being introduced into the Pelton Wheel at the saturation temperature or at a temperature slightly above the saturation temperature of the liquefied gas; and raising the enthalpy of the liquefied gas after it has been withdrawn from the Pelton Wheel to an enthalpy above the enthalpy of saturated ...
For instance, if we have expansion of gas or steam in a turbine, more of the heat energy is converted into work at the output shaft if the change in entropy is small. For a turbine or compressor, the change of entropy is indicated by the ‘isentropic efficiency’. The ideal is 100%,...
Compression and Expansion of Gases Isothermal and isentropic gas compression and expansion processes. Speed of Sound - Equations Calculate the speed of sound (the sonic velocity) in gases, fluids or solids. Turbo Machines - Specific Work done by Pumps, Compressors or Fans ...
Define isentropic. isentropic synonyms, isentropic pronunciation, isentropic translation, English dictionary definition of isentropic. adj. Without change in entropy; at constant entropy. is′en·tro′pi·cal·ly adv. American Heritage® Dictionary of
The change of entropy for a perfect gas is given by ΔS12=s2−s1=cPlnT2T1−Rlnp2p1where, from the perfect gas law, R=(κ−1)cpκ=(1.35−1)×1.1001.35=0.285kJ/kg K Thus the change of entropy during the expansion process is s2−s1=1.1ln7861273−0.285ln110=−0.5304...
there are a large number of gas dynamic problems with entropy increase negligibly slight, which for the purpose of analysis are assumed to be isentropic. Examples are flow through subsonic and supersonic nozzles, as in wind tunnels and rocket engines; and shock-free flow over a wing, fuselag...
Features of isentropic expansion of warm dense matter (WDM) created by intense energy fluxes (strong shock compression or instant isochoric heating by laser or heavy ions) are under discussion in situation when ($i$) -- thermodynamic trajectory of such expansion crosses binodal of liquid-gas ...
Isentropic (reversible adiabatic) expansion of the gas (isentropic work output). For this step (2 to 3 on Figure...- values and they can be calculated considering the isentropic efficiency of the steam turbine used.) Lines of constant dryness fraction (x), sometimes called...- flow M***...
Polytropic process Compression or expansion of a gas where the relationship PVn = constant applies. Pressure ratio Ratio between absolute discharge pressure and absolute inlet pressure. Pressure regulator A valve or similar device for reducing line pressure to a lower (constant) pressure. Pulsation damp...
of such valves is in the compression and/or expansion of gases. However, the valve of the present invention may be suitable for use in any application that needs a high efficiency, large valve area, fast valve response and low pressure losses. This covers, but is not limited to, engines,...