Any suggestions about setting an old conventional HVAC system (for tall building in hot climates)?

edit

This is in connection with my other question here

Doing a research project on tall buildings in hot climates (tropical desert e.g. Dubai), I am going to simulate two HVAC systems to represent old and current conditions. The research is not focused on HVAC systems but defining and simulating two "conventional" systems are inevitable: one for the past (decades ago, when windows with single pane glass where common) and one for present time.

For present scenario I'm using FCU+DOAS...

My question here is about the past scenario: Which HVAC systems where most common for tall buildings in the past? Any information about setting related parameters would also be helpful e.g. cooling COP, airsideeconomizer, thermostats common values, min and max indoor humidity, etc.

Thanks

Software: Grasshopper/Honeybee/OpenStudio/EnergyPlus