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学者姓名：谢静超
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摘要 ：
The high-salt fog environment under a marine climate affects the capillary water absorption performance of porous building materials, causing changes in the thermal and wet properties of the materials and in their structural durability. Therefore, a capillary water absorption experiment of coral sand concrete (CSC) in different salt solution concentrations was designed in this study. The experimental results showed that salt had the effect of first promoting and then inhibiting capillary water absorption coefficient (Acap) with increased salt solution concentration. Salt had the effect of promoting liquid diffusivity (Dl). In addition, by analyzing the surface tension and viscosity of a sodium chloride solution, the mechanism of the influence of liquid properties on Acap was briefly explored. The results provide a theoretical basis for the establishment of a coupled heat and moisture transfer model of porous building materials in marine climates.
关键词 ：
Coral sand concrete (CSC) Coral sand concrete (CSC) Liquid diffusivity Liquid diffusivity Salt solution diffusivity Salt solution diffusivity Salt solution Salt solution Capillary water absorption coefficient Capillary water absorption coefficient
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| GB/T 7714 | Zheng, Zhimiao , Xie, Jingchao , Xu, Xin et al. Experimental Study on Capillary Water Absorption Performance of Coral Sand Concrete in High-Salt Environment [J]. | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2024 , 36 (7) . |
| MLA | Zheng, Zhimiao et al. "Experimental Study on Capillary Water Absorption Performance of Coral Sand Concrete in High-Salt Environment" . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING 36 . 7 (2024) . |
| APA | Zheng, Zhimiao , Xie, Jingchao , Xu, Xin , Xie, Yue , Liu, Jiaping . Experimental Study on Capillary Water Absorption Performance of Coral Sand Concrete in High-Salt Environment . | JOURNAL OF MATERIALS IN CIVIL ENGINEERING , 2024 , 36 (7) . |
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摘要 ：
Incorporating phase change materials (PCM) into multi-glazed windows (MW) has been recognized as an effective way to regulate the indoor thermal environment and reduce the energy consumption of buildings. However, the design and calculation of PCM-filled multi-glazed windows (MW + PCM) remain challenging due to the lack of general transient simulation methods and integrated tools. To address this issue, the present study developed a dynamic coupled thermal and optical model for MW + PCM based on the enthalpy-temperature and interface energy balance methods. Then, the model was implemented in C++ and integrated into the TRNSYS software as a new module (Type 2602). In parallel, a test platform comprising two test chambers was established to evaluate the effect of PCM on the thermal and optical properties of the window and to validate the newly proposed module. It was found that compared to the traditional triple-glazed window (TW), the PCM-filled triple-glazed window (TW + PCM) effectively reduces the irradiance through the window by 34.17 % and the maximum temperature of the inner surface by approximately 5.56 degrees C. While the increase in external surface radiation flux density from 600 to 1200 W/m2 has a diminishing effect on the heat flux variation rate during the heat dissipation process for TW + PCM, it effectively shortens the latent heat absorption time by 0.50 h and increases the temperature difference between the inner and outer surfaces by 3.02 degrees C. The new module demonstrates satisfactory accuracy through experimental validation and simulation comparisons, with the maximum heat flux coefficient of variance of the root mean square error (CV(RMSE)) less than 6.35 % and 11.25 % under TW and TW + PCM configurations.
关键词 ：
Multi-glazed windows Multi-glazed windows Thermal performance Thermal performance Latent heat storage Latent heat storage Phase change material Phase change material Optical performance Optical performance
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| GB/T 7714 | Xu, Xin , Xie, Jingchao , Zhang, Xiaojing et al. A new validated TRNSYS module for phase change material-filled multi-glazed windows [J]. | APPLIED THERMAL ENGINEERING , 2024 , 258 . |
| MLA | Xu, Xin et al. "A new validated TRNSYS module for phase change material-filled multi-glazed windows" . | APPLIED THERMAL ENGINEERING 258 (2024) . |
| APA | Xu, Xin , Xie, Jingchao , Zhang, Xiaojing , Chen, Guang , Liu, Jiaping . A new validated TRNSYS module for phase change material-filled multi-glazed windows . | APPLIED THERMAL ENGINEERING , 2024 , 258 . |
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摘要 ：
Coastal buildings are exposed to salt spray environments for prolonged periods of time, and salt accumulates in the building walls. The effect of salt on the water absorption characteristics of the material is unclear and requires further investigation of the coupled heat and moisture transfer processes in coastal building walls. To address this issue and quantify this effect, cement mortar specimens were pretreated, and a capillary water absorption experiment was conducted on a saltcontaining cement mortar to obtain the laws of the water absorption coefficient and capillary saturation moisture content with salt content. In addition, equations for fitting the water absorption coefficient and capillary saturation moisture content of salt-containing materials were established by integrating the salt impact factors proposed in this study. The obtained results showed that as the salt content increased, the water absorption coefficient first increased and then decreased, with a peak increase of 7.5% compared to that of the control group. The capillary saturation moisture content gradually decreased with increasing salt content, decreasing by 15.8% at the maximum salt content. Combined with scanning electron microscopy (SEM) observations of microstructural changes in specimens containing different amounts of salt, it was inferred that the dominant factors affecting the water absorption characteristics would be different when the salt content of the material was varied. In addition, the optimal formulae for the water absorption coefficient and capillary saturation moisture content of salt-containing materials were obtained.
