Therefore, in this study, the fresh water productivity and thermal efficiency of the double slope solar distillation unit integrated with parabolic trough solar collector, which operates completely on solar energy, were investigated experimentally. In addition, the effect of water-based nanofluid containing multi-walled carbon nanotubes on the performance of the solar still was investigated. All the stills produced were compared in terms of fresh water productivity and thermal efficiency. According to the results obtained from the study, the highest daily productivity was found to be 1963.8 g/m<sup>2</sup>/day, 2008.5 g/m<sup>2</sup>/day, 2592.0 g/m<sup>2</sup>/day and 2937.6 g/m<sup>2</sup>/day for SSSS, DSSS, PTSC integrated DSSS and both NF and PTSC integrated DSSS, respectively. It was observed that the daily productivity of DSSS, DSSS with integrated PTSC, and DSSS with both PTSC and NF were 6.6 %, 42.2 %, and 49.6 % higher than SSSS, respectively. Additionally, it was observed that the thermal efficiency of DSSS using PTSC and NF was lower compared to SSSS due to its larger system area.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104094"},"PeriodicalIF":5.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Arun Kumar Shukla, Ashwini Kumar Yadav, Ravi Prakash
{"title":"Energy and water efficient design of an air-conditioning system for an institutional building","authors":"Arun Kumar Shukla, Ashwini Kumar Yadav, Ravi Prakash","doi":"10.1016/j.tsep.2025.104095","DOIUrl":"10.1016/j.tsep.2025.104095","url":null,"abstract":"<div><div>The present study proposes an energy-efficient air-conditioning system for an institutional building located in north India. The proposed design first includes the reduction in the cooling load of the building through passive retrofitting measures (PRMs) such as the application of commercially available gypsum-based cow dung plaster on walls, installing double-glazed windows, and applying cool paint on the rooftop. Further, it proposes to improve the Coefficient of Performance (COP) of the mechanical air-conditioning system (ACS) by using rainwater cooled condenser available from the building rooftop to save water lost in a cooling tower usually fitted with a water-cooled condenser. The eQuest modelling of the building was done to calculate the base and proposed cooling loads. In both cases, an experiment was also conducted to measure the equivalent thermal conductivity of the wall, roof, and glazing. These measures collectively reduced the cooling load of the building from 175 TR to 125 TR for the peak summer month. Overall, the proposed PRMs contributed to a 28 % reduction in the cooling load of the building. The study includes the design of a dedicated underground Rain Water Harvesting System (RWHS) for the building with a roof catchment area of 1200 m<sup>2</sup>, capable of collecting up to 1.19 million liters of water annually. The RWHS-cooled condenser enhanced the COP by 32 % during peak operating months. The warm water returning from the condenser outlet was cooled through evaporation by a dedicated fountain with a 2 m basin and a height of 4 m. A shallow underground RWHS was designed to store rainwater, which was utilized to cool the condenser. During peak summer conditions, the water temperature in the RWHS was maintained between 22 °C and 28 °C. Combined with passive features and the RWHS cooled condenser, the total energy savings achieved were 110,566 kWh/year, representing a 45 % reduction in overall energy consumption. Furthermore, the building’s energy performance index EPI improves significantly, representing a 55 % reduction with payback period of 3.7 years.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104095"},"PeriodicalIF":5.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abdulilah Mohammad Mayet , Amjad Ali , Ibrahim H. al-Kharsan , Barno Abdullaeva , M.K. Aravindan , Jasgurpreet Singh Chohan , P. Raja Naveen , Ashwin Jacob , Salman Arafath Mohammed , Mohammed Abdul Muqeet
{"title":"Integrated 4E evaluation and optimization of a hybrid solar–biogas gas turbine system for sustainable hydrogen and desalinated water production","authors":"Abdulilah Mohammad Mayet , Amjad Ali , Ibrahim H. al-Kharsan , Barno Abdullaeva , M.K. Aravindan , Jasgurpreet Singh Chohan , P. Raja Naveen , Ashwin Jacob , Salman Arafath Mohammed , Mohammed Abdul Muqeet","doi":"10.1016/j.tsep.2025.104089","DOIUrl":"10.1016/j.tsep.2025.104089","url":null,"abstract":"<div><div>Hybrid energy integration into gas turbine cycles (GTC) has gained attention in recent years, as it improves efficiency and reduces the drawbacks of relying on a single energy source, such as intermittency or high emissions. In this study, a hybrid configuration employing a solar power tower (SPT) and a biogas-fueled combustion chamber is proposed to drive a GTC. The system utilizes the waste heat from the GTC through a combination of an organic Rankine cycle (ORC), a heat recovery steam generator, and a modified Kalina cycle (MKC). Additionally, residual heat from the ORC and MKC is further recovered by a thermoelectric generator and an absorption chiller to enhance overall energy utilization. The electricity generated by the ORC and MKC is directed to a proton exchange membrane electrolyzer and a reverse osmosis desalination unit for the co-production of hydrogen and freshwater, effectively transforming the system into a novel poly-generation layout. A comprehensive mathematical model is developed to evaluate the system from energy, exergy, exergoeconomic, and environmental perspectives. The influence of key parameters on system performance is analyzed, followed by a multi-objective optimization targeting maximum exergy efficiency and minimum total cost rate. In the base scenario, the SPT represents the dominant component in the system, contributing 68.33 % to overall exergy destruction, 75.62 % to the total initial cost, and 68.93 % to the cost associated with exergy destruction. Optimization results yield an exergy efficiency of 30.491 % and a total cost rate of 5832.14 $/h, showing improvements of 4.3 % and 1.8 %, respectively, compared to base case outputs. Under optimal conditions, the system delivers 20,632 kW of electricity, 33,201 kW of heating, 3,003 kW of cooling, along with 6.399 kg/h of hydrogen and 16.07 kg/s of freshwater. Compared to existing designs, the proposed hybrid SPT–biogas GTC configuration demonstrates enhanced efficiency and cost-effectiveness, confirming its potential for integrated production of power, heat, cooling, hydrogen, and desalinated water.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"67 ","pages":"Article 104089"},"PeriodicalIF":5.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}