Said Azarbaijani - P.h.D.۱P.E. Tehran Regional Electric Company Tehran , Iran

A bond graph model for energy flow in the ideal dwellings is presented . This model has been used to numerically simulate the thermal behavior of an ideal tract home subject to both single thermostat and multiple thermostat zone control . Several simulations have been run,each with a different number of controlled zones t o evaluate possible energy savings of retrofit zone control . In al 1 cases , multiple thermostat control resulted in an energy savings. The largest savings , 32% occured in the two thermostat case.