A comparison of alternative ventilation strategies.

Examines several ventilation strategies in tight houses for both impact on the total ventilation and effect on the energy balance of the system. Uses the single-zone infiltration model developed at LBL as part of the calculation of total ventilation load. Strategies covered include natural systems such as ventilation stacks as well as mechanical systems such such as air-to-air heat exchangers and exhaust fans with and without heat pumps. Concludes that the best ventilation strategy for a building depends on the envelope leakage, the balanced systems being favoured in tighter structures and the unbalanced systems in looser structures.