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Microsoft patents data center cooling that stores heat for later release

Microsoft describes a cooling system for data centers that uses a thermal energy storage device connected to a heat exchanger. This setup allows the system to capture heat from the air and store it, rather than immediately expelling it, to manage temperature more efficiently.

Why it mattersThis approach could help data centers reduce energy costs by shifting cooling loads to times when electricity is cheaper or less in demand.

In the filing’s own words

A device may include an air handling unit (AHU) including: an inlet, and an outlet, wherein the inlet and outlet define an airflow channel of the AHU. A device may include a heat exchanger positioned in the airflow channel. A device may include a thermal energy storage (TES) device in thermal communication with the heat exchanger.

What exactly they claim (claim 1)

1. A device comprising: an air handling unit (AHU) including: an inlet, and an outlet, wherein the inlet and outlet define an airflow channel of the AHU; a heat exchanger positioned in the airflow channel; and a thermal energy storage (TES) device in thermal communication with the heat exchanger.

Facts

Company
Microsoft (Microsoft Technology Licensing, LLC)
Official title
SYSTEMS AND METHODS FOR DATACENTER THERMAL MANAGEMENT
Publication number
US20260282294A1
Application number
19081336
Filed
Mar 17, 2025
Published
Sep 17, 2026
Inventors
3
Claims
20

Classified under

H05K 7/20827 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.