Laboratory Cleanroom Facility

The main objectives of this Analytika program were to achieve energy cost reduction, reduce carbon emissions, improve efficiency, increase reliability, support compliance reporting, enhance preventative maintenance, prioritize O&M efforts, and improve comfort while maintaining environmental safety ventilation requirements.

The LCF is a 130,000 square foot state-of-the-art nanotechnology research facility that houses class-10, class-100, and class-1,000 cleanrooms, offices and classrooms.

The Solution

Analytika AFDD (Automated Fault Detection and CO2 Diagnostics) continuously analyzed over 4,500 BAS points from the facility’s Air Handling Units, Chilled Water and Hot Water Pumps, Steam-to-Hot Water Heat Exchangers, terminal units, System Control Valves, Recirculating Air Handling Units, and Fan Coil Units. Experienced Cimetrics engineers leveraged Analytika to identify opportunities, determine root cause, and calculate annual savings impact.

Actionable recommendations were documented and provided via the online Analytika Portal. The Analytika team worked closely with the client team to implement, track and verify the changes, improvements and savings.

SIMULTANEOUSHEATING AND COOLING

A group of clean rooms require precise temperature and relative humidity control. The clean room zone temperatures are maintained at 68F by zone air handlers with cooling coils. Outdoor air is provided by alarger AHU that cools the air to 45F for dehumidification. Reheat coils reheat the air before it is mixed with the clean room return air and sent to terminal fan coil units. Prior to Analytika, the reheat coils discharge constant 70F, even though the zone FCU’s were cooling to 65F to maintain the zone temperature setpoint.This resulted in excess energy use as the air was overheated and then cooled again. Analytika identified the opportunity and recommended to reset the AHU supply air temperature during periods when outdoor air is dry and dehumidification is not required, and that the reheat coils be controlled based off of the heating and cooling demand of the clean rooms. The controls sequence were revised andsimultaneous heating and cooling was reduced, saving $180,601 in energy annually.