AirBoss

System

95 Ambient
Tonnage # of Units Airflow MBh SHC EAT LAT
25 5 9000 283.70 185.16 77/67 58/57
20 3 7200 248.20 162.50 77/67 57/57
   
Total  185 8 66600 2163.10 1413.30


Table 3. AirBoss System equipment list and performance.

From the table, the 25 and 20-ton units are running 360 CFM/ton.  This allows the AirBoss system to supply the required 66,000 CFM with a 58° evaporator leaving temperature.  Since the AirBoss units are constantly de-stratifying the air, the return temperature back to the RTU’s is less.  This allows the design engineer to reduce the amount of compressor capacity required. An airflow simulation showing the space profile is shown in Figure 9.  The simulation video is labeled A84.avi.  

Figure 9. Space thermal profile with AirBoss System.

During design day, the simulation calculated that the RTU’s must run for 16 min to satisfy the space.  This increased runtime in addition with the AirBoss units running continuously; the kW/hr is calculated to be 51.80.  This is a ~6% increase in energy usage compared to the conventional system. The energy analysis is shown in Table 4

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