# Cooling Pods, Dry Coolers & Heat Rejection

Source: https://savrn.com/institute/courses/mec-2602
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Advanced · MEC

Proposed course specification. Delivery, enrollment, and assessment arrangements require a partner program. Credential references describe intended alignment or pathways; external credentials and academic awards are issued only by the responsible organizations.

96Total hours

32Lecture

64Hands-on lab

MEC 2601Prerequisite

—Proposed credential / alignment

64 lab hours 32 lecture hours

This course covers modular cooling pods, dry coolers, and the outdoor heat-rejection equipment that completes a liquid-cooled data-center thermal chain once heat has been carried out of the rack by a CDU or rear-door heat exchanger. Students learn L2A sidecar CDU pod commissioning, dry-cooler fan and free-cooling economizer control, seasonal changeover between free-cooling and mechanical assist, and outdoor equipment maintenance in weather-exposed conditions. The course extends the CDU and rear-door competencies from Liquid Cooling to the pod and building-perimeter equipment, including glycol freeze-protection concentration verification for climates with sustained sub-freezing temperatures. Students perform pod commissioning, dry-cooler fan and coil inspection, and freeze-protection fluid testing, treating outdoor electrical disconnects and elevated-work access as safety-critical competencies consistent with the electrical and fall-protection frameworks established earlier in the program.

## What you'll be able to do

1. Diagram the outdoor heat-rejection path from an L2A sidecar CDU or rear-door loop through the dry cooler to ambient air, identifying free-cooling and mechanical-assist operating modes.
2. Commission an L2A sidecar CDU pod, verifying flow, pressure, and heat-exchanger approach temperature against manufacturer acceptance criteria. Safety-critical
3. Verify glycol freeze-protection concentration in an outdoor dry-cooler loop and adjust to the manufacturer's minimum concentration for the site's design low temperature.
4. Lock out an outdoor dry-cooler fan array and electrical disconnect before performing simulated fan or coil maintenance. Safety-critical
5. Inspect and clean dry-cooler coils and verify fan operation, including vibration and current-draw checks against manufacturer baseline.
6. Use fall-protection equipment correctly when accessing an elevated dry-cooler or rooftop pod platform. Safety-critical
7. Determine the correct seasonal changeover point between free-cooling and mechanical-assist mode using outdoor air temperature and facility load data.
8. Document a pod commissioning, glycol test, or dry-cooler maintenance event in the outdoor equipment maintenance log.
9. Escalate an under-concentration glycol finding, an out-of-tolerance approach temperature, or a fan vibration/current anomaly to the responsible facility engineer. Safety-critical
10. Participate in a supervised live-site seasonal changeover observation under an employer field-placement or Campus Node arrangement.

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Liquid Cooling — Direct-to-Chip & Rear-Door

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Physical Security for Data Centers

### Department

Mechanical Systems & Thermal Management

4 courses · 480 hours →

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