Applied Thermal Engineering最新文献_第5页

Experimental investigation on the effect of air temperature on the anti-frosting effect of wire mesh based on space radiation

IF 6.1 2区工程技术

Applied Thermal Engineering Pub Date : 2025-03-26 DOI: 10.1016/j.applthermaleng.2025.126316

Lizhen Huang , Mengjie Song , Seyyed Hossein Hosseini , Fan Gao , Zekang Zhen , Ningli Chen

{"title":"Experimental investigation on the effect of air temperature on the anti-frosting effect of wire mesh based on space radiation","authors":"Lizhen Huang , Mengjie Song , Seyyed Hossein Hosseini , Fan Gao , Zekang Zhen , Ningli Chen","doi":"10.1016/j.applthermaleng.2025.126316","DOIUrl":"10.1016/j.applthermaleng.2025.126316","url":null,"abstract":"<div><div>There is a method of anti-frosting by placing a wire mesh in the direction of incoming flow on a cold surface. This method of anti-frosting has the advantage of low cost and simplicity of steps, but there is a lack of specific quantitative analysis of the wire mesh’s ability to anti-frosting. To analyze the effect of air temperature on the effect of wire mesh anti-frosting, five outdoor air temperatures, −5.4 °C, −4.3 °C, −3.2 °C, −2.2 °C, and −1.8 °C, are used for comparison experiments. The results show that the effect of air temperature on wire mesh anti-frosting is nonlinear in terms of the average frost layer thickness and frost layer growth rate. At 5,400 s, when the air temperature was −1.8 °C, −2.2 °C, −3.2 °C, −4.3 °C, and −5.4 °C, the average frost layer thickness with wire mesh region decreases by 78.48%, 3.88%, 46.35%, 13.66%, and 31.90%. The wire mesh anti-frosting efficiency decreases and then stabilizes as the air temperature decreases. After placing the wire mesh, the frost mass per square meter of the cold plate surface decreases by 78.38%, 53.39%, 29.78%, 37.72%, and 31.28 %. The results help to complement quantitative analyses of the anti-frosting effect of wire mesh and provide insight into the frosting process on surfaces with porous structures.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"271 ","pages":"Article 126316"},"PeriodicalIF":6.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747829","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}

引用次数: 0

Multi-objective optimization on thermal–hydraulic performance of symmetrical hierarchical microchannel heat sinks

IF 6.1 2区工程技术

Applied Thermal Engineering Pub Date : 2025-03-25 DOI: 10.1016/j.applthermaleng.2025.126309

Yuwei Wang , Cong Qi

{"title":"Multi-objective optimization on thermal–hydraulic performance of symmetrical hierarchical microchannel heat sinks","authors":"Yuwei Wang , Cong Qi","doi":"10.1016/j.applthermaleng.2025.126309","DOIUrl":"10.1016/j.applthermaleng.2025.126309","url":null,"abstract":"<div><div>The increasing integration of microelectronic devices will lead to hot spots and reduce service life. The microchannel heat sink can effectively manage thermal loads, and its energy efficiency requires urgent enhancement amidst global energy constraints. This study investigated the effects of the secondary channel width and trapezoidal bottom angle on the thermohydraulic performance through numerical simulation and multi-objective optimization. Results showed that expanding the secondary channel width provides a larger flow space and increases the heat transfer area. The pressure drop is reduced, while maintaining effective cooling. The energy efficiency ratio of the cooling system is improved. Increasing the trapezoidal bottom angle can increase the velocity and takes away the heat quickly. The temperature uniformity is improved to avoid excessive local hot spot. Taking the minimization of pressure drop and thermal resistance as objectives, the Pareto optimal solution is obtained by Non-dominated Sorting Genetic Algorithm II. Using Technique for Order Preference by Similarity to Ideal Solution with entropy weight to get the optimal compromise solution. The secondary channel width is 0.216 mm, and the trapezoidal bottom angle is 56.93°. Compared with the microchannel without fins, the pressure drop is reduced by 15.19 % and the thermal resistance is reduced by 23.79 %. A new method was provided to improve the efficiency of structural optimization and obtain microchannel structures with high temperature uniformity and energy efficiency ratio, which provides a very important reference value for the parameter optimization of microchannels.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"271 ","pages":"Article 126309"},"PeriodicalIF":6.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715688","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}

引用次数: 0

Employing sugar alcohol-based phase change material for integrated compact thermal battery (ICTB): experimental exploration for future configuration of modern space heating with thermal storage

IF 6.1 2区工程技术

Applied Thermal Engineering Pub Date : 2025-03-25 DOI: 10.1016/j.applthermaleng.2025.126317

