COP and SFP values for energy modelling

(for a office building in Sao Paulo) COP: For an office building in Sao Paulo, the proposed case uses air cooled system with a COP value of 2.87. The base case calculation from table G3.1.3.7 and table 6.8.1C of the 90.1 standard gives us a COP of 5.50 (i.e. assumes a water cooled chiller). Does that sound correct ? Is there a case that the baseline building utilises an air cooled chiller of a COP of 2.8 for the purposes of the baseline assessment? Or is there any other way of calculating the COP of the base case except complying to the above mentioned ASHRAE tables? SFP (Specific Fan Power): We got a supply (and extract) flow rate of 60,142 L/s for our building ( calculated from the equation). With the power consumption of fan blower at 108 kW, we get a SFP for supply of 1.80W/l/s. The same applies for the extract fan – i.e. SFP of 1.8W//s. This totals to a combined supply and extract SFP of 3.6 W/l/s, which is significantly higher than the maximum permissible standards that we generally in the UK – i.e. limiting combined SFP value of 2.4 or less) Can anyone advise on this ? Thanks