ipsengiu

ipseng iu's Freeware Webpage

A webpage to share my programming work and collections, free.

A java program to calculate HSPF (Heating Seasonal Performance Factor). It has options to calculate HSPF for single-speed, two-speed, and variable-speed compressor systems.

A java program to calculate SEER (Seasonal Energy Efficiency Ratio). It has options to calculate SEER for single-speed, two-speed, and variable-speed compressor systems.

Another java program for psychrometric calculations. It supports both SI and IP units.

My first Java program to perform unit conversions. Conversion options are customizable.

An Excel (VBA) program that implements the golden section method. It is a one-dimensional search method that finds the minimum of a function requiring no derivative information. You can specify the function in this program.

An Excel (VBA) program that implements the Newton method. It is a one-dimensional search method that finds the minimum of a function. You can specify the function to search. The 1st and 2nd derivatives are required.

My first Visual Basic program. It calculates periodic response factor (PRF), conduction transfer function (CTF), and radiant time factor (RTF). They are particular useful in building load calculations.

An Excel (VBA) program that implements the simplex method. It is a multi-dimensional search method that finds the minimum of a function without using any gradient information. The simplex method is not as efficient as the steepest descent Method but is more robust. A two-dimensional function is used as an example to demonstrate the code. You can replace the function per your need.

An Excel (VBA) program that implements the steepest descent method. It is a multi-dimensional search method that finds the minimum of a function in the steepest descent searching direction. In each searching direction, the Cubic method is used to find the optimal value. You can also replace the Cubic method with the Golden Section or Netwon method programs that are available in the web page. A two-dimensional function is used as an example to demonstrate the code. You can replace the function per your need.