Engineering thermodynamics/Steam tables/Worksheet for evaluating the accuracy of Wikiversity steam table entries
Superheated volumes checked using http://webbook.nist.gov/chemistry/fluid/ edit
At values specified by the table edit
T(Celsius) = 350 ... p(bars) = 1.50E+02 bars ... (0.17% error) edit
- (Superheated steam) values from the Wikiversity table:
- v = volume (m^3/kg) = 1.15E-02
- "True" values from http://webbook.nist.gov/chemistry/fluid/:
- v = volume (m^3/kg) = 0.011481
- Wikipedia's percent error (X_wiki - X_true)/X_true:
- error(v)= .166%
T(Celsius) = 380 ... p(bars) = 400 ... (0.11% error) edit
- (Superheated steam) values from the Wikiversity table:
- v = volume (m^3/kg) = .00168
- "True" values from http://webbook.nist.gov/chemistry/fluid/:
- v = volume (m^3/kg) = .0016819
- Wikipedia's percent error (X_wiki - X_true)/X_true:
- error(v)= 0.11%
T(Celsius) = 500 ... p(bars) = 500 (0% error) edit
- (Superheated steam) values from the Wikiversity table:
- v = volume (m^3/kg) = 0.00389
- "True" values from http://webbook.nist.gov/chemistry/fluid/:
- v = volume (m^3/kg) = 0.00389
- error(v)= 0%
At values midway between table specifications edit
T(Celsius) = 400.....P midway between 50 bars and 100 edit
- Wikiversity table:
- v1(m^3/kg) = .0264
- v2(m^3/kg) = .0578
- v_wiki = (v1+v2)/2 = .0421
- http://webbook.nist.gov/chemistry/fluid/
- P = (p1+p2)/2 = 75 bars
- v_true = .036966
- %error = 13.9%
T(Celsius) = xxx .....P midway between xxx bars and xxx edit
- Wikiversity table:
- v1(m^3/kg) = xxx
- v2(m^3/kg) = xxx
- v_wiki = (v1+v2)/2 = xxx
- http://webbook.nist.gov/chemistry/fluid/
- P = (p1+p2)/2
- v_true
- %error =
T(Celsius) = xxx .....P midway between xxx bars and xxx edit
- Wikiversity table:
- v1(m^3/kg) = xxx
- v2(m^3/kg) = xxx
- v_wiki = (v1+v2)/2 = xxx
- http://webbook.nist.gov/chemistry/fluid/
- P = (p1+p2)/2
- v_true
- %error =
Saturation (water/steam) checked using http://webbook.nist.gov/chemistry/fluid/ edit
T(Celsius) = ??? edit
- (Superheated steam) values from the Wikiversity table:
- p = pressure (pars) = ???
- v-fluid = volume (m^3/kg) = ???
- v-gas = volume (m^3/kg) = ???
- u-fluid = energy (kJ/kg) = ???
- u-gas= energy (kJ/kg) = ???
- h-fluid = enthalpy (kJ/kg) = ???
- h-gas= = enthalpy (kJ/kg) = ???
- s-fluid = entropy (kJ/kg) = ???
- s-gas= = enthalpy (kJ/kg) = ???
- "True" values from http://webbook.nist.gov/chemistry/fluid/:
- p = pressure (pars) = ???
- v-fluid = volume (m^3/kg) = ???
- v-gas = volume (m^3/kg) = ???
- u-fluid = energy (kJ/kg) = ???
- u-gas = energy (kJ/kg) = ???
- h-fluid = enthalpy (kJ/kg) = ???
- h-gas = enthalpy (kJ/kg) = ???
- s-fluid = entropy (kJ/kg) = ???
- s-gas = enthalpy (kJ/kg) = ???
- Wikipedia's percent error (X_wiki - X_true)/X_true:
- error: p = pressure (pars) = ???
- error: v-fluid = volume (m^3/kg) = ???
