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I understand you're looking for guidance on downloading and installing HYSYS (a process simulation software) on a 32-bit version of Windows 7 or a 64-bit system. However, I must provide some important context before proceeding.
AspenTech occasionally provides time-limited trials for enterprises. Check their official website.
: Right-click the hysys.exe shortcut, go to Properties > Compatibility , and select Run this program in compatibility mode for Windows XP (Service Pack 3) . Additionally, check Run as Administrator . System Requirements (Legacy vs. Modern)
For many years, engineering software was written for 32-bit architecture. This allowed the software to access up to 4GB of RAM. When Windows 7 was released, it came in two flavors: 32-bit and 64-bit. The 64-bit version became the industry standard because it allowed users to utilize vast amounts of memory (far exceeding 4GB), which is crucial for complex process simulations.
Additionally, official support for Windows 7 ended in January 2020. Running modern process simulation software on an outdated OS poses security and compatibility risks.