Sizing of Room Air-Conditioners for Minimum Energy Consumption and Peak Power

Important oversizing factors are observed for room air-conditioners leading to important energy wastes and costly summer peak demands for utilities. This article intends to show that sizing decisions should be based on dynamic simulation results and include an assessment of the air conditioner part-load performance. The sizing methodology established is applied to evaluate different oversizing levels for different types of buildings, climates and systems. This enables to compare our methodology to typical rules of the thumbs applied in France.

The energy penalty of poor duct design.

A home with a poor duct system can't be energy efficient no matter how tight or well-insulated it is.