How do you interpolate a table in Excel?
To perform linear interpolation in Excel, use the FORECAST function to interpolate between two pairs of x- and y-values directly. This simple method works when there are only two pairs of x- and y-values. If there are more than 2 pairs, the calculation is more complex.
What is interpolation method in thermodynamics?
Description. Linear interpolation is a way to fill in the “holes” in tables. As an example, if you want to find the saturated pressure of water at a temperature of 40 C you can look in Table B. You could of course just ignore the difference between 38 C and 40 C, and still take the saturated pressure to be 7.384 kPa.
How do you do 2d interpolation in Excel?
INTERPXY is a versatile 2D interpolation function based on splines. Use INTERPXY to interpolate from a set of (x,y) data points at an arbitrary point. Use INTERPXY to map a scattered (x,y) data points onto a uniform grid for easy plotting in Excel….Optional Inputs.
| Key | SFACTOR |
|---|---|
| Default Value | 0 |
How do you calculate interpolation?
Know the formula for the linear interpolation process. The formula is y = y1 + ((x – x1) / (x2 – x1)) * (y2 – y1), where x is the known value, y is the unknown value, x1 and y1 are the coordinates that are below the known x value, and x2 and y2 are the coordinates that are above the x value.
How do you calculate interpolation value?
The interpolation formula can be used to find the missing value. However, by drawing a straight line through two points on a curve, the value at other points on the curve can be approximated. In the formula for interpolation, x-sub1 and y-sub1 represent the first set of data points of the values observed.
What are the properties of steam in Excel?
Steam Property Tables (Excel Version): 1 Saturation Properties – Temperature Table 2 Saturation Properties – Pressure Table 3 Superheated Vapor Properties 4 Compressed Liquid Water Properties More
Which is the Industrial Formulation for steam tables?
The library uses new industrial formulation for steam tables, called “IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam (IAPWS-IF97)”, and replaces the previous industrial formulation for steam tables, IFC-67. IAPWS-IF97 improves significantly both accuracy and speed of the calculation
How to use steam tables in steam97 Excel?
The following screenshots demonstrate how to use the library, it’s a 4 step process. 1. (a) Start Excel and press the “Insert Function” toolbar button. 1. (b) Alternatively, start Excel and press the “Insert Function” menu item. 2. Select a Steam97 library (SI or English units). 3. Select a function and press the OK button. 4.
How does iapws-if97 improve speed of thermodynamic calculations?
IAPWS-IF97 improves significantly both accuracy and speed of the calculation of the thermodynamic properties compared with the old formulation. For transport properties calculations are based on the latest internationally accepted equations also available from IAPWS.