International Communications in Heat and Mass Transfer最新文献_第7页

Effect of inclination angles on heat transfer characteristics of solid and perforated spiral finned heat exchangers

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-01 DOI: 10.1016/j.icheatmasstransfer.2025.108920

Fan He , Chenxi Hu , Weijun Gao , Shanshan Li , Xi Meng

{"title":"Effect of inclination angles on heat transfer characteristics of solid and perforated spiral finned heat exchangers","authors":"Fan He , Chenxi Hu , Weijun Gao , Shanshan Li , Xi Meng","doi":"10.1016/j.icheatmasstransfer.2025.108920","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108920","url":null,"abstract":"<div><div>Cylinder models integrated with solid/perforated spiral fins are a major direction for heat transfer enhancement in shell-and-tube latent heat exchangers. In practical engineering applications of this system, there exists an operational requirement for different orientations. To investigate how the orientation affects the melting/solidification performance, this paper conducts contrastive experiments for solid and perforated spiral fin heat exchangers (SSHX and PSHX) at five inclination angles (0°, 45°, 90°, 135°, 180°). Solid-liquid evolution and temperature history of the thermal charge/discharge process were recorded, heat transfer characteristics were compared, and energy storage efficiencies were analyzed. The results show that the inclination angle can significantly influence the phase change process of SSHX and PSHX, with the highest values of the indices for PSHX and SSHX at 0°, and the lowest values at 135° and 90°orientation. After the optimization of the inclination angle, the average heat transfer rate and heat flux can be increased by 15.5 % ∼ 84.4 % in thermal charge and 6.3 % ∼ 22.1 % in thermal discharge. Perforations enhance internal convective flows within the heat exchangers across all inclination angles, especially for the vertical orientation with a significant melting rate increase, but such heat transfer contributions are diminished as the angle towards the horizontal orientation. Top-side injection of heat transfer fluid yields better thermal performance than bottom-side injection. The highest energy storage efficiencies for PSHX and SSHX reach 63.4 % and 62.9 %, respectively. These results can provide valuable guidance for practical engineering applications.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108920"},"PeriodicalIF":6.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748717","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 investigation of thermal energy storage characteristics of dual phase change material in double elliptic pipe

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-01 DOI: 10.1016/j.icheatmasstransfer.2025.108921

Nessrine Sayoud , Ahmet Yüksel , Abdelghani Laouer , Mohamed Teggar , Müslüm Arıcı , Noureddine Brihi

{"title":"Numerical investigation of thermal energy storage characteristics of dual phase change material in double elliptic pipe","authors":"Nessrine Sayoud , Ahmet Yüksel , Abdelghani Laouer , Mohamed Teggar , Müslüm Arıcı , Noureddine Brihi","doi":"10.1016/j.icheatmasstransfer.2025.108921","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108921","url":null,"abstract":"<div><div>Latent heat storage offers high thermal energy density. However, the low storage rate is a challenge to address. This study aims to evaluate the effects of cascading dual-phase change material (dual-PCM) within a double elliptic pipe on thermal performance and storage rates. The melting process of dual-PCM in the enclosure is numerically analyzed. The numerical model is validated by comparison with experimental data of the literature. Nine design configurations are examined, focusing on the orientation (vertical and horizontal) and the inclination of the elliptic enclosure in order to find out the most effective storage unit. The thermal and flow fields are analyzed alongside the evolution of the melt fraction, charging times, and stored energy. Results indicate that the cascading dual-PCM inside an outer horizontal elliptic enclosure with an inner vertical heating elliptic pipe reduce thermal energy storage time by up to 49 %, demonstrating the most efficient melting process. Furthermore, the study indicates that vertical elliptical pipes reduce thermal energy storage time by 24.7 % compared to horizontal ones, and that lower inclination angles provided a faster and more uniform melting process. Dual-PCM configurations in horizontal orientations significantly enhance energy storage efficiency.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108921"},"PeriodicalIF":6.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738778","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

Development of a new onset of nucleate boiling model for helical tubes

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-01 DOI: 10.1016/j.icheatmasstransfer.2025.108885

