We have already seen that the change in specific enthalpy of a perfect gas is δh=cp.δT and that, from the SFEE, the power developed in, say, a turbine is P=m˙(h1−h2) • Therefore the power produced is proportional to the change in temperature through the turbine. Figure 2.5...
To describe the model-based method for condition monitoring and diagnosis, somefluidicbasics of compressors are clarified in the following. The most relevant variables to describe the thermodynamic transfer behavior from inlet to discharge are the specificisentropicenthalpy difference Δℎs, theisentropic...
discharge,velocityandcontractioncoefficientsmustbesmallerthanunity ifnot,giveexplanationforthenon-physicalvalues discussion of sources of error (unsteadiness, extent of valve opening, measurement of shooting range) A Deeper Look at Variable Specific Heats In classical statistical mechanics, the specific heat ...
where h1 is the suction enthalpy, h2 is the discharge enthalpy, P1 is the suction pressure, P2 is the discharge pressure, s is the constant entropy at both the suction and discharge, R is the ideal gas constant, T1 is the suction temperature, and γ is the ratio of specific heat capaci...
hf –Specific enthalpy of engine-supplying fuel, kJ/kg. ha –Specific enthalpy of air, kJ/kg. hex –Specific enthalpy of EG, kJ/kg. hw –Specific enthalpy of cooling water, kJ/kg. Cp-ex –Isobaric mass heat capacity of EG, kJ/kg K. Cp-w –Isobaric mass heat capacity of water,...