Evaluation of AHU1Fresh Air Supply on a Bank Building
Job Description: Evaluation of AHU1Fresh Air Supply on a Bank Building
Area: St James Street, London
Investigation Works Summary:
The report evaluated the performance of supply air ventilation system AHU 1. Measurements were taken on the second floor and in the plantroom.
The AHU appeared to be operating correctly and delivering a total supply air volume of 0.695 m3 /s with a second-floor total of 0.374 m3 /s.
The remaining floors were estimated as follows; third floor 0.218 m3 /s, plaza level 0.069 m3 / s and ground floor 0.034 m3 / s.
Generally, the system appeared to provide sufficient fresh air to the areas served based on an occupancy rate of 1 person per 10m2
It appeared that ductwork modifications (removing dampers and adding a larger branch) to the second floor had enabled more air to the floor.
The recommendations included remedial and cleaning works to the AHU, and it was reported that the unit maybe be nearing the end of its useful life.
It was also recommended to check a typical fan coil unit on the 3rd floor to prove that system dampers are open, and air is actually being delivered to the floor.
