SecCool is a package of programs consisting of three parts:

• SecCool Properties. Program with user interface, allowing to calculate fluid properties with different concentrations, calculating friction and pressure drops in secondary side piping systems, and comparing different fluids.
• SecCool Datafit. Program for adding new secondary refrigerants to the package
• SecCool API. Two Windows 32-bit and 64-bit DLLs which can be used in your own programs, one DLL specifically for EES (Engineering Equation Solver, by F-Chart Software), and one general-purpose DLL.

The SecCool package is developed as part of the project DESIK (Energirigtig design og regulering af sekundærsiden på indirekte køleanlæg med naturlige kølemidler) financed by ELFORSK R&D (#334-001). The project period was from 2003-04-01 to 2005-12-31. Maintenance and hosting of the project since then has been done by IPU.

In most cases, the 64-bit version of SecCool is the standard choice, which requires 64-bit Windows, and allows integration with 64-bit software such as Excel, Matlab, EES64 etc.

• Download SecCool v2.1.0 for 64-bit (x64)

If you have a 32-bit Windows computer, or need to integrate SecCool with 32-bit software such as EES32, you can install the 32-bit version side-by-side:

• Download SecCool v2.1.0 for 32-bit (x86)

v2.1.0 (November 12th, 2025)

• Introduced information on HT-1, HT-2, HTX1 and HTX2 certification of specific fluids.
• Mark one fluid as discontinued.
• Update CRANE Temper data.

v2.0.2 (June 17th, 2024)

• Bug fix for 64-bit version calculating at high Reynolds numbers

v2.0 (May 2024)

• Introduced support for 64-bit Windows programs.
• New fluid data for CRANE Temper, replacing earlier ASPEN Temper data.
• Updates for compatibility with current EES versions (32-bit and 64-bit).

v1.3.3 (2007)

• First public version, available on request

…with feedback

For maintaining and improving the product, your feedback as a user is very important to us.

• User feedback (ipu.freshdesk.com)

…with data

If you are missing specific fluids, or are a manufacturer and would like your fluid data to be included in a new SecCool version, please get in touch. We can both assist with generating fluid files, or verify and include fluid files generated by yourselves with the SecCool Datafit tool.