Thermal Science and Engineering Progress最新文献_第6页

Performance evaluation for additively manufactured heat sinks based on Gyroid-TPMS

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-09 DOI: 10.1016/j.tsep.2025.103499

Mingyi Chen , Yusheng Shi , Lei Yang , Chunze Yan , Bin Su , Hangjie Fu , Zechun Dou , Yanping Chen

{"title":"Performance evaluation for additively manufactured heat sinks based on Gyroid-TPMS","authors":"Mingyi Chen , Yusheng Shi , Lei Yang , Chunze Yan , Bin Su , Hangjie Fu , Zechun Dou , Yanping Chen","doi":"10.1016/j.tsep.2025.103499","DOIUrl":"10.1016/j.tsep.2025.103499","url":null,"abstract":"<div><div>Conventional heat sinks (HSs) usually have a high-temperature rise and a great surface temperature gradient, which is not conducive to the stable operation of the device being cooled. In this work, two types of heat sink with a novel fin structure based on Gyroid-TPMS are designed and manufactured via selective laser melting (SLM). The hydraulic and thermal performances of <em>α</em>1-HS with the original Gyroid cells and <em>α</em>2-HS with the modified Gyroid cells are studied in numerical simulations and experiments under a specific test platform, and compared with the plate-fin HS (PF-HS). The experimental results show that the <em>α</em>2-HS has smaller pressure drops and pump power which are about 60% those of the <em>α</em>1-HS, and the energy efficiency coefficient of the <em>α</em>1-HS is about 60% that of the <em>α</em>2-HS. The <em>α</em>1-HS and <em>α</em>2-HS have lower surface temperature rises and temperature gradients than PF-HS. The <em>α</em>2-HS has more full channels than <em>α</em>1-HS, which can enhance the surface convective heat transfer to obtain a higher surface heat transfer coefficient and a lower thermal resistance. The heat sink efficiency and fin efficiency of the <em>α</em>1-HS and <em>α</em>2-HS are always higher than those of PF-HS. The heat sink efficiency and fin efficiency of <em>α</em>2-HS are higher than those of <em>α</em>1-HS. The research shows that optimizing TPMS structures can improve hydraulic and thermal performance. The methodologies and conclusions in this work may provide a more comprehensive and in-depth performance evaluation for the design and optimization of heat sinks.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103499"},"PeriodicalIF":5.1,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619188","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}

引用次数: 0

Thermal characteristics of a compact cooling system of a powerful LED lighting device based on a spiral heat exchanger and heat pipes

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-08 DOI: 10.1016/j.tsep.2025.103483

D.V. Pekur , Yu.E. Nikolaenko , S.M. Khairnasov , V.M. Sorokin , D.V. Kozak , R.S. Melnyk , A.M. Minyailo

{"title":"Thermal characteristics of a compact cooling system of a powerful LED lighting device based on a spiral heat exchanger and heat pipes","authors":"D.V. Pekur , Yu.E. Nikolaenko , S.M. Khairnasov , V.M. Sorokin , D.V. Kozak , R.S. Melnyk , A.M. Minyailo","doi":"10.1016/j.tsep.2025.103483","DOIUrl":"10.1016/j.tsep.2025.103483","url":null,"abstract":"<div><div>In this paper, a new design of a air-cooling system of a powerful LED lighting device has been developed, which includes the use of eight radially arranged heat pipes to transfer heat from eight COB (Chip-on-Board) matrices to a heat exchange surface made in the form of a spiral heat exchanger. The spiral heat exchanger is cooled by forced air convection and is made of one continuous strip of heat-conducting material, which simplifies its production technology and ensures effective heat removal. Computer simulation made it possible to evaluate the effectiveness of the proposed cooling system for maintaining the temperature of COB matrices within acceptable values. The simulation results show that with a total thermal power of COB matrices of 500 W (62.5 W for each matrix), which is equivalent to an electrical power of about 1000 W, and the use of heat pipes with an effective thermal conductivity of over 2000 W/(m °C), the temperature of COB matrices does not exceed the critical value even with a minimum air flow velocity of 1 m/s and an ambient temperature of + 40 °C. The proposed design of the air cooling system with forced convection effectively ensures heat removal from eight COB matrices, maintaining their operating temperature within acceptable values. This contributes to increased reliability and durability of the LED lighting device while maintaining its compactness. The results obtained indicate the prospects of using spiral exchander and heat pipes with in air-cooling systems for LED devices,with input electrical power of about 1000 W.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103483"},"PeriodicalIF":5.1,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593579","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}

