The research results show deafly that the P-T EOS possess more higher calculation precision than R-K-S and P-R EOS,it can be used for calculating accuraterly the thermodynamic properties of mixed WF,and offer a new method of finding a new working fluid.
In order to study the performance of new refrigerant TJR01,the basic physical properties of TJR01 and R22 were compared,and the heat pump water heater filled with TJ R01 was put into heat-balance room and experimented.
Experimental study has been carried out to investigate heat transfer perfor-mance of two-phase closed thermosyphon with N-methyl pyrrolidone (C5H9NO3) as working medium.
A method of calculating a plasmodynamic laser from the given characteristics of the working fluid and the supersonic nozzle and from the stagnation parameters of the plasma in the nozzle forechamber is proposed.
A comparison of the calculation results obtained in solving this equation with experimental data on boiling of highly superheated water and the R-113 refrigerant reveals their good agreement.
The dependence is proposed for calculating the heat transfer deterioration boundary, which generalizes the data obtained for different coolants (water, CO2, and Refrigerant-12).
The relationship between saturated liquid corresponding enthalpy and corresponding temperature of refrigerant mixtures accorded with that of pure components.
A fluid with a low speed of sound (finely dispersed medium with gas bubbles, whose dimensionless equation of state coincides with the dimensionless equation of state of water [5]) was used as the working medium.
Secondly, the state equation of refrigerants was applied for computing relationship between temperature and enthalpy, else based on some suppositions, temperature differences between 15 sorts of refrigerants and heat-transfer fluids were gotten too.
Lastly, after calculating and comparing the additive exergy loss among 15 sorts of refrigerants, which resulted from the changing of temperature difference, their cycling characters evaluation were presented.