Maolong Liu , Ziyi Xu , Cong Shen , Hanyang Gu

{"title":"Development of a new onset of nucleate boiling model for helical tubes","authors":"Maolong Liu , Ziyi Xu , Cong Shen , Hanyang Gu","doi":"10.1016/j.icheatmasstransfer.2025.108885","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108885","url":null,"abstract":"<div><div>The flow inside a helical tube is influenced by the combined effects of centrifugal force and gravitational buoyancy, resulting in uneven circumferential heat transfer characteristics. This circumferential non-uniformity leads to a significant difference in the onset of nucleate boiling (ONB) compared to straight tubes. Currently, there are few studies on the ONB in helical tubes. This lack of high-precision prediction models significantly restricts the accuracy of heat transfer predictions for the helical tubes. The present study investigated the effects of circumferential non-uniform heat transfer characteristics on the ONB. It was found that the relative circumferential wall temperature in a helical tube during single-phase flow follows a trigonometric function distribution for the circumferential angle. A new empirical correlation was proposed to predict the circumferential wall temperature distribution in helical tubes in single-phase flow. Based on the new wall temperature distribution correlation, a new theoretical model for the ONB in helical tubes was proposed. The prediction error of the new ONB model is within ±10 %, which is superior to existing models.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108885"},"PeriodicalIF":6.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748722","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

Molecular dynamics of boiling heat transfer under passive liquid driven mechanism based on capillary flow in rough nanochannels

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-01 DOI: 10.1016/j.icheatmasstransfer.2025.108912

Shengnan Meng , Han Gong , Xiaoxin Zeng , Longyu Yang , Bingcheng Wang , Zheng Cui , Xiaoteng Ma

{"title":"Molecular dynamics of boiling heat transfer under passive liquid driven mechanism based on capillary flow in rough nanochannels","authors":"Shengnan Meng , Han Gong , Xiaoxin Zeng , Longyu Yang , Bingcheng Wang , Zheng Cui , Xiaoteng Ma","doi":"10.1016/j.icheatmasstransfer.2025.108912","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108912","url":null,"abstract":"<div><div>The boiling under capillary flow greatly affects the heat transfer performance of the passive two-phase heat dissipation devices. In this study, sinusoidal structures with various amplitudes (3.615 Å, 7.23 Å and 10.845 Å) and periods (<span><math><mfrac><mn>1</mn><mn>5</mn></mfrac><mo>×</mo><mn>624</mn><mspace></mspace><mi>Å</mi></math></span>, <span><math><mfrac><mn>2</mn><mn>15</mn></mfrac><mo>×</mo><mn>624</mn><mspace></mspace><mi>Å</mi></math></span> and <span><math><mfrac><mn>1</mn><mn>10</mn></mfrac><mo>×</mo><mn>624</mn><mspace></mspace><mi>Å</mi></math></span>) are constructed to characterize rough microchannels. The capillary flow and boiling under capillary flow in various nanochannels are investigated separately by molecular dynamics simulations. The results show that adding rough elements to wall surface reduces the maximum velocity of the liquid at least 22.9 % compared to the smooth surface. The rough elements can effectively enhance the local heat transfer efficiency and trigger the flow boiling. At the same time, the expansion of the bubble leads to the blockage and prevents the liquid supply, leading to deterioration of heat transfer. Increasing the roughness by increasing the amplitude of the sinusoidal structure will increase the heat transfer coefficient but decrease the total heat absorption. A better approach is to increase roughness by decreasing the period of sinusoidal structure, which has a favorable effect on both heat transfer coefficient and total heat absorption. The rough surface leads to an increase in the concentration of liquid atoms near the wall, enhancing the effectiveness of heat transfer.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108912"},"PeriodicalIF":6.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738777","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 coupled heat-moisture transfer model for the design of cooling textiles

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-01 DOI: 10.1016/j.icheatmasstransfer.2025.108935

Bin Gu , Mengfan Duan , Zhihao Ma , Ruifeng Lu , Haodan Pan , Shuangjiang Feng , Dongliang Zhao

{"title":"A coupled heat-moisture transfer model for the design of cooling textiles","authors":"Bin Gu , Mengfan Duan , Zhihao Ma , Ruifeng Lu , Haodan Pan , Shuangjiang Feng , Dongliang Zhao","doi":"10.1016/j.icheatmasstransfer.2025.108935","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108935","url":null,"abstract":"<div><div>Given the frequent occurrence of extreme heat in recent years, it is crucial to prevent hyperthermia and ensure the safety of individuals at outdoors. However, comprehensive and effective evaluation methods for clothed human body remain insufficient, particularly regarding the critical need to understand the heat and moisture transfer of cooling textiles. This study aims to enhance cooling performance by investigating the effects of different textile thermal properties, such as solar reflectivity, thermal emissivity, and thermal conductivity. First, a coupled heat-moisture transfer model between the human body, textile, and the environment is established, enabling an accurate assessment of heat loss under high-temperature conditions. Furthermore, heat losses for individuals under stationary, walking, and running conditions are evaluated. The results show that the model successfully replicates experimental findings. Under high temperature conditions, solar reflectivity of textiles plays a significant role in regulating heat transfer, while the thermal emissivity and thermal conductivity have less impact on thermal performance. This study provides a theoretical foundation and practical guidance for the development of cooling textiles, which would be beneficial for assessing human thermal management in high-temperature environments.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108935"},"PeriodicalIF":6.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748721","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

