The Experts below are selected from a list of 134388 Experts worldwide ranked by ideXlab platform

Xilin Shi - One of the best experts on this subject based on the ideXlab platform.

  • Mathematic modelling of the debrining for a salt cavern gas storage
    Journal of Natural Gas Science and Engineering, 2018
    Co-Authors: Tongtao Wang, Chunhe Yang, Wang Huimeng, Shuanglong Ding, Xilin Shi
    Abstract:

    Abstract Debrining is one of the key steps to complete the construction of a salt cavern gas storage, which determines whether the cavern can transfer to underground gas storage (UGS) and the effective volume of a salt cavern UGS. A mathematical model is proposed based on the change characteristic of the dynamic depth of the interface between gas and brine and the pressure equilibrium principle to predict the parameters of the debrining. The calculating equations of debrining parameters, such as, total debrining time, gas injection pressure, gas injection volume per day, and cumulative gas injection volume, are deduced. A calculating program is developed based on the deduced equations by using Visual Basic computer language. To verify the proposed mathematical model, MZ-1 cavern of Jintan salt district, Jiangsu province, China, is simulated as an example. Based on the calculating results, the debrining parameters of MZ-1 cavern are optimized. These parameters were used in the debrining of MZ-1 cavern. By comparing the analytical results with Field Monitoring Data, the proposed mathematical model is shown to have a high accuracy. The error between the predicting results and the Field Monitoring Data is less than 5%, which can satisfy the requirement of actual debrining prediction. Research results can provide the parameter optimization and prediction for the debrining of salt caverns used for gas storage in Jintan salt district and some other places with similar conditions.

Vincenzo Maria Gentile - One of the best experts on this subject based on the ideXlab platform.

  • Monitoring Results and Energy Performances Evaluation of Freescoo Solar DEC Systems
    Energy Procedia, 2016
    Co-Authors: Pietro Finocchiaro, Marco Beccali, Valerio Lo Brano, Vincenzo Maria Gentile
    Abstract:

    Abstract This work addresses the energy saving performances of some solar Desiccant and Evaporative Cooling (DEC) systems working with the freescoo technology. The innovative freescoo concept is based on the use two fixed and cooled adsorption beds and advanced indirect evaporative cooling processes. The main feature of this new adsorption bed concept is to allow the simultaneous dehumidification and cooling of air. The systems analyzed have been installed in Italy last here and results based on Field Monitoring Data are here presented. A description of the monitored systems and comparisons between the energy performances based on the main performance indicators such as EER, thermal COP, cooling power, off grid operation Data are shown. Systems are provided with solar PVT collectors which produce the necessary heat for the regeneration of the desiccant and fulfil most of the need of electricity.

Bo Chen - One of the best experts on this subject based on the ideXlab platform.

  • Calculation Methods for the Permeability Coefficient of Concrete Face Rockfill Dam with Cracks
    Advances in Civil Engineering, 2019
    Co-Authors: Shi Zhongwen, Bo Chen, Hailong Zhang, Wenzhong Yin
    Abstract:

    The permeability coefficient of a concrete slab rockfill dam (CFRD) was calculated in this paper on the basis of the equivalent quasi-continuum model for the percolation of crack-intensive face. This calculation helped simplify the establishment of a finite element model and improve the efficiency of calculating the seepage of dams. Moreover, an inversion algorithm based on particle swarm optimization and support vector machine was proposed and applied. Comparison of the permeability coefficients produced from the two methods showed minimal difference. On this basis, the seepage Field of the dam was analyzed. The analysis and Field Monitoring Data reveal that the proposed algorithm is of high application value, which lays a foundation for future studies on the seepage properties of CFRD with cracks.

