The Experts below are selected from a list of 369669 Experts worldwide ranked by ideXlab platform

Han Jiayi - One of the best experts on this subject based on the ideXlab platform.

  • progressive recognition method for damaged cable load and linear displacement through mixed monitoring
    2014
    Co-Authors: Han Yulin, Ye Lei, Han Jiayi
    Abstract:

    The invention relates to a progressive recognition method for damaged cable load and linear displacement through mixed monitoring. According to the method, based on mixed monitoring, whether a mechanical calculation reference model of a cable structure needs to be updated or not is determined by monitoring cable structure Temperature and Environment Temperature, a new mechanical calculation reference model, with the cable structure Temperature and the Environment Temperature included, of the cable structure is obtained, and a unit damage monitored parameter numerical value varying matrix is obtained through calculation based on the model. According to the approximate linear relation existing among current numerical value vectors of monitored parameters, current initial numerical value vectors of the monitored parameters, the unit damage monitored parameter numerical value varying matrix and the current nominal damage vector of an evaluation object to be solved, a noninferior solution of the current nominal damage vector of the evaluation object is calculated, and accordingly generalized displacement of a supporting base, a damaged cable and the load variable quantity can be recognized when the Temperature changes.

  • damaged cable load generalized displacement recognition method through mixed monitoring
    2014
    Co-Authors: Han Yulin, Han Jiayi
    Abstract:

    The invention relates to a damaged cable load generalized displacement recognition method through mixed monitoring. According to the method, based on mixed monitoring, whether a mechanical calculation reference model of a cable structure needs to be updated or not is determined by monitoring cable structure Temperature and Environment Temperature, a new mechanical calculation reference model, with the cable structure Temperature and the Environment Temperature included, of the cable structure is obtained, and a unit damage monitored parameter numerical value varying matrix is obtained through calculation based on the model. According to the approximate linear relation existing among current numerical value vectors of monitored parameters, current initial numerical value vectors of the monitored parameters, the unit damage monitored parameter numerical value varying matrix and the current nominal damage vector of an evaluation object to be solved, a noninferior solution of the current nominal damage vector of the evaluation object is calculated, and accordingly generalized displacement of a supporting base, a damaged cable and the load variable quantity can be recognized when the Temperature changes.

  • progressive recognition method for problem cable load linear displacement based on mixing monitoring
    2014
    Co-Authors: Han Yulin, Ye Lei, Han Jiayi
    Abstract:

    The invention discloses a progressive recognition method for problem cable load linear displacement based on mixing monitoring. Whether a mechanical calculation reference model of a cable structure needs to be updated or not is determined through monitoring cable structure Temperature and Environment Temperature, so that a mechanical calculation reference model, taking the structure Temperature and the Environment Temperature into account, of the cable structure is obtained, and based on the model, a unit damage monitored parameter value change matrix is obtained through calculation. Based on approximate linear relations existing among current value vectors of monitored parameters, current initial value vectors of the monitored parameters, the unit damage monitored parameter value change matrix and current nominal damage vectors of evaluated objects to be solved, non-inferior solutions of the current nominal damage vectors of the evaluated objects are calculated, and therefore when the Temperature changes, the support linear displacement, a load change quantity and a problem cable can be recognized.

  • recognition method for problem cable load linear displacement based on mixing monitoring
    2014
    Co-Authors: Han Yulin, Ye Lei, Han Jiayi
    Abstract:

    The invention discloses a recognition method for problem cable load linear displacement based on mixing monitoring. According to the method, whether a mechanical calculation reference model of a cable structure needs to be updated or not is determined through monitoring cable structure Temperature and Environment Temperature, so that a mechanical calculation reference model, taking the structure Temperature and Environment Temperature into account, of the cable structure is obtained, and based on the model, a unit damage monitored parameter value change matrix is obtained through calculation. Based on approximate linear relations existing among current value vectors of monitored parameters, current initial value vectors of the monitored parameters, the unit damage monitored parameter value change matrix and current nominal damage vectors of evaluated objects to be solved, non-inferior solutions of the current nominal damage vectors of the evaluated objects are calculated, and therefore when the Temperature changes, the support linear displacement, a load change quantity and a problem cable can be recognized.

