为提高创新设计的效率和改善产品的生态性能,提出一种面向产品创新及生态性改进的设计方法。该方法以发明问题解决理论(Theory of inventive problem solving,TRIZ)的对标分析、功能导向搜索和特征传递等现代工具为基础,对产品进行创新...为提高创新设计的效率和改善产品的生态性能,提出一种面向产品创新及生态性改进的设计方法。该方法以发明问题解决理论(Theory of inventive problem solving,TRIZ)的对标分析、功能导向搜索和特征传递等现代工具为基础,对产品进行创新设计,快速构建多个初步方案。根据TRIZ的48个工程参数,建立工程参数与生态设计效率参数的关联表,提出了利用该关联表和TRIZ冲突分析工具对初步方案进行生态性改进的措施。基于TRIZ理想度概念,提出综合运用功能性理想度和生态性理想度对系统方案进行评价的新方法,评估设计方案的理想度。根据这些方法,构建了流程化的产品创新及生态性改进设计过程模型。将该模型应用于设计示例,快速得到一系列初步方案及生态性改进方案,并方便有效地对不同方案进行定量评估,实现方案优选,从而验证了该设计方法提高创新效率及改善生态性能的明显效果。展开更多
Pulsed electric field(PEF)technology is a highly promising non-thermal processing technique,which holds great potential for sterilizing liquid food.The effectiveness of this treatment depends on two crucial factors:pu...Pulsed electric field(PEF)technology is a highly promising non-thermal processing technique,which holds great potential for sterilizing liquid food.The effectiveness of this treatment depends on two crucial factors:pulse parameters and the structure of the processor.In this study,we focus on optimizing the shape of insulators within the PEF processor to improve the sterilization effect.This research provides a reliable technical reference for designing industrial equipment.The numerical simulation of multi-physics fields was employed to analyze the temperature,electric field,and fluid field distributions for different insulators.Ultimately,the geometric structure of the insulator was optimized by embedding a 0.7-mm arc.Sterilization experiments were then conducted on Escherichia coli and Staphylococcus aureus suspensions with conductivities similar to those of real grapefruit juice.The sterilization effect of the processor with the optimized structure and the maximum applied voltage was examined at the same driving frequency.The results indicate that compared to the original structure,there is an increase in withstanding voltage by 5–10 kV while maintaining significantly improved bactericidal effects at the same applied voltage.Furthermore,we preliminarily discussed the sterilization mechanism by combining electroporation theory with the electroporation threshold of S.aureus.展开更多
文摘为提高创新设计的效率和改善产品的生态性能,提出一种面向产品创新及生态性改进的设计方法。该方法以发明问题解决理论(Theory of inventive problem solving,TRIZ)的对标分析、功能导向搜索和特征传递等现代工具为基础,对产品进行创新设计,快速构建多个初步方案。根据TRIZ的48个工程参数,建立工程参数与生态设计效率参数的关联表,提出了利用该关联表和TRIZ冲突分析工具对初步方案进行生态性改进的措施。基于TRIZ理想度概念,提出综合运用功能性理想度和生态性理想度对系统方案进行评价的新方法,评估设计方案的理想度。根据这些方法,构建了流程化的产品创新及生态性改进设计过程模型。将该模型应用于设计示例,快速得到一系列初步方案及生态性改进方案,并方便有效地对不同方案进行定量评估,实现方案优选,从而验证了该设计方法提高创新效率及改善生态性能的明显效果。
基金the Key R&D Program of Guangdong Province(No.2018B020239001),China.
文摘Pulsed electric field(PEF)technology is a highly promising non-thermal processing technique,which holds great potential for sterilizing liquid food.The effectiveness of this treatment depends on two crucial factors:pulse parameters and the structure of the processor.In this study,we focus on optimizing the shape of insulators within the PEF processor to improve the sterilization effect.This research provides a reliable technical reference for designing industrial equipment.The numerical simulation of multi-physics fields was employed to analyze the temperature,electric field,and fluid field distributions for different insulators.Ultimately,the geometric structure of the insulator was optimized by embedding a 0.7-mm arc.Sterilization experiments were then conducted on Escherichia coli and Staphylococcus aureus suspensions with conductivities similar to those of real grapefruit juice.The sterilization effect of the processor with the optimized structure and the maximum applied voltage was examined at the same driving frequency.The results indicate that compared to the original structure,there is an increase in withstanding voltage by 5–10 kV while maintaining significantly improved bactericidal effects at the same applied voltage.Furthermore,we preliminarily discussed the sterilization mechanism by combining electroporation theory with the electroporation threshold of S.aureus.
