The Experts below are selected from a list of 570678 Experts worldwide ranked by ideXlab platform

Jin Xiao-hua - One of the best experts on this subject based on the ideXlab platform.

Cheng Li - One of the best experts on this subject based on the ideXlab platform.

  • updates to the china Design Standard for energy efficiency in public buildings
    Energy Policy, 2015
    Co-Authors: Tianzhen Hong, Cheng Li
    Abstract:

    The China Design Standard for Energy Efficiency in public buildings (GB 50189) debuted in 2005 when China completed the 10th Five-Year Plan. GB 50189-2005 played a crucial role in regulating the energy efficiency in Chinese commercial buildings. The Standard was recently updated in 2014 to increase energy savings targets by 30% compared with the 2005 Standard. This paper reviews the major changes to the Standard, including expansion of energy efficiency coverage and more stringent efficiency requirements. The paper also discusses the interrelationship of the Design Standard with China's other building energy Standards. Furthermore, comparisons are made with ASHRAE Standard 90.1-2013 to provide contrasting differences in efficiency requirements. Finally recommendations are provided to guide the future Standard revision, focusing on three areas: (1) increasing efficiency requirements of building envelope and HVAC systems, (2) adding a whole-building performance compliance pathway and implementing a ruleset based automatic code baseline model generation in an effort to reduce the discrepancies of baseline models created by different tools and users, and (3) adding inspection and commissioning requirements to ensure building equipment and systems are installed correctly and operate as Designed.

Tianzhen Hong - One of the best experts on this subject based on the ideXlab platform.

  • updates to the china Design Standard for energy efficiency in public buildings
    Energy Policy, 2015
    Co-Authors: Tianzhen Hong, Cheng Li
    Abstract:

    The China Design Standard for Energy Efficiency in public buildings (GB 50189) debuted in 2005 when China completed the 10th Five-Year Plan. GB 50189-2005 played a crucial role in regulating the energy efficiency in Chinese commercial buildings. The Standard was recently updated in 2014 to increase energy savings targets by 30% compared with the 2005 Standard. This paper reviews the major changes to the Standard, including expansion of energy efficiency coverage and more stringent efficiency requirements. The paper also discusses the interrelationship of the Design Standard with China's other building energy Standards. Furthermore, comparisons are made with ASHRAE Standard 90.1-2013 to provide contrasting differences in efficiency requirements. Finally recommendations are provided to guide the future Standard revision, focusing on three areas: (1) increasing efficiency requirements of building envelope and HVAC systems, (2) adding a whole-building performance compliance pathway and implementing a ruleset based automatic code baseline model generation in an effort to reduce the discrepancies of baseline models created by different tools and users, and (3) adding inspection and commissioning requirements to ensure building equipment and systems are installed correctly and operate as Designed.

  • a close look at the china Design Standard for energy efficiency of public buildings
    Energy and Buildings, 2009
    Co-Authors: Tianzhen Hong
    Abstract:

    This paper takes a close look at the China national Standard GB50189-2005, Design Standard for Energy Efficiency of Public Buildings, which was enforced on July 1, 2005. The paper first reviews the Standard, then compares the Standard with ASHRAE Standard 90.1-2004 to identify discrepancies in code coverage and stringency, and recommends some energy conservation measures that can be evaluated in the Design of public buildings to achieve energy savings beyond the Standard. The paper also highlights several important features of 90.1-2004 that may be considered as additions to the GB50189-2005 Standard during the next revision. At the end the paper summarizes the latest developments in building energy Standards and rating systems in China and the US.

Philippe Charpentier - One of the best experts on this subject based on the ideXlab platform.

  • feasibility study and uncertainties in the validation of an existing safety related control circuit with the iso 13849 1 2006 Design Standard
    Reliability Engineering & System Safety, 2014
    Co-Authors: Sabrina Jocelyn, James Baudoin, Yuvin Chinniah, Philippe Charpentier
    Abstract:

    In industry, machine users and people who modify or integrate equipment often have to evaluate the safety level of a safety-related control circuit that they have not necessarily Designed. The modifications or integrations may involve work to make an existing machine that does not comply with normative or regulatory specifications safe. However, how can a circuit performing a safety function be validated a posteriori? Is the validation exercise feasible? What are the difficulties and limitations of such a procedure? The aim of this article is to answer these questions by presenting a validation study of a safety function of an existing machine. A plastic injection molding machine is used for this study, as well as Standard ISO 13849-1:2006. Validation consists of performing an a posteriori (post-Design) estimation of the performance level of the safety function. The procedure is studied for two contexts of use of the machine: in industry, and in laboratory. The calculations required by the ISO Standard were done using Excel, followed by SIStema software. It is shown that, based on the context of use, the estimated performance level was different for the same safety-related circuit. The variability in the results is explained by the assumptions made by the person undertaking the validation without the involvement of the machine Designer.