Correlations of condensation heat transfer in hydrophobic enhanced tubes with using R32

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-30 DOI: 10.1016/j.icheatmasstransfer.2025.108886

Wei Li , Le Zhang , Tianwen Li , Jianghui Zhang , Yuan Dong , Lian-yun Wei , Jianfu Zhao , Zhixiao Zhang , David J. Kukulka

{"title":"Correlations of condensation heat transfer in hydrophobic enhanced tubes with using R32","authors":"Wei Li , Le Zhang , Tianwen Li , Jianghui Zhang , Yuan Dong , Lian-yun Wei , Jianfu Zhao , Zhixiao Zhang , David J. Kukulka","doi":"10.1016/j.icheatmasstransfer.2025.108886","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108886","url":null,"abstract":"<div><div>An experimental study of condensation heat transfer is performed in enhanced surface stainless steel tubes using refrigerant R32. An evaluation of the effect of hydrophobicity on condensation heat transfer is accomplished by comparing the performance of three enhanced tubes (hydrophobic (HYD), herringbone (HB), and hydrophobic/herringbone composite (HYD/HB)) to one smooth tube. Parameters include: saturation temperatures of 35 °C and 45 °C; mass flow rates of 100 kg/(m<sup>2</sup>·s) and 150 kg/(m<sup>2</sup>·s); and vapor qualities in the range from 0.2 to 0.9. A new condensation flow heat transfer correlation is established based on hydrophobicity and flow pattern analysis. The results indicate: (i) for varying mass flow rates, the HB tube exhibits superior heat transfer performance compared to the HYD and HYD/HB tube; (ii) as vapor quality increases, the HTC of the HYD tube gradually increases and becomes equal to that of the HB tube; (iii) for a vapor quality above 0.6, the HYD tube outperforms the HB tube. Five condensation flow HTC models are evaluated; experimental values were compared and analyzed with the calculated results in order to investigate the condensation flow heat transfer mechanism of enhanced tubes. Condensation flow heat transfer correlations in HYD, HB, and HYD/HB can predict data points within ±20 % including 80 % of the data points, and within ±25 % including 93 % of the data points.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108886"},"PeriodicalIF":6.4,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734632","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

Pool boiling experimental study on the impact of deposition on the nucleate boiling and bubble behavior of horizontally-placed tubes

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-30 DOI: 10.1016/j.icheatmasstransfer.2025.108890

Xiaowen Wang , Maolong Liu , Junsen Fu , Xu Yan , Hongkang Tian , Tenlong Cong , Yao Xiao , Hanyang Gu

{"title":"Pool boiling experimental study on the impact of deposition on the nucleate boiling and bubble behavior of horizontally-placed tubes","authors":"Xiaowen Wang , Maolong Liu , Junsen Fu , Xu Yan , Hongkang Tian , Tenlong Cong , Yao Xiao , Hanyang Gu","doi":"10.1016/j.icheatmasstransfer.2025.108890","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108890","url":null,"abstract":"<div><div>During the operation of the nuclear reactor, the corrosion particles deposited on the fuel cladding will change surface characteristics and affect the boiling heat transfer. However, due to the intricate structure of the deposition layer, the mechanism of the impact of deposition on nucleate boiling is not clear at present. A pool boiling experiment was carried out to investigate the effect of particle deposition on the bubble behavior and nucleate boiling heat transfer characteristics. The effect of deposition time and heat fluxes on the nucleate boiling was investigated. The effect mechanism of particle deposition on the circumferential heat transfer was revealed. The results indicate that the tube surface becomes more hydrophilic after deposition, and the deposited tube presents a boiling heat transfer state with the down-side surface in the form of large bubbles and the up-side surface in the form of a continuous stream of small bubbles. Furthermore, during the deposition process, the heat transfer coefficient decreases rapidly at the initial period, then increases slightly and stabilizes. Meanwhile, the rod circumferential temperature distribution varied before and after deposition, and the deterioration of the heat transfer coefficient of the up-side surface is more serious due to the influence of gravity deposition. The current tests show that corrosion particle deposition has a great impact on heat transfer, the post-deposition heat transfer coefficient can be reduced to 25% of its original value.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108890"},"PeriodicalIF":6.4,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738775","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

Simulation and experiment of boiling two-phase flow and heat transfer in mini-channels with reticulated pore structure

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-30 DOI: 10.1016/j.icheatmasstransfer.2025.108899

