Steam Tables By Rs Khurmi -2-.pdf 1 Upd <Trusted Source>
This specific document (often labeled as "Appendix 1" or "Steam Tables" in the book's later editions) is a critical tool for mechanical engineering students and professionals. It provides the thermodynamic properties of water and steam (water vapor) necessary for solving problems related to steam turbines, boilers, and heat engines.
- Rankine cycle: Determine enthalpies at turbine inlet (superheated vapor) and condenser outlet (saturated liquid) to compute turbine work, pump work, heat added, and cycle thermal efficiency.
- Boiler and condenser sizing: Use mass and energy balances with enthalpy values to size heat exchangers, estimate fuel requirements, and evaluate condensation rates.
- Quality (x) calculations: For two-phase states, steam tables allow computation of steam quality x from measured enthalpy or specific volume: x = (h - hf)/(hg - hf), which is critical for assessing turbine inlet wetness and preventing blade erosion.
- Property interpolation: When required temperatures or pressures fall between tabulated values, linear interpolation between nearest table entries yields sufficiently accurate property estimates for most engineering problems.
Enthalpy ($h_f$, $h_fg$, $h_g$):
- Limited theoretical explanations: The book primarily focuses on presenting data and does not provide detailed theoretical explanations.
- Assumes prior knowledge: The book assumes that users have a basic understanding of thermodynamics and steam properties.
- Absolute pressure (bar)
- Specific volume of saturated liquid ((v_f)) and saturated vapor ((v_g)) in m³/kg
- Specific enthalpy of liquid ((h_f)), evaporation ((h_fg)), and vapor ((h_g)) in kJ/kg
- Specific entropy ((s_f), (s_fg), (s_g)) in kJ/kg·K