Perfect isentropic compressor efficiency (ƞc = 100%) and isobaric condition (i.e., constant pressure) are assumed in the case of ideal cycle. While the real conditions are very different, the temperature at the exit of the compressor (i.e., compressor discharge temperature, CDT) increases...
The variations of performance parameters of the nozzle such as co-efficient of discharge (C_d) thrust efficiency (η_s) and impulse efficiency (η_I) and flow field parameters such as density, pressure, velocity etc. are presented as a function of swirl numbers (α, β) and compared...
These designs have significantly higher refrigerant-side heat transfer, thereby enabling a downsizing of the evaporator125, with a resulting decrease in size and weight. The improvements described herein can provide overall efficiency improvements in the refrigeration system, as well as a reduction in ...
- values and they can be calculated considering the isentropic efficiency of the steam turbine used.) Lines of constant dryness fraction (x), sometimes called...- static pressure, temperature and density decrease. Since the process is isentropic, the stagnation properties (e.g. the total ...
2.6.10Polytropic efficiency In an ideal rotodynamic compressor thecompression processwould beisentropic, which means that it would obey the law: Equ 2.66pvγ=constant where: γ=theisentropic exponentof the gas The polytropic exponent is related to the isentropic exponent by the expression: ...
Central theme: the reversible, adiabatic (i.e. isentropic) process sets the limit of best performance of any system It also sets the reference for the definition of efficiency of compressors and turbines For compressors and pumps, work is done on the system: For turbines, work is done by th...
Hence, total separation efficiency will be decreased in the presence of process nonisentropicity. Furthermore, the effect of various back pressures in three above cases are compared together and it is shown that the process nonisentropicity reduces overall pressure recoveryShahsavand...
One-dimensional compressible non-isentropic flows inside four different nozzles and Fanno and Rayleigh's subsonic/supersonic flows are computed, which demonstrate the superior efficiency and accuracy of the present formulation.doi:10.1108/eb023617V. Magi...
The geometric shape of an ejector's walls plays an important role in the efficiency of the ejector. Depending on the outlet-to-throat area ratio of the primary nozzle, the flow exiting the primary nozzle of a supersonic ejector is categorized as under-expanded, isentropic, or over-expanded....