关键词 ：
Building materials Building materials Cement mortar Cement mortar Capillary water absorption experiment Capillary water absorption experiment Salt -containing material Salt -containing material Hygroscopic property Hygroscopic property
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| GB/T 7714 | Xie, Yue , Xie, Jingchao , Bai, Lu et al. Experimental study on the effect of salt on the water absorption characteristic of cement mortar [J]. | JOURNAL OF BUILDING ENGINEERING , 2023 , 73 . |
| MLA | Xie, Yue et al. "Experimental study on the effect of salt on the water absorption characteristic of cement mortar" . | JOURNAL OF BUILDING ENGINEERING 73 (2023) . |
| APA | Xie, Yue , Xie, Jingchao , Bai, Lu , Liu, Jiaping . Experimental study on the effect of salt on the water absorption characteristic of cement mortar . | JOURNAL OF BUILDING ENGINEERING , 2023 , 73 . |
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摘要 ：
To address the absence of balance in existing heat and mass transfer structures and enhance their adaptability in high-temperature and humid environments, a new internally cooled dehumidifier has been developed. This innovative dehumidifier incorporates corrugated fins to increase disturbance and contact area, along with a multichannel flat tube to improve cooling efficiency and compatibility. Experimental research was conducted to investigate mass transfer characteristics under different air, solution, and cooling water conditions in a high-temperature and humidy climate, and the Sh number correlation was derived. The findings indicated that compared to previous designs, the new dehumidifier's performance is less influenced by air temperature due to the corrugated fins' disturbance and cooling efficiency of the multi-channel flat tube. Additionally, its dehumidification capacity is positively correlated with air humidity, making it well-suited for high-temperature, high-humidity regions; The presence of corrugated fins enhances the disturbance on the solution surface, leading to a non-linear improvement in dehumidification performance when increasing solution flow; Lowering solution and water temperatures is more effective in improving dehumidification performance than increasing the flow rate, resulting in maximum increases of 60 % and 18.3 %, respectively, in mass transfer coefficients. Therefore, temperature adjustments are recommended for operational optimization; The Sh number correlation demonstrates high accuracy, within +/- 25 %, ensuring reliability. This study provides technical support and a foundational dataset for the dehumidifier's application in buildings located in high-temperature and high-humidity areas.
关键词 ：
Heat and mass transfer Heat and mass transfer Internally cooled dehumidification Internally cooled dehumidification Sh number correlation Sh number correlation Solution dehumidification Solution dehumidification Multichannel flat tube Multichannel flat tube
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| GB/T 7714 | Du, Boyao , Zhang, Guangkai , Xie, Jingchao et al. Experimental analysis of an innovative internally cooled dehumidifier [J]. | JOURNAL OF BUILDING ENGINEERING , 2023 , 80 . |
| MLA | Du, Boyao et al. "Experimental analysis of an innovative internally cooled dehumidifier" . | JOURNAL OF BUILDING ENGINEERING 80 (2023) . |
| APA | Du, Boyao , Zhang, Guangkai , Xie, Jingchao , Liu, Honggang , Liu, Jiaping . Experimental analysis of an innovative internally cooled dehumidifier . | JOURNAL OF BUILDING ENGINEERING , 2023 , 80 . |
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摘要 ：
Indoor air movement is beneficial for building energy conservation and human thermal comfort. Chamber experiments were conducted to evaluate the cooling effect of elevated air speeds on thermal comfort. Three temperature (26, 29, and 32 degrees C) and two relative humidity (40%-60% and 70%-90%) levels were selected for a total of six experimental conditions. Thirty-six subjects in summer clothes (0.5 clo) were exposed to mechanical airflow produced by electric fans and experienced four 30-min exposures at various air speeds (0.01-2.0 m/s), and subjective perceptions and skin temperature were collected. Results showed that mean skin temperatures decreased by 0.2 degrees C-0.6 degrees C for every 1 m/s increase in air speed. Airflow may alleviate thermal dissatisfaction, but air speeds up to 2.0 m/s cannot eliminate dis-comfort in extremely hot-humid environments (29 degrees C/85%, 32 degrees C/55%, and 32 degrees C/85%). In the experimen-tal conditions of 26 degrees C/45%, 26 degrees C/75%, 29 degrees C/55%, 32 degrees C/55%, and 32 degrees C/85%, the upper air speed limits were 1.2, 1.2, 1.6, 2.0, and 2.0 m/s, respectively. Based on experimental data, comfort zones with elevated air speed for both moderate (40%-60%) and high humidity (70%-90%) were obtained. The maximum acceptable operative temperatures in two humidity conditions were 31.3 and 28.6 degrees C, extending the ASHRAE 55 values by 1.3 and 0.1 degrees C, respectively.(c) 2023 Elsevier B.V. All rights reserved.