  • feasibility study and uncertainties in the validation of an existing safety related control circuit with the iso 13849 1 2006 Design Standard
    Reliability Engineering & System Safety, 2014
    Co-Authors: Sabrina Jocelyn, James Baudoin, Yuvin Chinniah, Philippe Charpentier
    Abstract:

    In industry, machine users and people who modify or integrate equipment often have to evaluate the safety level of a safety-related control circuit that they have not necessarily Designed. The modifications or integrations may involve work to make an existing machine that does not comply with normative or regulatory specifications safe. However, how can a circuit performing a safety function be validated a posteriori? Is the validation exercise feasible? What are the difficulties and limitations of such a procedure? The aim of this article is to answer these questions by presenting a validation study of a safety function of an existing machine. A plastic injection molding machine is used for this study, as well as Standard ISO 13849-1:2006. Validation consists of performing an a posteriori (post-Design) estimation of the performance level of the safety function. The procedure is studied for two contexts of use of the machine: in industry, and in laboratory. The calculations required by the ISO Standard were done using Excel, followed by SIStema software. It is shown that, based on the context of use, the estimated performance level was different for the same safety-related circuit. The variability in the results is explained by the assumptions made by the person undertaking the validation without the involvement of the machine Designer.

Sabrina Jocelyn - One of the best experts on this subject based on the ideXlab platform.

  • feasibility study and uncertainties in the validation of an existing safety related control circuit with the iso 13849 1 2006 Design Standard
    Reliability Engineering & System Safety, 2014
    Co-Authors: Sabrina Jocelyn, James Baudoin, Yuvin Chinniah, Philippe Charpentier
    Abstract:

    In industry, machine users and people who modify or integrate equipment often have to evaluate the safety level of a safety-related control circuit that they have not necessarily Designed. The modifications or integrations may involve work to make an existing machine that does not comply with normative or regulatory specifications safe. However, how can a circuit performing a safety function be validated a posteriori? Is the validation exercise feasible? What are the difficulties and limitations of such a procedure? The aim of this article is to answer these questions by presenting a validation study of a safety function of an existing machine. A plastic injection molding machine is used for this study, as well as Standard ISO 13849-1:2006. Validation consists of performing an a posteriori (post-Design) estimation of the performance level of the safety function. The procedure is studied for two contexts of use of the machine: in industry, and in laboratory. The calculations required by the ISO Standard were done using Excel, followed by SIStema software. It is shown that, based on the context of use, the estimated performance level was different for the same safety-related circuit. The variability in the results is explained by the assumptions made by the person undertaking the validation without the involvement of the machine Designer.

  • feasibility study and uncertainties in the validation of an existing safety related control circuit with the iso 13849 1 2006 Design Standard
    Reliability Engineering & System Safety, 2014
    Co-Authors: Sabrina Jocelyn, James Baudoin, Yuvin Chinniah, Philippe Charpentier
    Abstract:

    In industry, machine users and people who modify or integrate equipment often have to evaluate the safety level of a safety-related control circuit that they have not necessarily Designed. The modifications or integrations may involve work to make an existing machine that does not comply with normative or regulatory specifications safe. However, how can a circuit performing a safety function be validated a posteriori? Is the validation exercise feasible? What are the difficulties and limitations of such a procedure? The aim of this article is to answer these questions by presenting a validation study of a safety function of an existing machine. A plastic injection molding machine is used for this study, as well as Standard ISO 13849-1:2006. Validation consists of performing an a posteriori (post-Design) estimation of the performance level of the safety function. The procedure is studied for two contexts of use of the machine: in industry, and in laboratory. The calculations required by the ISO Standard were done using Excel, followed by SIStema software. It is shown that, based on the context of use, the estimated performance level was different for the same safety-related circuit. The variability in the results is explained by the assumptions made by the person undertaking the validation without the involvement of the machine Designer.