Reza Abdu Rahman , Dibyo Setiawan , Agung Nugroho , Robertus Dhimas Dhewangga Putra

{"title":"Employing sugar alcohol-based phase change material for integrated compact thermal battery (ICTB): experimental exploration for future configuration of modern space heating with thermal storage","authors":"Reza Abdu Rahman , Dibyo Setiawan , Agung Nugroho , Robertus Dhimas Dhewangga Putra","doi":"10.1016/j.applthermaleng.2025.126317","DOIUrl":"10.1016/j.applthermaleng.2025.126317","url":null,"abstract":"<div><div>Coupling solar space heating (SSH) with thermal energy storage (TES) system is proven to supply clean energy for space heating in building sector. The TES typically employs low-density (< 1 g/cm<sup>3</sup>) phase change material (PCM) to accommodate maximum temperature operation from the collector. This results in a low-density TES unit, which is less feasible for modern building space heating. The study introduces integrated compact thermal battery (ICTB) using higher density PCM (> 1.4 g/cm<sup>3</sup>) comes from sugar alcohol group. Temperature limitation is solved by coupling the ICTB with electric heater. The ICTB has an effective volume-to-weight ratio of 0.735 cm<sup>3</sup>/g, making the model extremely compact as TES tank. The maximum charge temperature is possible to reach 150 °C for sorbitol (SL) and xylitol (XL), while mannitol (ML) achieves higher limit (210 °C). The three PCMs have melting temperature above 90 °C with maximum latent heat of 275.36 J/g. The charge evaluation shows rating charge varies between 38.4–41.1 °C/kWh, which improves about 93.5% by introducing solid stripes. The solid stripe causes suitable temperature distribution inside the ICTB unit without requiring complex system modification. The discharge cycle able to increase the air temperature by 72.6%. This work shows the possibility of achieving higher density TES system for modern space heating using ICTB configuration, providing valuable insight for the advanced development of the system, including the possibility of designing autonomous operations with a high potential for commercialization to support the energy transition in the building sector.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"271 ","pages":"Article 126317"},"PeriodicalIF":6.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715673","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}

引用次数: 0

Performance and energy evaluation of R450A, R1234yf, R513A, R516A, R152A, and R1234ze(E) as alternatives to R134A in an air conditioner

IF 6.1 2区工程技术

Applied Thermal Engineering Pub Date : 2025-03-25 DOI: 10.1016/j.applthermaleng.2025.126319

Zakir Hussain , Nayoung You , Honghyun Cho

{"title":"Performance and energy evaluation of R450A, R1234yf, R513A, R516A, R152A, and R1234ze(E) as alternatives to R134A in an air conditioner","authors":"Zakir Hussain , Nayoung You , Honghyun Cho","doi":"10.1016/j.applthermaleng.2025.126319","DOIUrl":"10.1016/j.applthermaleng.2025.126319","url":null,"abstract":"<div><div>This study investigates six low Global Warming Potential (GWP) refrigerants R450A, R1234yf, R513A, R516A, R152A, and R1234ze(E) as potential drop-in alternatives for R134A in an optimized air conditioning system. The simulations were run at high ambient temperatures and showed highly accurate results with experimental ones. As a result, R1234ze(E) achieved the lowest discharge temperature (10.5% below R134A), while R450A and R513A have slightly lower discharge temperatures relative to R134A. While R152A increased cooling capacity by 7.8%, other alternatives exhibited reduced cooling capacities compared to R134A, with R1234ze(E) and R1234yf showing reductions of 21.8% and 12.3%, respectively. Power consumption is significantly lower for R1234ze(E) (15.4% reduction), while R450A and R516A demonstrated minimal COP reductions of 1.2% and 1.6%. Annual energy consumption analysis shows R152A with the highest energy use (4.9% above R134A) and R1234ze(E) with the lowest (15.4% below R134A). Additionally, Total Equivalent Warming Impact (TEWI) analysis shows reductions in total emissions for R450A (4.5%), R513A (5.4%), and R1234yf (9.2%), while R1234ze(E) shows the highest reduction (18.2%). In conclusion, R152A, R450A, and R516A emerged as promising alternatives due to their comparable performance with R134A..</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"271 ","pages":"Article 126319"},"PeriodicalIF":6.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715151","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}

引用次数: 0

Effects of operating parameters and fluids on the performance of a hydrogen regenerative flow compressor in a proton exchange membrane fuel cell system

IF 6.1 2区工程技术

Applied Thermal Engineering Pub Date : 2025-03-25 DOI: 10.1016/j.applthermaleng.2025.126326