关键词 ：
Thermal comfort zone Thermal comfort zone Climatic chamber experiment Climatic chamber experiment Hot-humid climate Hot-humid climate Air movement Air movement Mean skin temperature Mean skin temperature Mechanical airflow Mechanical airflow
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| GB/T 7714 | Zhou, Jinyue , Zhang, Xiaojing , Xie, Jingchao et al. Effects of elevated air speed on thermal comfort in hot-humid climate and the extended summer comfort zone [J]. | ENERGY AND BUILDINGS , 2023 , 287 . |
| MLA | Zhou, Jinyue et al. "Effects of elevated air speed on thermal comfort in hot-humid climate and the extended summer comfort zone" . | ENERGY AND BUILDINGS 287 (2023) . |
| APA | Zhou, Jinyue , Zhang, Xiaojing , Xie, Jingchao , Liu, Jiaping . Effects of elevated air speed on thermal comfort in hot-humid climate and the extended summer comfort zone . | ENERGY AND BUILDINGS , 2023 , 287 . |
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摘要 ：
This study provides a reference for estimating the building envelope thermal performance at the initial stage of design for nearly zero-energy buildings in different climate zones. A simplified model of heat load prediction, which combines the quasi-steady-state thermal balance calculation procedure in ISO 52016 and the variable-base degree-days method, was proposed. Therefore, a building energy performance evaluation tool BPT V1.0 was developed. Subsequently, the simplified model was validated through comparative analysis with the Building Energy Simulation Test (BESTEST) standard procedure. To conduct a feasibility analysis of the development tool, case studies were performed on the performance evaluation of building envelopes of residential and office buildings in different climate zones in China. Compared to the simulation results from EnergyPlus, the deviation of heat load calculated by BPT V1.0 was within 10%, which further verifies the applicability of the tool under different climatic conditions. Annual heat load under different thermal performance building envelopes was calculated through BPT V1.0. The building energy efficiency improvement rates were found to range from 30 to 60% in nearly zero-energy buildings in different climate zones in China. The study results can provide a reference for energy managers and a basis for estimating the building energy efficiency performance with different envelope thermal properties in the region.
关键词 ：
quasi-steady-state method quasi-steady-state method balance point temperature balance point temperature variable-base degree-day variable-base degree-day BESTEST BESTEST heat load prediction heat load prediction
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| GB/T 7714 | Hao, Ziyang , Xie, Jingchao , Zhang, Xiaojing et al. Simplified Model of Heat Load Prediction and Its Application in Estimation of Building Envelope Thermal Performance [J]. | BUILDINGS , 2023 , 13 (4) . |
| MLA | Hao, Ziyang et al. "Simplified Model of Heat Load Prediction and Its Application in Estimation of Building Envelope Thermal Performance" . | BUILDINGS 13 . 4 (2023) . |
| APA | Hao, Ziyang , Xie, Jingchao , Zhang, Xiaojing , Liu, Jiaping . Simplified Model of Heat Load Prediction and Its Application in Estimation of Building Envelope Thermal Performance . | BUILDINGS , 2023 , 13 (4) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The commonly used diffuse fraction models are generally expressed as a single-value function of clearness index (Kt). Whereas in fact, the same Kt occurring at different times of the day may correspond to different diffuse fraction (Kf). Using a 10-year dataset from 2005 to 2014, this study intended to model hourly solar diffuse fraction based on sky conditions. Five cities in China, including Golmud, Kashgar, Sanya, Wuhan, and Wenjiang, were selected as representatives of five solar climatic zones. The measured radiation data on a horizontal surface were used for k-means clustering of the sky conditions with two factors of Kf and Kt. The results show that the sky conditions could be divided into two groups according to time dimension: the morning (6:00-12:00) and the afternoon (13:00-18:00) segments. Subsequently, a morning-afternoon segmented Kf-Kt model for each zone was constructed based on quartic polynomial regression, with the smallest error rate at a range of 10.4%-28.5%. Comparison with the existing models further validates that the respective models for the morning and afternoon periods can assist in improving the modeling of the hourly solar diffuse fraction on a horizontal surface in variable solar climatic zones.