引用次数: 0

Structural damage of CRTS II slab ballastless tracks induced by temperature distribution on viaduct-tunnel transition sections

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-08 DOI: 10.1016/j.tsep.2025.103495

Yang Li , Bingyan Yu , Yang Yang , Fengzhuang Tong , Haiyan Li

{"title":"Structural damage of CRTS II slab ballastless tracks induced by temperature distribution on viaduct-tunnel transition sections","authors":"Yang Li , Bingyan Yu , Yang Yang , Fengzhuang Tong , Haiyan Li","doi":"10.1016/j.tsep.2025.103495","DOIUrl":"10.1016/j.tsep.2025.103495","url":null,"abstract":"<div><div>This paper investigates the structural damage of the CRTS II slab ballastless track incurred by the longitudinal temperature gradient on viaduct-tunnel transition sections. Initially, the study characterizes the temperature distribution of the track on these transition sections using field measurement data. Subsequently, a numerical model representing the nonlinear mechanical properties of slab ballastless tracks on the transition section is developed and validated. The study analyzes the mechanisms of interfacial damage, encompassing interfacial debonding and separation. It also examines the impact of post-installed reinforcement on mitigating track damage on the transition section. Key findings include: 1. Under identical environmental conditions, the longitudinal displacement of track slabs on the transition section can reach up to 81% higher than that of slabs situated on the viaduct. 2. The longitudinal temperature gradient on the transition section can cause coordinated longitudinal movement of multiple slabs and potential splitting of interfaces between structural layers. 3. On the transition section, the vertical displacement of track slabs reinforced with post-installed anchors can be reduced to approximately 45% of that without anchors, highlighting the effectiveness of the anchors. These findings provide valuable insights into the mechanical behavior of tracks on viaduct-tunnel transition sections and offer practical guidance for selecting appropriate track maintenance measures.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103495"},"PeriodicalIF":5.1,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593567","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}

引用次数: 0

Gliding arc plasma effect on thermal characteristics of ammonia/biogas flames

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-08 DOI: 10.1016/j.tsep.2025.103494

Adolfas Jančauskas, Rolandas Paulauskas, Ernest Bykov, Kęstutis Zakarauskas, Ignas Ambrazevičius

{"title":"Gliding arc plasma effect on thermal characteristics of ammonia/biogas flames","authors":"Adolfas Jančauskas, Rolandas Paulauskas, Ernest Bykov, Kęstutis Zakarauskas, Ignas Ambrazevičius","doi":"10.1016/j.tsep.2025.103494","DOIUrl":"10.1016/j.tsep.2025.103494","url":null,"abstract":"<div><div>This study investigates the effects of varying ammonia (20-80 vol% NH<sub>3</sub>) concentrations in biogas on flame chemiluminescence, radiative properties under plasma-assisted combustion at different fuel equivalence ratios (φ). The experimental analysis characterizes the flames’s OH* and NH<sub>2</sub>* emissions, the radiant intensity of CO<sub>2</sub> and H<sub>2</sub>O emitters, and heat flux variations. Research indicates that the emission intensity of OH* and NH<sub>2</sub>* is proportional to the fuel equivalence ratio, while flame height decreases at varying rates. IR spectras (2000–5000 nm) from flames reveal that the main CO<sub>2</sub> and H<sub>2</sub>O radiation sources depend on the ammonia dilution and plasma discharge voltage. It was determined that plasma assistance enhances combustion conditions and expands the flammability limits of NH<sub>3</sub>/biogas mixtures. During plasma-assisted combustion of 40 vol% ammonia-diluted biogas mixture an 18 % increase in H<sub>2</sub>O (2505 nm) emission intensity was determine increasing voltage from 4.6 kV to 8.3 kV and a strong correlation between H<sub>2</sub>O emitter radiation and OH* emission intensity was determined. Besides, a plasma discharge increase from 4.6 kV to 8.3 kV can increase heat flux up to 42 % during plasma-assisted combustion, while increase of NH<sub>3</sub> dilution negatively impacts heat flux without plasma assistance − heat flux decreases from 4 to 5 % by diluting biogas from 20 to 80 vol%.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103494"},"PeriodicalIF":5.1,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609312","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}