Yuhang Chen , He Lv , Renjie Li , Xiaoming Liu , Lingzi Wang , Jianmei Feng , Xueyuan Peng , Feng Cao

{"title":"Effects of operating parameters and fluids on the performance of a hydrogen regenerative flow compressor in a proton exchange membrane fuel cell system","authors":"Yuhang Chen , He Lv , Renjie Li , Xiaoming Liu , Lingzi Wang , Jianmei Feng , Xueyuan Peng , Feng Cao","doi":"10.1016/j.applthermaleng.2025.126326","DOIUrl":"10.1016/j.applthermaleng.2025.126326","url":null,"abstract":"<div><div>Regenerative flow compressors (RFCs) have garnered significant attention for hydrogen recirculation in proton exchange membrane fuel cell systems due to their simple structure and oil-free operation. The compression performance of RFCs is intimately linked to the operating pressure, temperature, and gas composition. This study delves into the specific effects of these three parameters on the pressurization and power consumption characteristics of hydrogen RFCs. Results indicate that the hydrogen mass flow rate is 1.69 g s<sup>−1</sup>, the parasitic power is 599 W, the adiabatic efficiency is 37.2 %, and the specific work is 23.6 J kg<sup>−1</sup> Pa<sup>−1</sup> under 70 kW operating condition. An augmentation in the inlet pressure by 10 kPa engenders an escalation in the hydrogen mass flow rate by 0.24 g s<sup>−1</sup> and a reduction of specific work by 2.6 J kg<sup>−1</sup> Pa<sup>−1</sup>. A diminution in inlet temperature of 10°C leads to an increase of 0.15 g s<sup>−1</sup> in hydrogen mass flow rate and a decrease of 1.7 J kg<sup>−1</sup> Pa<sup>−1</sup> in specific work. An increase in the proportion of nitrogen and water vapor results in an increase in hydrogen mass flow rate and an improvement in adiabatic efficiency, but with a consequential higher specific work. Additionally, this study demonstrates that RFCs are characterized by a constant dimensionless performance curve, which is independent of environmental parameters. Consequently, predicting the operation of RFC under various operating conditions becomes feasible.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"271 ","pages":"Article 126326"},"PeriodicalIF":6.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747826","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}

引用次数: 0

A novel full-spectrum-driven photocatalytic ventilated wall based on visible photocatalyst: Thermal and air purification performance

IF 6.1 2区工程技术

Applied Thermal Engineering Pub Date : 2025-03-25 DOI: 10.1016/j.applthermaleng.2025.126318

Xuhui Cao , Huifang Liu , Guoji Zhang , Niansi Li , Jie Ji , Bendong Yu

{"title":"A novel full-spectrum-driven photocatalytic ventilated wall based on visible photocatalyst: Thermal and air purification performance","authors":"Xuhui Cao , Huifang Liu , Guoji Zhang , Niansi Li , Jie Ji , Bendong Yu","doi":"10.1016/j.applthermaleng.2025.126318","DOIUrl":"10.1016/j.applthermaleng.2025.126318","url":null,"abstract":"<div><div>The application of photocatalytic (PC) in Trombe wall to create a healthy and comfortable indoor environment has become a widely used technology, but the photocatalytic materials can only be excited by ultraviolet (UV) light, resulting in low solar spectral utilization. Therefore, a novel full-spectrum-driven photocatalytic ventilated wall based on visible (VIS) catalyst C-TiO<sub>2</sub> was proposed, which realized high thermal and purification performance. Firstly, the VIS catalyst (C-TiO<sub>2</sub>) was prepared and characterized. Secondly, the thermodynamic performance of the system under different weather conditions was analyzed. Thirdly, the multi-factor kinetic model and the thermal and mass transfer model of the wall were established and verified. Finally, the thermal performance and purification performance of the wall and the traditional PC wall were compared. The main results were: (1) Due to the doping of C element, the spectral response range of the catalyst had a clear tendency to shift to the VIS. The degradation ratio of formaldehyde was 27.33–50.00 %. (2) The average thermal efficiency and average purification efficiency of the wall were 0.29 and 0.53 in a sunny day, respectively. The average thermal efficiency and average purification efficiency of the wall were 0.26 and 0.48 in a cloudy day, respectively. (3) The average thermal efficiency and clean air delivery rate (CADR) were 1.31 times and 3.86 times that of PC wall, respectively.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"271 ","pages":"Article 126318"},"PeriodicalIF":6.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734602","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}

引用次数: 0

General framework for hermetic scroll expander modelling derived from commercial compressor

