ABSTRACT
The equivalent method is a kind of common scientific thinking method, which means, in a sense, unknown, complicated, and intractable issues could be converted into known, simple, and tractable ones on the premise that effects are same. It has been widely applied in mechanics, kinematics, electricity, optics, etc. which really means complicated practical problems are turned into simple familiar ones under the same effect. It will be easy to highlight the main factors, seize the essence and bring out laws if the team uses the simpler factors instead of the complicated ones. In this work, the testing about the leakage of the working medium was conducted inside compressors by using an equivalent device as the core. The selected dynamic equivalence leakage testing scheme in this work is shown in Fig. 1.
