Issues regarding hysteresis diagrams in the calculation of the thermal efficiency of heating furnaces.
Thread Content
May I ask everyone, does the enthalpy table in Appendix A.1 of \"SHT 3045-2003 Design and Calculation of Thermal Efficiency for Petrochemical Tubular Furnaces\" have a source? Or is there a formula for calculation? The two standard authors are Bai Wenkang and Huang Huanmin; the available literature dates mainly from the late 1980s. It is likely that they have retired by now, and there are no contact details available.
The enthalpy value H = U + pV, where U is the internal energy. The enthalpy value of various substances is a property parameter, which is generally measured.
These enthalpy values can now be found using software or charts. The calculation process is quite complex and is something for researchers to handle; you can search for IFC formulas, as they contain the formulas you need