- error: v-fluid= volume (m^3/kg) = ???
- error: u-gas = energy (kJ/kg) = ???
- error: u-gas = energy (kJ/kg) = ???
- error: h-fluid = enthalpy (kJ/kg) = ???
- error: h-gas = enthalpy (kJ/kg) = ???
- error: s-fluid = entropy (kJ/kg) = ???
- error: s-gas = enthalpy (kJ/kg) = ???
- (optional): who are you?
T(Celsius) = ??? edit
- (Superheated steam) values from the Wikiversity table:
- p = pressure (pars) = ???
- v-fluid = volume (m^3/kg) = ???
- v-gas = volume (m^3/kg) = ???
- u-fluid = energy (kJ/kg) = ???
- u-gas= energy (kJ/kg) = ???
- h-fluid = enthalpy (kJ/kg) = ???
- h-gas= = enthalpy (kJ/kg) = ???
- s-fluid = entropy (kJ/kg) = ???
- s-gas= = enthalpy (kJ/kg) = ???
- "True" values from http://webbook.nist.gov/chemistry/fluid/:
- p = pressure (pars) = ???
- v-fluid = volume (m^3/kg) = ???
- v-gas = volume (m^3/kg) = ???
- u-fluid = energy (kJ/kg) = ???
- u-gas = energy (kJ/kg) = ???
- h-fluid = enthalpy (kJ/kg) = ???
- h-gas = enthalpy (kJ/kg) = ???
- s-fluid = entropy (kJ/kg) = ???
- s-gas = enthalpy (kJ/kg) = ???
- Wikipedia's percent error (X_wiki - X_true)/X_true:
- error: p = pressure (pars) = ???
- error: v-fluid = volume (m^3/kg) = ???
- error: v-fluid= volume (m^3/kg) = ???
- error: u-gas = energy (kJ/kg) = ???
- error: u-gas = energy (kJ/kg) = ???
- error: h-fluid = enthalpy (kJ/kg) = ???
- error: h-gas = enthalpy (kJ/kg) = ???
- error: s-fluid = entropy (kJ/kg) = ???
- error: s-gas = enthalpy (kJ/kg) = ???
- (optional): who are you?
T(Celsius) = ??? edit
- (Superheated steam) values from the Wikiversity table:
- p = pressure (pars) = ???
- v-fluid = volume (m^3/kg) = ???
- v-gas = volume (m^3/kg) = ???
- u-fluid = energy (kJ/kg) = ???
- u-gas= energy (kJ/kg) = ???
- h-fluid = enthalpy (kJ/kg) = ???
- h-gas= = enthalpy (kJ/kg) = ???
- s-fluid = entropy (kJ/kg) = ???
- s-gas= = enthalpy (kJ/kg) = ???
- "True" values from http://webbook.nist.gov/chemistry/fluid/:
- p = pressure (pars) = ???
- v-fluid = volume (m^3/kg) = ???
- v-gas = volume (m^3/kg) = ???
- u-fluid = energy (kJ/kg) = ???
- u-gas = energy (kJ/kg) = ???
- h-fluid = enthalpy (kJ/kg) = ???
- h-gas = enthalpy (kJ/kg) = ???
- s-fluid = entropy (kJ/kg) = ???
- s-gas = enthalpy (kJ/kg) = ???
- Wikipedia's percent error (X_wiki - X_true)/X_true:
- error: p = pressure (pars) = ???
- error: v-fluid = volume (m^3/kg) = ???
- error: v-fluid= volume (m^3/kg) = ???
- error: u-gas = energy (kJ/kg) = ???
- error: u-gas = energy (kJ/kg) = ???
- error: h-fluid = enthalpy (kJ/kg) = ???
- error: h-gas = enthalpy (kJ/kg) = ???
- error: s-fluid = entropy (kJ/kg) = ???
- error: s-gas = enthalpy (kJ/kg) = ???
- (optional): who are you?