New Generation of Software: Modeling of Energy Demands for Residential Ventilation with HTML Interface

The paper presents an interactive on-line package for calculation of energy and cost demands for residential infiltration and ventilation, with input and output data entry through a web browser. This is a unique tool. It represents a new kind of approach to developing software employing user (client) and server (package provider) computers. The main program, servicing "intelligent" CGI (Common Gateway Interface) calls, resides on the server and dynamically handles the whole package performance and the procedure of calculations. The "computing engine" consists of two parts: RESVENT — the previously existing program for ventilation calculations and ECONOMICS — for heating and cooling system energy and cost calculations. The user interface is designed in such a way, that it allows simultaneous access by many users from all over the world.