International Communications in Heat and Mass Transfer最新文献_第9页

Research on the binary droplet collision of coalescence, separation and breakup processes of water in oil emulsions based on fluid dynamics

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-25 DOI: 10.1016/j.icheatmasstransfer.2025.108891

Zexin Liu, Chuanke Liang, Nanjun Ma, Sichen Wei, Tao Li , Qijie Sun

{"title":"Research on the binary droplet collision of coalescence, separation and breakup processes of water in oil emulsions based on fluid dynamics","authors":"Zexin Liu, Chuanke Liang, Nanjun Ma, Sichen Wei, Tao Li , Qijie Sun","doi":"10.1016/j.icheatmasstransfer.2025.108891","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108891","url":null,"abstract":"<div><div>This study investigates the complex physical phenomenon of binary droplet collisions, focusing on the effect of the Weber number (<em>We</em>) on collision outcomes. A series of binary droplet collision models were established for varying <em>We</em>, and the critical <em>We</em> ranges for droplet coalescence, separation, and breakup were determined. The results indicate that the critical <em>We</em> for coalescence and separation is around 248, while the critical <em>We</em> for separation and breakup is approximately 1200. Specifically, when <em>We</em>≤247, the colliding droplets coalesce; for 249 ≤ <em>We</em>≤1199, separation occurs; and for <em>We</em>≥1201, the droplets break up after collision. Expressions for the critical Weber numbers for coalescence–separation (We<sub>1</sub>) and separation–breakup (We<sub>2</sub>) were derived. Additionally, nomograms were developed to illustrate the effects of Reynolds (<em>Re</em>) and Ohnesorge (Oh) numbers on collision outcomes. As Oh and Re increase, the coalescence region narrows, while the breakup region expands. Furthermore, with increasing Oh, the critical <em>Re</em> position gradually decreases, with a progressively smoother rate of decrease.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108891"},"PeriodicalIF":6.4,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680932","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

Study of ionic water/graphene nanofluids in solar panels under the effects of thermal radiation and slip conditions using experimental data

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-24 DOI: 10.1016/j.icheatmasstransfer.2025.108845

Abdulhakeem Yusuf , M.M. Bhatti , R. Ellahi

{"title":"Study of ionic water/graphene nanofluids in solar panels under the effects of thermal radiation and slip conditions using experimental data","authors":"Abdulhakeem Yusuf , M.M. Bhatti , R. Ellahi","doi":"10.1016/j.icheatmasstransfer.2025.108845","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108845","url":null,"abstract":"<div><div>The combination of the extensive surface area and thermal conductivity of graphene oxide (GO) with the thermal stability and low volatility of ionic liquid (IL) enhances thermal energy efficiency in solar collectors. This study theoretically examined the flow characteristics of various nanofluids in a solar collector, specifically ionic liquid/GO, a mixture of 75% ionic liquid and 25% water (H<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O)/GO, a 50% ionic liquid and 50% water/GO blend, and water/GO. To accurately assess the effects of buoyancy, solar radiation, nanoparticle absorption, and the overall thermal energy transfer from the boundary to the collector, this study incorporates nonlinear free convection, nonlinear thermal radiation, heat absorption, and slip and jump phenomena under convective conditions. The mathematical model was developed using non-similarity variables, and the results were obtained using the Garlakin weighted residual method (GWRM). This study demonstrates that an increase in the nonlinear free convective parameter, nonlinear thermal radiation, and heat absorption enhances the thermal energy of the nanofluid within the collector. The pure ionic liquid combined with graphene oxide (IL/GO) nanofluid demonstrated a thermal energy efficiency that exceeded that of water by 36.8%, which quantitatively corroborated the experimental result of 37.4%. This indicates that increased IL/GO nanofluid concentrations are optimal for high-intensity solar applications, whereas water is preferable for moderate solar conditions to prevent overheating.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108845"},"PeriodicalIF":6.4,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of geometric asymmetry on thermal performance in non-coaxial L-shape oscillating heat pipe

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-24 DOI: 10.1016/j.icheatmasstransfer.2025.108821