引用次数: 0

Geothermal Sourced Trigeneration Plant for Puga Valley: Techno-Economic Analysis and Multi-Objective Optimization

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-07 DOI: 10.1016/j.tsep.2025.103487

Siddharth Ramachandran , Satya Sekhar Bhogilla , Pallippattu Krishnan Vijayan

{"title":"Geothermal Sourced Trigeneration Plant for Puga Valley: Techno-Economic Analysis and Multi-Objective Optimization","authors":"Siddharth Ramachandran , Satya Sekhar Bhogilla , Pallippattu Krishnan Vijayan","doi":"10.1016/j.tsep.2025.103487","DOIUrl":"10.1016/j.tsep.2025.103487","url":null,"abstract":"<div><div>The techno-economic feasibility of a binary geothermal trigeneration plant customized for the Puga Valley, India, was examined for the concurrent generation of power and green hydrogen, in addition to district heating. This study considers the unique geotechnical data of the Puga Valley, including geothermal gradients for individual gauged wells and related cost functions. The primary mover of the trigeneration plant is a dual-loop organic Rankine cycle (ORC), with R123 as the primary working fluid and R125 as the secondary working fluid. The bottoming ORC loop was coupled with a proton-exchange membrane electrolyzer, harnessing its net power to produce green hydrogen. Geothermal resources are used to generate thermal energy for district heating, thereby increasing the overall efficiency of the plant. The overall effectiveness and cost of the system are significantly affected by variations in operational and design factors, such as the temperature, fluid flow rate of the geothermal source, and ORC turbine inlet temperature. An artificial neural network-based multi-objective optimization study was conducted to ascertain the optimum values for the aforementioned parameters. The outcome represents an optimal Pareto curve, with the objective functions being the trigeneration plant’s overall cost rate, electricity yield, and exergy efficiency. The proposed trigeneration plant could simultaneously produce 1.1 MW of electricity, 5.7 kg/h of green hydrogen, and 789.2 kW of thermal energy for the district heat network at a supply temperature of 85 °C at the optimal operating point. The corresponding values for the overall energy efficiency, exergy efficiency, and total cost rate were determined as 17.2 %, 38 %, and 56.8 US$/h, respectively.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103487"},"PeriodicalIF":5.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619190","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}

引用次数: 0

Compact serpentine high head liquid metal electromagnetic pump with dual linear Halbach array

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-07 DOI: 10.1016/j.tsep.2025.103484

Yuqing Li , Nan Li , Xilong Zhang , Zhaosen Yuan , Shousheng Tang , Lei Wang , Zhongshan Deng

{"title":"Compact serpentine high head liquid metal electromagnetic pump with dual linear Halbach array","authors":"Yuqing Li , Nan Li , Xilong Zhang , Zhaosen Yuan , Shousheng Tang , Lei Wang , Zhongshan Deng","doi":"10.1016/j.tsep.2025.103484","DOIUrl":"10.1016/j.tsep.2025.103484","url":null,"abstract":"<div><div>In this study, a novel compact dual linear Halbach array serpentine electromagnetic pump (DLHAS-EMP) for liquid metal is proposed. By optimizing the structural parameters of the dual linear Halbach array (DLHA), a 7-channel DLHAS-EMP with a channel height of 3 mm was designed and fabricated. The pump performance of the DLHAS-EMP was evaluated by numerical and experimental investigations, respectively. The measured results indicate that the pump has an internal resistance of only 0.5 mΩ and can provide a maximum pressure head of 67.0 kPa @ 50 A and a maximum flow rate of 1.0 L/min @ 50 A with a volume of only 49.7 cm<sup>3</sup>. The simulation results show that the performance of the DLHAS-EMP can be effectively regulated by adjusting the height and number of channels. Reducing the height and adding more channels increases the pressure head, while increasing the height and decreasing the number of channels improves the flow rate accordingly. For example, the DLHAS-EMP achieves an impressive static pressure head of 186.8 kPa @ 50 A with a volume of 72.6 cm<sup>3</sup> when the channel height is 2 mm and there are 11 channels. On this basis, an empirical formula was developed to predict the static pressure head of the DLHAS-EMP, with a correction factor <em>k</em> ranging from 0.7 to 0.9. Compared to previously reported electromagnetic pumps, the DLHAS-EMP demonstrates superior performance and is particularly suited to extreme heat dissipation applications involving complex microchannels and specific pumping height requirements.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103484"},"PeriodicalIF":5.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601584","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}

