10 Now find the corresponding enthalpy values for 150☌ and 200☌, Hhi and Hlow. The only condition is that there should not be any phase transition (or phase change) of substances. Note that the Excel program uses SI units for the thermodynamic property values. Interpolating follows the formula, HD (desired enthalpy) For our example problem, 190☌ 9 Locate the temperature values just above and below 190☌, Thi and Tlow. This online calculator can solve thermodynamic equilibrium problems, such as finding the final temperature when mixing fluids, or finding the required temperature for one of the fluids to achieve a final mixed temperature. The program is compatible with all versions of Excel.Ĭlick on this link to see a screen capture of the Excel spreadsheet for the superheated region. To use the calculator you need to have Microsoft Excel installed on your computer. You need to uncompress this file before you can access the calculator. In the subcooled and superheated region, you can specify ( P, T), ( P, v), ( P, u), ( P, h), or ( P, s), and automatically solve for the remaining thermodynamic properties.Īll the files that come with this calculator are contained in a single (compressed) file, in the "zip" format. In the saturated region, you can specify any of the six thermodynamic properties and automatically solve for the remaining five. It calculates thermodynamic properties in the subcooled region for an absolute pressure range of 5-50 MPa, using 7 data tables spread apart over this range. The Excel spreadsheet calculates thermodynamic properties in the superheated region for an absolute pressure range of 0.01-80 MPa, using 30 data tables spread apart over this pressure range. I hope you mastered using your Casio calculator to solve thermodynamics problems, such as obtaining thermodynamic properties by double interpolation Please give this video a thumbs up if it. The calculator uses data points from thermodynamic property tables, and uses linear interpolation to calculate the following six thermodynamic properties: Temperature ( T), pressure ( P), specific volume ( v), energy ( u), enthalpy ( h), and entropy ( s). This calculator is programmed in Microsoft Excel. I created a steam table calculator which makes it easy to calculate the thermodynamic properties of water in the subcooled, saturated, and superheated region.
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