  • Field Monitoring and numerical analysis of tsing ma suspension bridge temperature behavior
    Structural Control & Health Monitoring, 2013
    Co-Authors: Yong Xia, Bo Chen, Xiaoqing Zhou
    Abstract:

    SUMMARY It is important to take into account the effect of temperature in assessing the structural condition of bridges. However, very few quantitative studies have examined the temperature behavior of large-scale bridges because of their large size and complicated configuration. This paper, for the first time, investigates the temperature distribution and associated responses of a long-span suspension bridge—the 2132-m-long Tsing Ma Bridge—through a combination of numerical analysis and Field Monitoring. With appropriate assumptions, fine finite element models of a deck plate, section frame, and bridge tower are constructed to facilitate thermal analysis. With ambient temperature measurements and a solar radiation model, the time-dependent temperature distribution within each of these components is calculated through transient heat transfer analysis. The numerical results are verified by comparing them with Field Monitoring Data on temperature distribution and variation at different times and in different seasons. The temperature Data are then input into the structural model of the whole bridge to obtain the displacement and strain responses of various bridge components, with a good level of agreement being achieved between the bridge responses and the Monitoring Data. This exercise verifies both the accuracy of the analytical method employed and the effectiveness of the Monitoring system installed on the bridge. The study shows that integrating numerical analysis with Field Monitoring Data provides for a thorough understanding of the temperature behavior of long-span bridges. Copyright © 2012 John Wiley & Sons, Ltd.

Tongtao Wang - One of the best experts on this subject based on the ideXlab platform.

  • Mathematic modelling of the debrining for a salt cavern gas storage
    Journal of Natural Gas Science and Engineering, 2018
    Co-Authors: Tongtao Wang, Chunhe Yang, Wang Huimeng, Shuanglong Ding, Xilin Shi
    Abstract:

    Abstract Debrining is one of the key steps to complete the construction of a salt cavern gas storage, which determines whether the cavern can transfer to underground gas storage (UGS) and the effective volume of a salt cavern UGS. A mathematical model is proposed based on the change characteristic of the dynamic depth of the interface between gas and brine and the pressure equilibrium principle to predict the parameters of the debrining. The calculating equations of debrining parameters, such as, total debrining time, gas injection pressure, gas injection volume per day, and cumulative gas injection volume, are deduced. A calculating program is developed based on the deduced equations by using Visual Basic computer language. To verify the proposed mathematical model, MZ-1 cavern of Jintan salt district, Jiangsu province, China, is simulated as an example. Based on the calculating results, the debrining parameters of MZ-1 cavern are optimized. These parameters were used in the debrining of MZ-1 cavern. By comparing the analytical results with Field Monitoring Data, the proposed mathematical model is shown to have a high accuracy. The error between the predicting results and the Field Monitoring Data is less than 5%, which can satisfy the requirement of actual debrining prediction. Research results can provide the parameter optimization and prediction for the debrining of salt caverns used for gas storage in Jintan salt district and some other places with similar conditions.

Xiaoqing Zhou - One of the best experts on this subject based on the ideXlab platform.

  • Field Monitoring and numerical analysis of tsing ma suspension bridge temperature behavior
    Structural Control & Health Monitoring, 2013
    Co-Authors: Yong Xia, Bo Chen, Xiaoqing Zhou
    Abstract:

    SUMMARY It is important to take into account the effect of temperature in assessing the structural condition of bridges. However, very few quantitative studies have examined the temperature behavior of large-scale bridges because of their large size and complicated configuration. This paper, for the first time, investigates the temperature distribution and associated responses of a long-span suspension bridge—the 2132-m-long Tsing Ma Bridge—through a combination of numerical analysis and Field Monitoring. With appropriate assumptions, fine finite element models of a deck plate, section frame, and bridge tower are constructed to facilitate thermal analysis. With ambient temperature measurements and a solar radiation model, the time-dependent temperature distribution within each of these components is calculated through transient heat transfer analysis. The numerical results are verified by comparing them with Field Monitoring Data on temperature distribution and variation at different times and in different seasons. The temperature Data are then input into the structural model of the whole bridge to obtain the displacement and strain responses of various bridge components, with a good level of agreement being achieved between the bridge responses and the Monitoring Data. This exercise verifies both the accuracy of the analytical method employed and the effectiveness of the Monitoring system installed on the bridge. The study shows that integrating numerical analysis with Field Monitoring Data provides for a thorough understanding of the temperature behavior of long-span bridges. Copyright © 2012 John Wiley & Sons, Ltd.