引用次数: 0

Experimental investigation of battery thermal management system based on micro heat pipe array coupled air cooling

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-07 DOI: 10.1016/j.tsep.2025.103493

Guanhua Zhang , Zhongkang Liu , Zhigen Wu , Wei Lu , Qiguo Yang

{"title":"Experimental investigation of battery thermal management system based on micro heat pipe array coupled air cooling","authors":"Guanhua Zhang , Zhongkang Liu , Zhigen Wu , Wei Lu , Qiguo Yang","doi":"10.1016/j.tsep.2025.103493","DOIUrl":"10.1016/j.tsep.2025.103493","url":null,"abstract":"<div><div>Temperature is a key factor affecting the performance of lithium-ion batteries. Controlling the temperature and surface temperature uniformity of batteries operating in both high- and low-temperature environments is crucial. In this study, a battery thermal management system (BTMS) based on micro heat pipe array (MHPA) was developed. A battery preheating module and heat dissipation module were combined in a simple and efficient way. Three cooling methods were studied with the heat dissipation module, <em>i.e</em>., natural cooling, MHPA cooling, and MHPA-coupled air-cooling. At 35 ℃ and a C-rate of 1.0 C, the maximum temperature of the battery module cooled by MHPA-coupled air-cooling was 44.06 ℃, which was much lower than that by natural cooling (70.20 ℃), and the maximum battery surface temperature difference is 2.76 ℃. For the preheating module, the preheating performance of batteries heated under 15 W and 30 W was compared. At 30 W, the battery temperature increased from −20 ℃ to 20 ℃ in just 5.4 mins, with a maximum temperature difference of 4.78 ℃. Both the system preheating module and heat dissipation module showed excellent performance and had little impact on each other. The experimental results showed that the BTMS- MHPA could not only effectively control the battery temperature and reduced the temperature difference under high-temperature heat dissipation, but also achieved fast and stable temperature rise under low-temperature preheating.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103493"},"PeriodicalIF":5.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580247","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}

引用次数: 0

Research on interactive entertainment experience Based on infrared sensing images in basketball training Process: Sports thermal energy simulation

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-07 DOI: 10.1016/j.tsep.2025.103486

Xiaobo Peng , Xi Zhu , Junjun Dong

{"title":"Research on interactive entertainment experience Based on infrared sensing images in basketball training Process: Sports thermal energy simulation","authors":"Xiaobo Peng , Xi Zhu , Junjun Dong","doi":"10.1016/j.tsep.2025.103486","DOIUrl":"10.1016/j.tsep.2025.103486","url":null,"abstract":"<div><div>In the training process, the thermal infrared camera is used to capture the heat energy distribution image of the athlete in real time, and record the relevant training data, such as heart rate, exercise intensity, etc. The image processing and data analysis software is used to analyze the thermal infrared image, extract the key thermal energy distribution features, and analyze the correlation with the training data. Based on the collected data, the mathematical model of athletic heat energy is established, and the accuracy of the model is verified by simulation experiments. Based on thermal infrared images and thermal simulation results, interactive entertainment experiences such as virtual reality (VR) training environments are designed to enhance the fun and engagement of training. The analysis shows that the thermal infrared image can clearly reflect the heat energy distribution of athletes in different training stages. After intense training, the athletes’ muscle areas showed a significant increase in temperature, while during rest, the temperature of these areas gradually decreased. Through comparison and analysis with physiological data such as heart rate, we found that there is a certain correlation between heat energy distribution and athletes’ physical state and fatigue degree. The results show that thermal infrared images can effectively reflect the distribution and change of athletes’ heat energy, and provide important reference information for training.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103486"},"PeriodicalIF":5.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580250","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}

引用次数: 0

Hybrid solar-assisted trans-critical CO2 refrigeration cycle optimization with internal heat exchange for hot climate applications

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-07 DOI: 10.1016/j.tsep.2025.103492