Cezary Czajkowski , Hongbin Ma , Sławomir Pietrowicz

{"title":"Effect of geometric asymmetry on thermal performance in non-coaxial L-shape oscillating heat pipe","authors":"Cezary Czajkowski , Hongbin Ma , Sławomir Pietrowicz","doi":"10.1016/j.icheatmasstransfer.2025.108821","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108821","url":null,"abstract":"<div><div>The paper investigates the performance of a novel oscillating heat pipe with a unique L-shaped geometry, where the evaporator is oriented at a 90° angle to the condenser. The experiment explores the influence of gravitational acceleration by adjusting the inclination angle of the system across a full range from 0° to 180°, using acetone as the working fluid. The capillary tube has an inner diameter of 1.5mm, allowing the formation of liquid plugs and vapor bubbles. Three filling ratios were evaluated: 50%, 70%, and 80%, with a maximum applied heat flux of 43kWm<sup>−2</sup>. Under optimal conditions, the thermal resistance was found to be 0.48KW<sup>−1</sup>. The findings indicate that the geometric design and orientation relative to the gravitational field of Earth have a significant impact on the thermal performance of the oscillating heat pipe. Although the device has relatively few bends, it achieved efficient horizontal heat transfer under certain conditions. In particular, these results, particularly for high filling ratios, have not been reported in previous studies. In addition, the research improves the analysis of oscillating heat pipes, with thermal resistance trends providing valuable insights into start-up behavior, overheating risk, and different operating modes.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108821"},"PeriodicalIF":6.4,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681319","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

The relationship between these temporal characteristics of micro-explosive breakup of water/fuel composite droplets and the ambient gas temperature

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-24 DOI: 10.1016/j.icheatmasstransfer.2025.108896

D.V. Antonov, R.M. Fedorenko, O.V. Vysokomornaya, L.S. Yanovsky, P.A. Strizhak

{"title":"The relationship between these temporal characteristics of micro-explosive breakup of water/fuel composite droplets and the ambient gas temperature","authors":"D.V. Antonov, R.M. Fedorenko, O.V. Vysokomornaya, L.S. Yanovsky, P.A. Strizhak","doi":"10.1016/j.icheatmasstransfer.2025.108896","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108896","url":null,"abstract":"<div><div>The processes of micro-explosive breakup of water/fuel composite droplets have been actively studied recently and are used in various technological applications. However, the challenge of finding the most efficient combinations of input parameters to result in the shortest breakup delay, lowest energy consumption, and largest number of child droplets, while also allowing for generalization of experimental findings, remains unresolved. It is essential to understand how these characteristics depend on input parameters. To do this, it is important to determine the kinetic characteristics of droplet heating before micro-explosion and relate them to the properties of the liquids and heating conditions. This paper presents the micro-explosion delay times for two-liquid droplets based on experimental findings. It also presents the relationship between these temporal characteristics and the ambient gas temperature, as well as the thermal energy supplied to the droplets through various heating arrangements. The experiments were conducted using droplets consisting of water and three different types of fuel: kerosene, Diesel fuel, and rapeseed oil. The mathematical analysis of the experimental data revealed the exponential nature of the delay time of the micro-explosion with respect to temperature and heat flux. The pre-exponential factor and activation energy in the Arrhenius equation were determined after considering the influence of various factors, such as temperature, heat exchange conditions, and physical and chemical properties of the liquids and the surrounding gas. These findings confirm that micro-explosions in gas-vapor-droplet systems can occur without the risk of spontaneous ignition.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108896"},"PeriodicalIF":6.4,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681317","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

Visualization and experimental investigation of two-phase flow in S-shaped microchannel heat sink

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-23 DOI: 10.1016/j.icheatmasstransfer.2025.108883

Yu Zhang , Lin Miao , Liang Chen , Yu Hou

{"title":"Visualization and experimental investigation of two-phase flow in S-shaped microchannel heat sink","authors":"Yu Zhang , Lin Miao , Liang Chen , Yu Hou","doi":"10.1016/j.icheatmasstransfer.2025.108883","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108883","url":null,"abstract":"<div><div>An experimental visualization was used to explore the flow pattern and bubble behavior in S-shaped microchannel heat sink. The micro-channel and micro-fin width is 0.5 mm and 0.35 mm, respectively, and the micro-fin height is 0.29 mm. The heat flux over 180 W/cm<sup>2</sup> can be dissipated by a relatively low inlet flow rate of 15 mL/min using HFE7100 as the coolant. PDMS was used as the visual test assembly and the bubble behavior was observed by a high-speed camera. Results show that the two-phase flow patterns in the heat sink are as follows: bubbly flow, slug flow, churn flow, annular flow and local irregular bubbles by extrusion. Small bubbles re-perform the bubble behavior in the S-shaped microchannel: bubble formation - bubble growth- bubble deformation - bubble assemblage - bubble breakage - bubble growth. The main reasons for the instability of the two-phase flow are the flow mal-distribution, the flow pattern transition, the bubble behavior and periodic local drying. Moreover, the heat transfer performance was investigated and results show that the S-shaped microchannel heat sink with 3 inlets and 4 outlets has the maximum effective heat transfer coefficient of 1.1 × 10<sup>5</sup> W/m<sup>2</sup>⋅K and two-phase heat transfer coefficient of 9.9 × 10<sup>5</sup> W/m<sup>2</sup>⋅K when the heat flux is 61.91 W/cm<sup>2</sup> with a pressure drop of 18.3 kPa.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108883"},"PeriodicalIF":6.4,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681314","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