关键词 ：
Solar radiation Solar radiation Clearness index Clearness index Polynomial regression Polynomial regression Diffuse fraction Diffuse fraction K-means K-means
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| GB/T 7714 | Yin, Kaili , Zhang, Xiaojing , Xie, Jingchao et al. Modeling hourly solar diffuse fraction on a horizontal surface based on sky conditions clustering [J]. | ENERGY , 2023 , 272 . |
| MLA | Yin, Kaili et al. "Modeling hourly solar diffuse fraction on a horizontal surface based on sky conditions clustering" . | ENERGY 272 (2023) . |
| APA | Yin, Kaili , Zhang, Xiaojing , Xie, Jingchao , Hao, Ziyang , Xiao, Guofeng , Liu, Jiaping . Modeling hourly solar diffuse fraction on a horizontal surface based on sky conditions clustering . | ENERGY , 2023 , 272 . |
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摘要 ：
Improving the energy performance of windows is crucial for enhancing the overall energy conservation of buildings. To select the optimal energy-efficient windows across diverse climate conditions, this study collected 3,597 windows from China, then classified their component characteristics and thermophysical properties. According to the survey, the dominant window type in China is casement window with aluminum (ALU) frame material, which accounts for 71.17% of the sample; in terms of glass layers, the most prevalent are double-layer (DG) (58.72%) and triple-layer (TG) (40.67%); for surface coating, the majority is the single-layer coating (SCO) (65.22%), followed by non-coating (NCO) (29.89%). Afterwards, respective linear regressions between thermophysical parameters (heat transfer coefficient (U-value), solar heat gain coefficient (g-value), and air leakage (AL)) and component factors were performed. Furthermore, an energy index (EI) model of windows was developed to evaluate component factors. Five distinct climate zones of China and four orientations were investigated to explore the primary window components influencing energy performance. In terms of the southfacing window, the dominant factor for severe cold (SC) and temperate (T) zones is uniformly the glass layer, while for hot summer and warm winter zone (HSWW) zone, it is the Low-E coating layer. Additionally, in the cold (C) and hot summer and cold winter (HSCW) zones, the other cardinal directions highlight different primary components. This study recommends the optimal selection of window component factors in different orientations and climates.
关键词 ：
Component factors Component factors Thermophysical parameters Thermophysical parameters Climatic zones Climatic zones Residential building Residential building Window energy performance Window energy performance
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| GB/T 7714 | Xu, Xin , Xie, Jingchao , Zhang, Xiaojing et al. Optimal selection of window components in China based on energy performance modeling [J]. | ENERGY AND BUILDINGS , 2023 , 297 . |
| MLA | Xu, Xin et al. "Optimal selection of window components in China based on energy performance modeling" . | ENERGY AND BUILDINGS 297 (2023) . |
| APA | Xu, Xin , Xie, Jingchao , Zhang, Xiaojing , Gao, Shengdi , Cao, Yulong , Liu, Jiaping . Optimal selection of window components in China based on energy performance modeling . | ENERGY AND BUILDINGS , 2023 , 297 . |
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摘要 ：
The recirculation of dehumidification and regeneration solutions has shown promising moisture removal rates and energy-saving effects in liquid desiccant dehumidification systems. The different combinations of dehumidification solution recirculation ratio and regeneration solution recirculation ratio under varying operating conditions can have different impacts on the system. Nevertheless, the system performance under full operating conditions has not been comprehensively studied. To address this research gap, this study proposes a liquid desiccant dehumidification system with a solution recirculation structure, defines a new evaluation index - matching rate, and conducts a parameterized study and optimization of the steady-state performance of the liquid desiccant dehumidification system with a solution recirculation structure within the range of solution recirculation ratios under all operating conditions, by integrating the system cooling capacity and energy effectiveness ratio. The performance of the system is studied by varying seven key parameters: dehumidification solution recirculation ratio, regeneration solution recirculation ratio, total solution mass flow rate, dehumidification solution inlet temperature, regeneration solution inlet temperature, and ambient air temperaturehumidity ratio. The results show that under design conditions, the solution recirculation ratio within the full operating range can process air to a range of 17.8 degrees C-18.5 degrees C and 12.5 g/kg-17.4 g/kg. The maximum system cooling capacity, energy effectiveness ratio and matching rate values are 21.5 kW, 0.21 and 0.42 respectively. The recommended (dehumidification solution recirculation ratio, regeneration solution recirculation ratio) schemes for high, medium and low demand of system cooling capacity are (0.7-0.9, 0-0.5), (0.4-0.6, 0-0.7) and (0-0.3, 0.4-0.7) respectively, based on the requirements of system cooling capacity.