  • recognition method for damaged cable load support angular displacement based on mixing monitoring
    2014
    Co-Authors: Han Yulin, Song Jingran, Han Jiayi
    Abstract:

    The invention discloses a recognition method for damaged cable load angular displacement based on mixing monitoring. Whether a mechanical calculation reference model of a cable structure needs to be updated or not is determined through monitoring cable structure Temperature and Environment Temperature, so that a mechanical calculation reference model, taking the structure Temperature and the Environment Temperature into account, of the cable structure is obtained, and based on the model, a unit damage monitored parameter value change matrix is obtained through calculation. Based on approximate linear relations existing among current value vectors of monitored parameters, current initial value vectors of the monitored parameters, the unit damage monitored parameter value change matrix and current nominal damage vectors of evaluated objects to be solved, non-inferior solutions of the current nominal damage vectors of the evaluated objects are calculated, and therefore when the Temperature changes, the support linear displacement, a load change quantity and a damaged cable can be recognized.

Han Yulin - One of the best experts on this subject based on the ideXlab platform.

  • progressive recognition method for damaged cable load and linear displacement through mixed monitoring
    2014
    Co-Authors: Han Yulin, Ye Lei, Han Jiayi
    Abstract:

    The invention relates to a progressive recognition method for damaged cable load and linear displacement through mixed monitoring. According to the method, based on mixed monitoring, whether a mechanical calculation reference model of a cable structure needs to be updated or not is determined by monitoring cable structure Temperature and Environment Temperature, a new mechanical calculation reference model, with the cable structure Temperature and the Environment Temperature included, of the cable structure is obtained, and a unit damage monitored parameter numerical value varying matrix is obtained through calculation based on the model. According to the approximate linear relation existing among current numerical value vectors of monitored parameters, current initial numerical value vectors of the monitored parameters, the unit damage monitored parameter numerical value varying matrix and the current nominal damage vector of an evaluation object to be solved, a noninferior solution of the current nominal damage vector of the evaluation object is calculated, and accordingly generalized displacement of a supporting base, a damaged cable and the load variable quantity can be recognized when the Temperature changes.

  • damaged cable load generalized displacement recognition method through mixed monitoring
    2014
    Co-Authors: Han Yulin, Han Jiayi
    Abstract:

    The invention relates to a damaged cable load generalized displacement recognition method through mixed monitoring. According to the method, based on mixed monitoring, whether a mechanical calculation reference model of a cable structure needs to be updated or not is determined by monitoring cable structure Temperature and Environment Temperature, a new mechanical calculation reference model, with the cable structure Temperature and the Environment Temperature included, of the cable structure is obtained, and a unit damage monitored parameter numerical value varying matrix is obtained through calculation based on the model. According to the approximate linear relation existing among current numerical value vectors of monitored parameters, current initial numerical value vectors of the monitored parameters, the unit damage monitored parameter numerical value varying matrix and the current nominal damage vector of an evaluation object to be solved, a noninferior solution of the current nominal damage vector of the evaluation object is calculated, and accordingly generalized displacement of a supporting base, a damaged cable and the load variable quantity can be recognized when the Temperature changes.

  • progressive recognition method for problem cable load linear displacement based on mixing monitoring
    2014
    Co-Authors: Han Yulin, Ye Lei, Han Jiayi
    Abstract:

    The invention discloses a progressive recognition method for problem cable load linear displacement based on mixing monitoring. Whether a mechanical calculation reference model of a cable structure needs to be updated or not is determined through monitoring cable structure Temperature and Environment Temperature, so that a mechanical calculation reference model, taking the structure Temperature and the Environment Temperature into account, of the cable structure is obtained, and based on the model, a unit damage monitored parameter value change matrix is obtained through calculation. Based on approximate linear relations existing among current value vectors of monitored parameters, current initial value vectors of the monitored parameters, the unit damage monitored parameter value change matrix and current nominal damage vectors of evaluated objects to be solved, non-inferior solutions of the current nominal damage vectors of the evaluated objects are calculated, and therefore when the Temperature changes, the support linear displacement, a load change quantity and a problem cable can be recognized.