Spread dynamics and heat transfer mechanism of tunnel spill fire under longitudinal ventilation

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-23 DOI: 10.1016/j.icheatmasstransfer.2025.108882

Jia Song, Jie Chen, Haining Wang, Haihang Li, Di Meng

{"title":"Spread dynamics and heat transfer mechanism of tunnel spill fire under longitudinal ventilation","authors":"Jia Song, Jie Chen, Haining Wang, Haihang Li, Di Meng","doi":"10.1016/j.icheatmasstransfer.2025.108882","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108882","url":null,"abstract":"<div><div>This study systematically investigated the effects of longitudinal ventilation on tunnel spill fires within a velocity range of 0 to 2.0 m/s, using scaled model tunnel experiments at a ratio of 1:8. The research described the dynamic spreading process of spill fire in detail, revealed the stress mechanism of the fuel layer, and highlighted that heat feedback was the critical factor controlling the spread area of the spill fire, despite an increase in ventilation velocity enhancing wind force. The spread process of tunnel spill fires was divided into initial spread, shrinking, quasi-steady burning, and extinction stages. The research also uncovered the coexistence of natural and forced convection within tunnels, highlighting the substantial impact of natural convection on forced convection. On the upwind side, low wind velocities increased the combustion rate, whereas high velocities had the opposite effect. Conversely, on the downwind side, the interplay between natural and forced convection led to an initial decrease in combustion rate at low wind velocities, followed by an increase as wind velocity increased. This study overcame the constraints of traditional unidirectional spread experiments and established a new method for the study of simultaneous bidirectional spread of spill fires in tunnel environments. These findings yielded novel insights into the behavioral characteristics of tunnel spill fire behavior under longitudinal ventilation.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108882"},"PeriodicalIF":6.4,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681316","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

New method for evaluating the influence of the cooling gallery shape on the heat load of piston

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-23 DOI: 10.1016/j.icheatmasstransfer.2025.108887

Peiyou Xiong , Zhenqian Mu , Mengmeng Li , Lijun Deng , Yanpeng Chen , Xinqi Qiao , Lei Shi

{"title":"New method for evaluating the influence of the cooling gallery shape on the heat load of piston","authors":"Peiyou Xiong , Zhenqian Mu , Mengmeng Li , Lijun Deng , Yanpeng Chen , Xinqi Qiao , Lei Shi","doi":"10.1016/j.icheatmasstransfer.2025.108887","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108887","url":null,"abstract":"<div><div>One of the most effective methods for reducing the thermal load on pistons is the utilization of cooling galleries. Although extensive research on the heat transfer properties of new cooling gallery structures piston head failures continue to occur frequently in highly reinforced diesel engines. Using the cooling gallery of a specific diesel engine model as a baseline, its shape is altered by manipulating the hydraulic diameter. The transient fluid flow in the cooling gallery is analyzed using Fluent simulation software, while the temperature field of the piston is assessed using ANSYS. Additionally, visual experiments were performed on the piston's basic shape using a dedicated experimental platform, with temperatures at critical locations on the piston head measured via a temp-plug experiment. The effectiveness of the simulation results is demonstrated through a comparison with experimental data. Simulation results for various cooling gallery shapes are compared based on fluid flow characteristics, viscous boundary layer thickness, and Weber number. This study proposes a method for rapidly assessing the heat transfer effectiveness of the cooling gallery using hydraulic diameter and heat transfer coefficient as criteria. Results indicate that fluid flow in the wave-shaped cooling gallery is relatively stable, and fluid erosion on the walls is consistent, resulting in optimal heat transfer effectiveness.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108887"},"PeriodicalIF":6.4,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681315","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

An entropy-based random-walk model for predicting in-plane thermal conductivity of porous media

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-23 DOI: 10.1016/j.icheatmasstransfer.2025.108862

