Reinterpretation of AHRI’s Risk assessment of residential heat pump systems using A2L flammable refrigerants

Completely presents the AHRI’s risk assessment report. The report evaluates the risks of three A2L flammable refrigerants of R32, R1234yf and R1234ze(E) used in residential heat pump systems from the aspects of CFD simulation, testing validation and fault tree analysis. Gives the characteristic parameters of the three refrigerants. Presents the schemes, modes and results of the CFD simulation, the test conditions and results of the model test, and the schemes and results of the fault tree analysis. Puts forward two extending problems.