We made an environmental information system for occupants of buildings to reduce cooling/heating load. We focused on the aim of function is calculation data provide them to know whether they can use natural ventilation or not. It is called “recommendation mode for air-conditioning”. The system is collecting the data from HVAC on the BAC-net (TCP/IP) by using web server (Windows IIS, DB: SQL) and provides occupants to know the mode using their PC monitor in real time.