Alireza Khademiyan , Behzad Baghapour , Mahmoud Momtazpour , Goodarz Ahmadi

{"title":"An entropy-based random-walk model for predicting in-plane thermal conductivity of porous media","authors":"Alireza Khademiyan , Behzad Baghapour , Mahmoud Momtazpour , Goodarz Ahmadi","doi":"10.1016/j.icheatmasstransfer.2025.108862","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108862","url":null,"abstract":"<div><div>In this study, we propose a random-walk model to estimate the in-plane thermal conductivity of porous media within a two-component, two-dimensional domain. An entropy-weighted procedure guides random walkers to explore a heterogeneous domain composed of distinct thermal properties by using independently injected thermal particles. This entropy-based random-walk (ERW) model was validated against several synthetic domains using numerical simulations and theoretical models. Our results demonstrate that the proposed model aligns with the Shannon–H theorem, exhibiting maximal entropy properties. The ERW model showed acceptable precision compared with the theoretical and numerical models. In some geometries, the model closely matched the numerical simulations, whereas in others, it aligned with the theoretical predictions. Connection between the ERW model and weighted harmonic mean model is discussed. Furthermore, the accuracy of the ERW model was tested using real applications with scanning electron microscopy (SEM) images and experimental measurements. A comparison between the ERW model and classical finite-volume method highlights the advantages of the proposed approach in heterogeneous domains with high conductance ratios, where finite-volume model convergence is hindered. To enhance the simulations, a multithreaded parallelized version of the ERW simulations was developed for the CPU platform, which is particularly effective for large numbers of particles.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108862"},"PeriodicalIF":6.4,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681313","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

Convective heat transfer enhancement through additively built multiscale micro-tetrahedron features

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-22 DOI: 10.1016/j.icheatmasstransfer.2025.108888

Vanshika Singh , Fred List III , Chase Joslin , Paul Brackmann , S.S. Babu , M.M. Kirka

{"title":"Convective heat transfer enhancement through additively built multiscale micro-tetrahedron features","authors":"Vanshika Singh , Fred List III , Chase Joslin , Paul Brackmann , S.S. Babu , M.M. Kirka","doi":"10.1016/j.icheatmasstransfer.2025.108888","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108888","url":null,"abstract":"<div><div>Use of Additive Manufacturing (AM) to improve the heat transfer characteristics of tip shrouds in high-pressure turbines is being considered by industries. Existing designs of these components integrate micro-cooling channels to reduce the bulk temperature for improved life. In this research, closely packed micro tetrahedron features in addition to AM roughness has been considered. This multiscale surface characteristics increased surface area per unit volume available for heat exchange. Micro-tet features were designed, manufactured, characterized, and evaluated systematically while increasing their height. An enormous increase in the overall wetted surface area by 200 % was measured. The convective heat transfer enhancement was ∼3.72 times EDM rough coupon, and friction factor enhancement was ∼5.5 times EDM rough coupon. Furthermore, the proposed design offers 2.5 times enhanced heat transfer for a given 2 W pumping power compared to our EDM rough coupon. Heat transfer enhancement was observed to not vary strongly with increased Reynolds number. Such complex designs are only possible through additive manufacturing for increased heat transfer with little pressure penalty. Finally, increasing the micro-tet height for increased surface area and improved heat exchange beyond an upper limit might not be a significant benefit as it gets compensated by increasing skin friction.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108888"},"PeriodicalIF":6.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681312","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 4E-based optimization framework for circular biomass multi-generation systems integrating NSGA-II and ANN to enhance resource efficiency and sustainability

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-22 DOI: 10.1016/j.icheatmasstransfer.2025.108849

Alireza Daneh-Dezfuli, Mohamad Ghanad-Dezfuli, Maziar Changizian

{"title":"A novel 4E-based optimization framework for circular biomass multi-generation systems integrating NSGA-II and ANN to enhance resource efficiency and sustainability","authors":"Alireza Daneh-Dezfuli, Mohamad Ghanad-Dezfuli, Maziar Changizian","doi":"10.1016/j.icheatmasstransfer.2025.108849","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108849","url":null,"abstract":"<div><div>This study explores an innovative multi-generation energy system designed to improve resource efficiency and promote environmental sustainability. The proposed system relies on biomass as its primary energy source and integrates five main components: a gasification unit, a Brayton cycle, a Rankine steam cycle, an absorption chiller, and a multi-effect desalination unit with thermal vapor compression. Unlike conventional systems, this approach enables the simultaneous production of electricity, heating, cooling, and freshwater from a single renewable source, maximizing energy utilization while reducing carbon dioxide emissions. A comprehensive assessment was conducted from thermodynamic, economic, and environmental perspectives. The study identifies gasification and combustion as the major sources of exergy destruction, impacting overall system performance. To improve efficiency, a heat recovery unit was introduced, leading to a 37 % reduction in carbon dioxide emissions. The system was optimized using a multi-objective genetic algorithm, considering exergy efficiency, energy cost rate, and carbon emissions as key criteria. Under optimal conditions, the system achieved an exergy efficiency of 31.96 %, with compressor pressure ratio and combustion chamber temperature identified as the most critical factors influencing cost. In terms of energy production, the system generated 5830 kW of electricity, with 71 % derived from biomass and 29 % from the heat recovery unit. These findings highlight the potential of biomass-based multi-generation systems as a sustainable solution for addressing rising energy demands while reducing environmental impact.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108849"},"PeriodicalIF":6.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681311","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