IF 6.1 2区工程技术

Applied Thermal Engineering Pub Date : 2025-03-24 DOI: 10.1016/j.applthermaleng.2025.126314

Márcio Santos, Jorge André, Ricardo Mendes, José B. Ribeiro

{"title":"General framework for hermetic scroll expander modelling derived from commercial compressor","authors":"Márcio Santos, Jorge André, Ricardo Mendes, José B. Ribeiro","doi":"10.1016/j.applthermaleng.2025.126314","DOIUrl":"10.1016/j.applthermaleng.2025.126314","url":null,"abstract":"<div><div>The accurate selection and modelling of scroll expanders, inverted from commercial compressors, are critical for optimizing small-scale Organic Rankine Cycle (ORC) systems. In this study, a generalized manufacturer-data-driven framework is proposed for predicting scroll expander performance without requiring prior experimental calibration. The methodology was applied to a Copeland ZR380 scroll compressor converted into an expander, which was experimentally tested in a regenerative ORC system using R1234ze as the working fluid. The model extends a semi-empirical approach originally developed for an open-drive scroll expander operating with HCFC-123, recalculating key parameters based on manufacturer data and thermohydrodynamic property scaling.</div><div>The model was validated against experimental data, showing that it underpredicted the expander outlet temperature by 1.5–2 °C and the mass flow rate by approximately 0.2 kg/s, while overpredicting the electric power output by 0.5–1 kW<sub>e</sub>. These deviations, while present, remain within the accuracy range of similar models that require prior calibration. Expansion losses were analysed using energy cascade analysis, revealing their impact on isentropic work and overall efficiency. Parametric simulations showed that efficiency decreases sharply at low pressure ratios due to over-expansion losses and at high pressure ratios due to under-expansion losses, while shaft power increases with pressure ratio regardless of inlet pressure and rotational speed. By enabling a priori expander selection and performance prediction based solely on manufacturer data, this framework eliminates the need for conventional assumptions of adiabatic operation and fixed isentropic efficiency, offering a practical tool for optimizing expander selection and ORC system design.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"271 ","pages":"Article 126314"},"PeriodicalIF":6.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705142","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}

引用次数: 0

High-resolution internal temperature measurements and X-ray imaging of sodium heat pipes

IF 6.1 2区工程技术

Applied Thermal Engineering Pub Date : 2025-03-24 DOI: 10.1016/j.applthermaleng.2025.126296

Erik M. Tillman, Tiago A. Moreira, Gregory F. Nellis, Mark H. Anderson

{"title":"High-resolution internal temperature measurements and X-ray imaging of sodium heat pipes","authors":"Erik M. Tillman, Tiago A. Moreira, Gregory F. Nellis, Mark H. Anderson","doi":"10.1016/j.applthermaleng.2025.126296","DOIUrl":"10.1016/j.applthermaleng.2025.126296","url":null,"abstract":"<div><div>A heat pipe incorporating internal fiber optic temperature sensors was fabricated and charged with high purity sodium. The heat pipe was tested in start-up and steady-state operation with heat loads up to 1500 W. Internal temperature data was collected to characterize the axial temperature profile of the heat pipe at different experimental conditions. The novel application of time-resolved X-ray imaging at 30 Hz in combination with fiber optic temperature measurements allowed for tracking of the liquid sodium and revealed internal flow phenomena and temperature fluctuations. X-ray imaging of the heat pipe showed that excess liquid accumulated in the condenser during start-up and remained there during steady-state operation. It was found that continuum flow in the vapor regime began at a temperature of 450℃. For steady-state operation at heat loads of less than 1500 W, and inactive region of the condenser was identified, characterized by a sharp decrease in temperature, indicating negligible condensation in this region. The inactive region was found to decrease in length with increasing heat load and to increase in length with increasing heat removal from the condenser. Surface waves were observed on the pool of liquid sodium in the condenser, with magnitude depending on the applied heating load. Pairing time-resolved X-ray images with high-resolution temperature data indicated a relationship between the passing of the surface waves and fluctuations in the local internal temperature, with both seeming to occur at a frequency of 0.4 Hz.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"271 ","pages":"Article 126296"},"PeriodicalIF":6.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747834","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}

引用次数: 0

Numerical analysis of the steady and transient operating characteristics of the flue gas molten salt heat storage system

IF 6.1 2区工程技术

Applied Thermal Engineering Pub Date : 2025-03-24 DOI: 10.1016/j.applthermaleng.2025.126279

Wentao Guo , Chao Liu , Jinliang Xu , Zhengyu Chen , Xiongjiang Yu , Xinyu Dong , Hongliang Su

