本产品是一种PDF格式，包含指向以下文件的链接:与演讲者音频录制（录制的演示文稿）同步的PowerPoint幻灯片、幻灯片的PDF文件，以及如上所述的纯音频（mp3）。新型低GWP和天然制冷剂的性能，如HFO、R-32、R-152a、氨、碳氢化合物、CO2等，对制冷和空调系统及其部件的性能和效率有影响。本课程特别关注使用可燃制冷剂（如碳氢化合物和氨）的设备的设计、操作和维修。 美国市场上使用的R600a家用冰箱/冷冻机的例子说明了这些问题和挑战。两篇专题介绍全面分析了含氨设备的效率和操作方面。使用R-600 Abrent Junge，P.E.的家用冰箱的循环效率、电荷最小化和服务，成员产品包括:幻灯片（pdf）、录音演示、音频（mp3）最小能量设计实践，适用于无空气鼓风的Laas Visser，成员产品包括:幻灯片（pdf）、录音演示、音频（mp3）消除肉类包装厂中的冷凝，MemberProduct包含: 幻灯片（pdf），录音演示，音频（mp3）引用:ASHRAE研讨会录音，2013年冬季会议，德克萨斯州达拉斯。

This product is a PDF that contains links to files that consist of PowerPoint slides synchronized with the audio-recording of the speaker (recorded presentation), PDF files of the slides, and audio only (mp3) as noted.The properties of the new low-GWP and natural refrigerants, such as HFO, R-32, R-152a, ammonia, hydrocarbons, CO2, etc. have an impact on the performance and efficiency of the refrigeration and air-conditioning systems and their components. A special attention in this session is dedicated to the design, operation, and servicing equipment with flammable refrigerants, such as hydrocarbons and ammonia. The issues and challenges are illustrated in the example of a household refrigerator/freezer with R600a for use on the U.S. market. Two presentations provide a comprehensive analysis of efficiency and operational aspects of equipment with ammonia.Cycle Efficiency, Charge Minimization, and Service of Household Refrigerators with R-600aBrent Junge, P.E., MemberProduct Contains: Slides (pdf), Recorded Presentation, Audio (mp3)Minimum Energy Design Practice for Air Blast FreezingKlaas Visser, MemberProduct Contains: Slides (pdf), Recorded Presentation, Audio (mp3)Elimination of Condensation in Meat Packing PlantsKlaas Visser, MemberProduct Contains: Slides (pdf), Recorded Presentation, Audio (mp3)