This paper describes how the automation team at ENI Green Data Center (GDC) solved the problem of controlling the temperature inside a data room that can be air cooled both with direct free-cooling and with water-based chillers and heat exchangers using a sliding mode control design. They created an algorithm which provided: 1. a directional, incremental “walking ” function to seek out and test alternative solutions, biased toward a preferred solution, 2. stabilization on an optimized solution, 3. a destabilization function to retest the solution periodically without allowing jitter, and 4. a method of changing preference to autonomously re-optimize for another configuration.
Bortot, Luca; Nardelli, Walter; Seto, Peter
Technologies
Cooling & Air Management
Monitoring and Controls
Environmental Conditions
Focus areas
High Performance Computing (HPC)