Figure 1is a graph

Figure 1is a graph of the energy cost data for the model kitchen described above in the three climate zones studied at all fractions of transfer air to exhaust airflow rates. Assumed average energy rates were used to demonstrate the energy cost relationships of the same system in different climates which is irrespective of the energy rate used. The highest energy costs are associated with 0% transfer air represent conditioning 100% of the exhaust replacement air. This is the type of system design this measure attempts to minimize. As the amount of transfer air is increased, the associated costs to condition excessive amounts of outside air are reduced.