关键词 ：
Air conditioning Air conditioning Matching Matching Solution recirculation ratio Solution recirculation ratio Dehumidification Dehumidification Liquid desiccant Liquid desiccant
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| GB/T 7714 | Zhang, Guangkai , Xie, Jingchao , Ji, Ying et al. Study on the optimal solution recirculation ratio of liquid desiccant dehumidification system based on matching rate evaluation [J]. | APPLIED THERMAL ENGINEERING , 2023 , 236 . |
| MLA | Zhang, Guangkai et al. "Study on the optimal solution recirculation ratio of liquid desiccant dehumidification system based on matching rate evaluation" . | APPLIED THERMAL ENGINEERING 236 (2023) . |
| APA | Zhang, Guangkai , Xie, Jingchao , Ji, Ying , Du, Boyao , Liu, Honggang , Liu, Jiaping . Study on the optimal solution recirculation ratio of liquid desiccant dehumidification system based on matching rate evaluation . | APPLIED THERMAL ENGINEERING , 2023 , 236 . |
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摘要 ：
Liquid desiccant dehumidification systems have demonstrated good energy savings and dehu-midification effects in extremely hot and humid areas. However, to improve system performance, the matching problem between the desiccant-regeneration solution recirculation ratio and system performance has not been thoroughly investigated. Therefore, in this study, we constructed a liquid desiccant dehumidification system with solution recirculation and set four circulation modes: NS mode without solution recirculation, CS mode with only desiccant solution recircu-lation, RS mode with only regeneration solution recirculation, and CRS mode with both desiccant and regeneration solution recirculation. The orthogonal test method was used to determine the influence of solution recirculation on the evaluation indicators, and multi-objective optimization of the major parameters under the four circulation modes was performed based on the NSGA-II and TOPSIS algorithms. The results showed a clear conflict between the moisture removal rate (MRR) and energy consumption (Q). In extremely hot and humid areas, a high air flow rate is suitable for use in the regenerator to process small-flow-rate solutions or set larger sizes. Under typical environmental conditions, it is recommended to set up a liquid desiccant dehumidification system with a solution recirculation structure: when MRR demand is high, the CS mode should be used, where MRR is 6.72 g/s; when Q demand is high, the RS mode should be used where Q is 35.34 kW; considering both MRR and Q effects, the CRS mode should be used where unit energy consumption moisture removal rate is 0.1196 g/(s.kW).
关键词 ：
Multi -objective optimization Multi -objective optimization Performance evaluation Performance evaluation Solution recirculation Solution recirculation Liquid desiccant Liquid desiccant Dehumidification Dehumidification
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| GB/T 7714 | Zhang, Guangkai , Xie, Jingchao , Du, Boyao et al. Study on the optimal circulation structure of liquid desiccant dehumidification system based on composite model [J]. | JOURNAL OF BUILDING ENGINEERING , 2023 , 75 . |
| MLA | Zhang, Guangkai et al. "Study on the optimal circulation structure of liquid desiccant dehumidification system based on composite model" . | JOURNAL OF BUILDING ENGINEERING 75 (2023) . |
| APA | Zhang, Guangkai , Xie, Jingchao , Du, Boyao , Liu, Honggang , Wang, Jianping , Liu, Jiaping . Study on the optimal circulation structure of liquid desiccant dehumidification system based on composite model . | JOURNAL OF BUILDING ENGINEERING , 2023 , 75 . |
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