Sneak analysis and its applications in thermal systems

Abstract The traditional method of sneak analysis of a thermal system is based on mass flow and cannot reflect system functionality and overall characteristics. Therefore, this study presents a network tree topology model based on energy flow. The heat transfer process in the thermal system is described by introducing the concept of energy flow. According to the design function of the thermal system, hot and cold source of the system are defined as the beginning and end of path search, respectively. All possible paths of heat transfer for the thermal system are obtained. The method is applied in the central cooling system of a ship and compared with sneak analysis based on mass flow. Results of the comparison show that sneak analysis based on energy flow can find new sneak problems on the basis of sneak analysis based on mass flow. Thus, the new method is feasible and effective.

[1]  Darryl Kellner,et al.  Sneak circuit analysis: Lessons learned for beginners based on a successful application , 2016, 2016 Annual Reliability and Maintainability Symposium (RAMS).

[2]  Ping Xu,et al.  Research of Node Importance for Sneak Circuit Analysis Based on Quantitative Model , 2014 .

[3]  Ping Xu,et al.  Sneak timing analysis based on time Petri net in power system , 2009, 2009 4th IEEE Conference on Industrial Electronics and Applications.

[4]  J. B. Bowles,et al.  Combining sneak circuit analysis and failure modes and effects analysis , 1993, Annual Reliability and Maintainability Symposium 1993 Proceedings.

[5]  Wenyuan Li,et al.  Reliability assessment of photovoltaic power systems: Review of current status and future perspectives , 2013 .

[6]  J. H. Craig.  A. software reliability methodology using software sneak analysis, SW FMEA and the integrated system analysis approach , 2003, Annual Reliability and Maintainability Symposium, 2003..

[7]  J. P. Rankin.  Sneak-circuit analysis , 1973 .

[8]  S. D. Probert,et al.  Development and implementation of preventive-maintenance practices in Nigerian industries , 2006 .

[9]  Hu Changhua,et al.  Combining qualitative simulation with functional labels for automated sneak circuit analysis , 2000, Proceedings of the 3rd World Congress on Intelligent Control and Automation (Cat. No.00EX393).

[10]  Tian Zhao,et al.  An alternative energy flow model for analysis and optimization of heat transfer systems , 2017 .

[11]  Jian-Bo Yang,et al.  Risk evaluation in failure mode and effects analysis using fuzzy weighted geometric mean , 2009, Expert Syst. Appl..

[12]  Qun Chen,et al.  A thermal resistance-based method for the optimal design of central variable water/air volume chiller systems , 2015 .

[13]  László Sikos,et al.  Reliability, availability and maintenance optimisation of heat exchanger networks , 2010 .

[14]  Nune Ravi Sankar,et al.  Modified approach for prioritization of failures in a system failure mode and effects analysis , 2001 .

[15]  Qun Chen,et al.  Electrical circuit analogy for heat transfer analysis and optimization in heat exchanger networks , 2015 .

[16]  Chris Price,et al.  Effective automated sneak circuit analysis , 2002, Annual Reliability and Maintainability Symposium. 2002 Proceedings (Cat. No.02CH37318).

[17]  F. E. Walker.  Sneak circuit analysis automation , 1989, Proceedings., Annual Reliability and Maintainability Symposium.

[18]  Shou Guang Yao,et al.  Safety Analysis for Complex Thermal System Based on Sneak Path Technique , 2012 .

[19]  S. M. Seyed Hosseini,et al.  Reprioritization of failures in a system failure mode and effects analysis by decision making trial and evaluation laboratory technique , 2006, Reliab. Eng. Syst. Saf..

[20]  Qun Chen,et al.  Direct optimal control of valve openings in heat exchanger networks and experimental validations , 2015 .

[21]  Yang Zongming,et al.  Sneak Circuit Analysis and Its Application in Thermal System , 2007 .

[22]  Xu Jun-feng,et al.  Application of sneak circuit analysis technology on the design of warship pipelines , 2011 .

[23]  S. G. Godoy,et al.  Sneak Circuit and Software Sneak Analysis , 1978 .

[24]  Marie Bysveen,et al.  Hydrogen fuel supply system and re-heat gas turbine combustion , 2012 .