  • recognition method for problem cable load linear displacement based on mixing monitoring
    2014
    Co-Authors: Han Yulin, Ye Lei, Han Jiayi
    Abstract:

    The invention discloses a recognition method for problem cable load linear displacement based on mixing monitoring. According to the method, whether a mechanical calculation reference model of a cable structure needs to be updated or not is determined through monitoring cable structure Temperature and Environment Temperature, so that a mechanical calculation reference model, taking the structure Temperature and Environment Temperature into account, of the cable structure is obtained, and based on the model, a unit damage monitored parameter value change matrix is obtained through calculation. Based on approximate linear relations existing among current value vectors of monitored parameters, current initial value vectors of the monitored parameters, the unit damage monitored parameter value change matrix and current nominal damage vectors of evaluated objects to be solved, non-inferior solutions of the current nominal damage vectors of the evaluated objects are calculated, and therefore when the Temperature changes, the support linear displacement, a load change quantity and a problem cable can be recognized.

  • recognition method for damaged cable load support angular displacement based on mixing monitoring
    2014
    Co-Authors: Han Yulin, Song Jingran, Han Jiayi
    Abstract:

    The invention discloses a recognition method for damaged cable load angular displacement based on mixing monitoring. Whether a mechanical calculation reference model of a cable structure needs to be updated or not is determined through monitoring cable structure Temperature and Environment Temperature, so that a mechanical calculation reference model, taking the structure Temperature and the Environment Temperature into account, of the cable structure is obtained, and based on the model, a unit damage monitored parameter value change matrix is obtained through calculation. Based on approximate linear relations existing among current value vectors of monitored parameters, current initial value vectors of the monitored parameters, the unit damage monitored parameter value change matrix and current nominal damage vectors of evaluated objects to be solved, non-inferior solutions of the current nominal damage vectors of the evaluated objects are calculated, and therefore when the Temperature changes, the support linear displacement, a load change quantity and a damaged cable can be recognized.

Yuangong Huang - One of the best experts on this subject based on the ideXlab platform.

  • experimental and theoretical study on an air source heat pump water heater for northern china in cold winter effects of Environment Temperature and switch of operating modes
    Energy and Buildings, 2019
    Co-Authors: Yuangong Huang, Ning Jiang, Mengjie Song, Xiaodong Xie
    Abstract:

    Abstract Because of the urgent need of Environment protection and energy saving, Chinese government has proposed ‘coal-to-electricity’ policy in north China to use air-source heat pump for space heating. Therefore, a cascade heat pump working at −20 °C and providing 75 °C hot water is studied in this work to match original cast iron radiator in cold climate in north China, which was seldom reported. It is also able to provide hot water for industrial and commercial use and work under single-stage mode in summertime. An experimental prototype of the cascade heat pump is designed and set up. Experimental results show COP of the cascade heat pump system can remain 1.69 at Environment Temperature as low as −21 °C and the COP is around 2 for most of the tested cases. In the tested Temperature range, heating capacity varies from 11.32 to 18.93 kW, and discharge Temperature varies from 93.95 to 91.42 °C. Thus, the cascade heat pump reveals good energy saving potential and can work stably demonstrating the feasibility to supply high-Temperature water for space heating in coal-to-electricity retrofit. To study the switch between cascade and single-stage modes, computational models of the heat pump are established, validated with experimental data. The results imply cascade mode should be switched to single-stage mode when ambient Temperature is higher than 20 °C, taking into account the COP, heating capacity, and discharge Temperature. The studied system and results can be also used in other cold weather worldwide to help save energy.

  • experimental and theoretical study on an air source heat pump water heater for northern china in cold winter effects of Environment Temperature and switch of operating modes
    Energy and Buildings, 2019
    Co-Authors: Yingjie Xu, Yuangong Huang, Ning Jiang, Mengjie Song, Xiaoxiao Xu
    Abstract:

    Abstract Because of the urgent need of Environment protection and energy saving, Chinese government has proposed ‘coal-to-electricity’ policy in north China to use air-source heat pump for space heating. Therefore, a cascade heat pump working at −20 °C and providing 75 °C hot water is studied in this work to match original cast iron radiator in cold climate in north China, which was seldom reported. It is also able to provide hot water for industrial and commercial use and work under single-stage mode in summertime. An experimental prototype of the cascade heat pump is designed and set up. Experimental results show COP of the cascade heat pump system can remain 1.69 at Environment Temperature as low as −21 °C and the COP is around 2 for most of the tested cases. In the tested Temperature range, heating capacity varies from 11.32 to 18.93 kW, and discharge Temperature varies from 93.95 to 91.42 °C. Thus, the cascade heat pump reveals good energy saving potential and can work stably demonstrating the feasibility to supply high-Temperature water for space heating in coal-to-electricity retrofit. To study the switch between cascade and single-stage modes, computational models of the heat pump are established, validated with experimental data. The results imply cascade mode should be switched to single-stage mode when ambient Temperature is higher than 20 °C, taking into account the COP, heating capacity, and discharge Temperature. The studied system and results can be also used in other cold weather worldwide to help save energy.

Xiaoxiao Xu - One of the best experts on this subject based on the ideXlab platform.

  • experimental and theoretical study on an air source heat pump water heater for northern china in cold winter effects of Environment Temperature and switch of operating modes
    Energy and Buildings, 2019
    Co-Authors: Yingjie Xu, Yuangong Huang, Ning Jiang, Mengjie Song, Xiaoxiao Xu
    Abstract:

    Abstract Because of the urgent need of Environment protection and energy saving, Chinese government has proposed ‘coal-to-electricity’ policy in north China to use air-source heat pump for space heating. Therefore, a cascade heat pump working at −20 °C and providing 75 °C hot water is studied in this work to match original cast iron radiator in cold climate in north China, which was seldom reported. It is also able to provide hot water for industrial and commercial use and work under single-stage mode in summertime. An experimental prototype of the cascade heat pump is designed and set up. Experimental results show COP of the cascade heat pump system can remain 1.69 at Environment Temperature as low as −21 °C and the COP is around 2 for most of the tested cases. In the tested Temperature range, heating capacity varies from 11.32 to 18.93 kW, and discharge Temperature varies from 93.95 to 91.42 °C. Thus, the cascade heat pump reveals good energy saving potential and can work stably demonstrating the feasibility to supply high-Temperature water for space heating in coal-to-electricity retrofit. To study the switch between cascade and single-stage modes, computational models of the heat pump are established, validated with experimental data. The results imply cascade mode should be switched to single-stage mode when ambient Temperature is higher than 20 °C, taking into account the COP, heating capacity, and discharge Temperature. The studied system and results can be also used in other cold weather worldwide to help save energy.

Xiaodong Xie - One of the best experts on this subject based on the ideXlab platform.

  • experimental and theoretical study on an air source heat pump water heater for northern china in cold winter effects of Environment Temperature and switch of operating modes
    Energy and Buildings, 2019
    Co-Authors: Yuangong Huang, Ning Jiang, Mengjie Song, Xiaodong Xie
    Abstract:

    Abstract Because of the urgent need of Environment protection and energy saving, Chinese government has proposed ‘coal-to-electricity’ policy in north China to use air-source heat pump for space heating. Therefore, a cascade heat pump working at −20 °C and providing 75 °C hot water is studied in this work to match original cast iron radiator in cold climate in north China, which was seldom reported. It is also able to provide hot water for industrial and commercial use and work under single-stage mode in summertime. An experimental prototype of the cascade heat pump is designed and set up. Experimental results show COP of the cascade heat pump system can remain 1.69 at Environment Temperature as low as −21 °C and the COP is around 2 for most of the tested cases. In the tested Temperature range, heating capacity varies from 11.32 to 18.93 kW, and discharge Temperature varies from 93.95 to 91.42 °C. Thus, the cascade heat pump reveals good energy saving potential and can work stably demonstrating the feasibility to supply high-Temperature water for space heating in coal-to-electricity retrofit. To study the switch between cascade and single-stage modes, computational models of the heat pump are established, validated with experimental data. The results imply cascade mode should be switched to single-stage mode when ambient Temperature is higher than 20 °C, taking into account the COP, heating capacity, and discharge Temperature. The studied system and results can be also used in other cold weather worldwide to help save energy.