本项目的目标是对各种现场制造的机械接头的坚固性和密封性进行实验研究，这些接头用于连接制冷剂管道和系统部件，用于使用易燃制冷剂的任何类型的真空和制冷应用（ASHRAE标准34，A2L、A2或A3级）。研究的重点是无火焰连接方法，如现场安装或现场服务中使用的扩口、压缩或压接/压接式配件。这项工作的动机体现在各种低GWP易燃制冷剂的预期使用上。尽管制冷剂接头应无泄漏，但由于潜在的可燃性问题而增加的安全问题增加了识别和描述制冷剂管道和部件的合适连接技术的需要。 ASHRAEStandard 147提供了有关当前行业组件和产品设计要求的进一步信息，以限制制冷剂泄漏以及固定设备中可接受的泄漏。这项研究的结果被视为各种ASHRAE标准和其他与制冷机安全相关的规范以及整个行业的重要输入。引文:ASHRAE研究

The objective of this project is to experimentallyinvestigate the robustness and leak-tightness of various field-made mechanicaljoints used to connect refrigerant piping and system components for any kind ofHVAC&R application employing flammable refrigerants (ASHRAE Standard 34,classes A2L, A2, or A3). The focus of the study is on flame-free joiningmethods, such as flare, compression, or crimp/press type fittings used in fieldinstallation or field service. The motivation of the work is seen in thedesired use of various low-GWP refrigerant candidates that are flammable. Whileany refrigerant joint should be leak-free, the added safety concerns due topotential flammability issues increase the need to identify and characterizesuitable joining techniques for refrigerant piping and components. ASHRAEStandard 147 provides further information on current industry component andproduct design requirements to limit refrigerant leakage as well as acceptableleaks in stationary equipment. The outcome of this research is seen asimportant input to various ASHRAE standards and other relevant codes related torefrigerant safety as well as for the industry in general.