Sen Huang, Guoyuan Zhang, Yunlong Li, Xun Luo, Ruyi Yuan

{"title":"Simulation and experiment of boiling two-phase flow and heat transfer in mini-channels with reticulated pore structure","authors":"Sen Huang, Guoyuan Zhang, Yunlong Li, Xun Luo, Ruyi Yuan","doi":"10.1016/j.icheatmasstransfer.2025.108899","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108899","url":null,"abstract":"<div><div>In order to satisfy the operational requirements of electronic devices with small volumes, high heat flow densities, and uniform temperatures, a reticulated pore mini-channel heat sink unit (porosity>72 %) is designed. The mechanism of efficient heat transfer by boiling phase change is studied with deionized water as the cooling medium. A two-phase flow model based on VOF theory is developed, and an experimental platform for testing the boiling two-phase flow and its heat transfer performance in millimeter-scale pore channels is built. The single-phase convective thermal performance and boiling two-phase flow status and heat transfer properties of the heat sink are obtained. The findings indicate that as flow velocity increases, the maximum increase of Nusselt number in two-phase flow can reach 77.2 % in contrast to that in single-phase flow, and maximum reduction in temperature difference across the heated surface can reach 20.1 %. The Nusselt number for the reticulated pore structure is 56.2 % higher than that of a straight mini-channel heat sink, and the heated surface experiences a maximum temperature drop of 3.42 K. Multiple sets of experimental and theoretical results under two-phase flow in pore mini-channels show good consistency. The maximum relative difference in error of the heated surface temperature is only 3.1 %, and the average relative difference in error of the total thermal resistance is 6.68 %. The research will offer significant theoretical and practical contributions to the design of high-efficiency heat sinks with pore mini-channel structure by the boiling phase transition mechanism.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108899"},"PeriodicalIF":6.4,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734633","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

Why people shape roofs the same way

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-28 DOI: 10.1016/j.icheatmasstransfer.2025.108909

A. Bejan , P. Mardanpour

{"title":"Why people shape roofs the same way","authors":"A. Bejan , P. Mardanpour","doi":"10.1016/j.icheatmasstransfer.2025.108909","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108909","url":null,"abstract":"<div><div>The roofs of houses look similar in profile, especially in villages and old settlements. Why? The question is about the common angle of inclination. The answer comes from heat transfer by natural convection. Inspired by the evolution of the <em>sapiens</em> toward more power from the adoption of artifacts, we show that the existence of common roof shapes can be reasoned from the needs of those who live under the roof. Is there a shape that, while reducing the heat loss to the ambient, reduces the human effort (gathering firewood, etc.)? We consider two classes of roof shapes, Λ and cone, and two roof sizes, small and large (respectively, two flow regimes, laminar and turbulent). In laminar natural convection, the common profile of the Λ and the cone looks shallow, with height/base ratios comparable with 1/4. In turbulent flow, the Λ and the cone look like an equilateral triangle. These findings reinforce the evolutionary record of human civilization toward economy of effort and longer life. They also present an opportunity for the future ‘energy design’ of buildings: the external shape has a significant effect on the heat loss from the building.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108909"},"PeriodicalIF":6.4,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714794","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

Heat transfer of energy pipe piles with spiral heat exchanger

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-03-28 DOI: 10.1016/j.icheatmasstransfer.2025.108913

Chenglong Wang , Yachen Guo , Hanlong Liu , Abdelmalek Bouazza , Gangqiang Kong , Xuanming Ding

{"title":"Heat transfer of energy pipe piles with spiral heat exchanger","authors":"Chenglong Wang , Yachen Guo , Hanlong Liu , Abdelmalek Bouazza , Gangqiang Kong , Xuanming Ding","doi":"10.1016/j.icheatmasstransfer.2025.108913","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108913","url":null,"abstract":"<div><div>This paper presents a study on heat transfer for energy pipe piles with a spiral heat exchanger (i.e., spiral-tube energy pipe pile). Physical model testing and a heat transfer analytical model were used to analyze the thermal performance of spiral-tube energy pipe piles filled with different backfill materials. The analytical model was developed using the law of energy conservation and Laplace transforms, and its reliability was validated against both experimental data and numerical simulation results. Furthermore, the model was utilized to conduct full-scale pile simulations and analyze the factors influencing heat transfer. Compared to the classical models for heat transfer, the proposed model was found to be more suitable. This study shows that the choice of backfill materials influences the heat exchange efficiency of spiral-tube energy pipe piles due to variations in their thermal properties. Furthermore, lowering the pile's thermal conductivity increases the amount of heat transferred into the surrounding soil. Additionally, variations in the soil's thermal properties significantly affect the heat transfer in energy pipe piles.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108913"},"PeriodicalIF":6.4,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714793","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