30 % Surplus OA: Does It Use More Energy?" />      30 % Surplus OA: Does It Use More Energy?" /> ASHRAE Journal - June 2009 - <font size="14" style="font-size: 14px;"><i>     </i><font size="12" style="font-size: 12px;"><i>30 % Surplus OA: Does It Use More Energy?</i></font></font>