AIR HANDLING UNIT(AHU)
The VTS modular air handling units meet the highest energy-efficiency requirements. The maximum recovery efficiency reaches 87%.All units are available with multi-functional controls that performs advanced energy-saving functions based on measurements of air quality parameters. Controls in the VTS air handling units regulates all utility parameters and functions of energy optimisation based on the measurement of air quality parameters. Air Filtration: The AHU must be an air purification unit and air filtration unit. There must be two sets of washable flange type pre filters of capacity 10 microns and 5 microns with aluminum/ SS 304 frame within the AHU. The necessary service panels to be provided for servicing the filters, motors &blowers. HEPA filters of efficiency 99.97% down to 0.3 microns or higher efficiency are to be provided in the OT and not in the AHU. Minimum total air changes should be 30 based on international guidelines although the same will vary with biological load and the location. There is a requirement to maintain positive pressure differential between OT and adjoining areas to prevent outside air entry into OT. The minimum positive pressure recommended is 15 Pascal (0.05 inches of water) as per ISO 14644 Clean Room Standard The temperature should be maintained at 21 +/- 3 Deg C inside the OT all the time with corresponding relative humidity between 40 to 60% though the ideal Rh is considered to be 55%. Appropriate devices to monitor and display these conditions inside the OT may be installed
