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Chrysler Cuts Cooling Costs 28%, Earns $200,000 Utility Rebate
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Facility Bio
- Auburn Hills, MI
- 5.3 million ft2 corporate R&D, and data center space
- Offices for 13,000 employees
- Fourteen (14) chillers totaling 17,640 tons capacity
- 24/7/365 critical operations
![](https://www.tekworx.us/wp-content/uploads/2020/03/Case-Study-Icons-08.png)
Situation
- Outdated controls required continuous manual oversight
- All CHW flow in/out of (2) 3-million-gallon storage tanks
- Constant speed primary pumps with balance valves
- Secondary pump VFDs improperly controlled
- More chillers often running than necessary
- Low CHW ΔT, high kW/ton
![](https://www.tekworx.us/wp-content/uploads/2020/03/Case-Study-Icons-15.png)
Solution
- Convert chilled water loop to full variable flow
- Implement redundant PLC and adaptive Control Engine Optimization (CEO®) solution
- Integrate CEO® with existing site BAS to facilitate remote access
- Utilize storage tanks to minimize energy
- VFDs on pumps and towers only when justified by payback
Results That Exceed Client Expectations
![](https://www.tekworx.us/wp-content/uploads/2020/03/Case-Study-Icons-13-1.png)
Financial Savings
- $200,000 DTE Energy rebate, maximum incentive
- 28% reduction in annual energy costs
- 1.7-year payback
![](https://www.tekworx.us/wp-content/uploads/2020/03/Case-Study-Icons-12-2.png)
Energy Impact
- 12,130,000 kWh saved annually
- .35 kW/ton efficiency improvement
![](https://www.tekworx.us/wp-content/uploads/2020/03/Case-Study-Icons-16.png)
Operational Benefits
- Improved reliability of operations
- Minimized operator oversight
- Pumps running in eye of efficiency curve reduces maintenance
- Remote access provides:
- Improved performance monitoring & verification
- Reduce trouble shooting and response time
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