{"title":"Numerical analysis of the steady and transient operating characteristics of the flue gas molten salt heat storage system","authors":"Wentao Guo , Chao Liu , Jinliang Xu , Zhengyu Chen , Xiongjiang Yu , Xinyu Dong , Hongliang Su","doi":"10.1016/j.applthermaleng.2025.126279","DOIUrl":"10.1016/j.applthermaleng.2025.126279","url":null,"abstract":"<div><div>The flue gas molten salt heat storage system enhances coal-fired power plant flexibility by recovering thermal energy using molten salt as the medium. This study investigates the system’s steady and transient characteristics using a novel transient model that incorporates temperatures of the heat exchange tubes and shell, while accounting for operating mode switching and deviations from design conditions. Key findings reveal that under steady-state operation, the heat exchange tubes bundle stabilizes at 324.20 °C, with molten salt and flue gas outlet temperatures reaching 390.05 °C and 299.99 °C, respectively. Preheating times for startup are optimized to 8 min (thermal storage, 40%–50% flue gas flow) and 17 min (thermal preservation, 75%–100% flue gas flow). During shutdown, cooling to 200 °C requires 70.6 h (thermal storage) and 97.5 h (thermal preservation), with full cooling to ambient taking around 1 month. Transient analyses demonstrate rapid system responses: a 60 °C increase in flue gas inlet temperature triggers the molten salt outlet alarm threshold (395 °C) within 25 s. To mitigate temperature deviations, coupling adjustments prove effective: reducing flue gas temperature by 60 °C restores molten salt outlet temperature to 390 °C in 603 s, while increasing molten salt mass flow by 34% achieves this in 412 s. These results provide critical operational benchmarks, emphasizing the need for real-time parameter monitoring and adaptive control to ensure system safety and efficiency. The findings offer actionable insights for optimizing design and operational strategies in flue gas molten salt heat storage systems.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"271 ","pages":"Article 126279"},"PeriodicalIF":6.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704952","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}

引用次数: 0

Performance assessment of Brine-based Liquid-Desiccant System for greenhouse air conditioning

IF 6.1 2区工程技术

Applied Thermal Engineering Pub Date : 2025-03-24 DOI: 10.1016/j.applthermaleng.2025.126310

Meriem Soussi , Ghada Chouk , M. Thameur Chaibi , Martin Buchholz , Reiner Buchholz

{"title":"Performance assessment of Brine-based Liquid-Desiccant System for greenhouse air conditioning","authors":"Meriem Soussi , Ghada Chouk , M. Thameur Chaibi , Martin Buchholz , Reiner Buchholz","doi":"10.1016/j.applthermaleng.2025.126310","DOIUrl":"10.1016/j.applthermaleng.2025.126310","url":null,"abstract":"<div><div>This paper investigates the application of a Brine-based Liquid Desiccant Air-conditioning System (LDAS) for use in greenhouses in Tunisia, aiming to address the energy-intensive nature of conventional climate control methods. Seawater brines from Tunisian Salinas are chosen as cost-effective and environmentally sustainable desiccants, despite challenges associated with brine complexity.</div><div>The primary goal of the research is to evaluate the LDAS performance in creating and maintaining a balanced and controlled climate for optimal plant growth while minimizing energy consumption. The experimental setup involves a closed greenhouse, and the study comprehensively assesses the system performance through measurements and calculations of the Equilibrium Relative Humidity (ERH) of the liquid desiccant, heat exchange rates of the LDAS components, and the overall Coefficient of Performance (COP). The methodology integrates both experimental and numerical approaches, utilizing Python programming for thermodynamic parameter analysis. Initial results indicate the promising potential of brine-based LDAS as a sustainable solution for greenhouse agriculture in Tunisia. Hygroscopicity assessments reveal a significant dehumidification capacity of the system, with an ERH range of 33 % to 39.1 %. Greenhouse trials demonstrate the system effectiveness in temperature modulation, humidity control, and the maintenance of an optimal Vapor Pressure Deficit (VPD) conducive to plant growth. The LDAS demonstrates substantial cooling effects in the greenhouse, reducing air temperatures by 5.5 to 23.8 °C with efficient humidity control, thereby achieving a noteworthy COP of 5.81, which exceeds benchmarks set by conventional systems. Despite these achievements, the paper acknowledges nuanced challenges and emphasizes the need for further optimization for consistent climate control in demanding scenarios.</div></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":"271 ","pages":"Article 126310"},"PeriodicalIF":6.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747106","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}

引用次数: 0