Mohammad Tarawneh, Emad Bani Melhem

{"title":"Hybrid solar-assisted trans-critical CO2 refrigeration cycle optimization with internal heat exchange for hot climate applications","authors":"Mohammad Tarawneh, Emad Bani Melhem","doi":"10.1016/j.tsep.2025.103492","DOIUrl":"10.1016/j.tsep.2025.103492","url":null,"abstract":"<div><div>Energy consumption and environmental sustainability are critical challenges, particularly in cooling systems like the <em>trans</em>-critical CO<sub>2</sub> refrigeration cycle. This study presents a novel approach combining internal heat exchanger modifications with solar PV systems to enhance COP and reduce power in Jordan’s climate. A mathematical model, designed for a nominal refrigeration capacity of 14 kW, was analyzed using Engineering Equation Solver (EES). Solar energy, harnessed through a customized photovoltaic (PV) system tailored to Jordan, powered the cycle. Key parameters studied include power consumption and coefficient of performance (COP) as functions of gas cooler pressure (8000–13000 kPa), evaporation temperature (−15 °C to 15 °C), ambient temperature (28 °C to 35 °C), and IHEX effectiveness (0.2–0.85). Results showed significant performance improvements. At an optimal gas cooler pressure of 9111 kPa, the IHEX achieved a COP enhancement of 45 %. Increasing gas cooler pressure from 8000 to 9111 kPa enhanced COP by 40 %. Lowering ambient temperature from 35 °C to 28 °C improved performance by 73 %. At an evaporation temperature of 5 °C and IHEX effectiveness of 0.8, COP increased by 16 % and 33 % compared to 0 °C and −5°C, respectively. Increasing IHEX effectiveness from 0.2 to 0.85 at 5 °C enhanced COP by 25 %. Experimental validation showed a 4 % average deviation between simulated and measured COP results. The on-grid PV system, designed using PVsyst software, met energy demands, achieving an average energy savings of 44.29 % with the IHEX cycle. These findings demonstrate the potential of combining IHEX and solar PV systems to optimize <em>trans</em>-critical CO<sub>2</sub> refrigeration in hot climates.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103492"},"PeriodicalIF":5.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593577","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}

引用次数: 0

Changes in the expression of sirtuin type 1 (SIRT1) and its downstream pathways following retinal damage induced by blue light-emitting diodes (LEDs): Medical thermal radiation image inspection

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-03-07 DOI: 10.1016/j.tsep.2025.103480

Leilei Lin , Qishan Zheng , Yao Zong , Yanming Dong , Qianying Gao

{"title":"Changes in the expression of sirtuin type 1 (SIRT1) and its downstream pathways following retinal damage induced by blue light-emitting diodes (LEDs): Medical thermal radiation image inspection","authors":"Leilei Lin , Qishan Zheng , Yao Zong , Yanming Dong , Qianying Gao","doi":"10.1016/j.tsep.2025.103480","DOIUrl":"10.1016/j.tsep.2025.103480","url":null,"abstract":"<div><div>With the popularization of electronic products featuring light-emitting diodes (LEDs), such as computers and smartphones, exposure to blue light has substantially increased. The present study aimed to clarify the mechanism underlying blue light-induced retinal injury and protection conferred by sirtuin type 1 (SIRT1) in mouse retinal pigment epithelial cells and human retinal pigment epithelial (ARPE-19) cells. The C57/BL mice for 24 h and ARPE-19 cells for 3 h were exposed to blue and white light (5000 lx). Exposure to the blue light affected the morphology and function of the mouse retinal cells after 24 h, and these effects remained after 6 mon. Blue light exposure on the ARPE-19 cells or mice altered the expression of SIRT1. It also affected the expression of Extracellular Regulated Protein Kinases(ERK), p38, p53, caspase 3, protein kinase C α (PKC-α), protein kinase B(AKT) and Superoxide Dismutase(SOD). Blue light exposure may induce apoptosis by activation of ERK, p38, p53 and caspase 3 signalling pathways and down-regulation of the expression of SOD and Phosphatidylinositol-3-kinase (PI3K)/AKT pathways. SIRT1 may protect against blue light-induced damage via regulation of the above signal transduction pathways and inhibition of oxidative stress.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103480"},"PeriodicalIF":5.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593578","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}

引用次数: 0