Free cooling system for low ambient temperatures
AssigneeTrane International Inc.
InventorsWilliam B. Fox, Jacob L. Gregg, Robert J. Larrinaga, Todd Duncan, Daryl Keys
Life of this patent
Estimating the term…
Abstract
A free cooling system includes a circulation path including a pump and one or more heaters. The free cooling system can further include an isolation valve to isolate the circulation path from an active free cooling circulation path. The pump is configured to circulate a process fluid when the free cooling system is deactivated, and the one or more heaters are configured to add heat to the process fluid in the circulation path such that the process fluid remains above a freezing temperature of said process fluid.
Claims13
A free cooling system, comprising a circulation path, the circulation path comprising one or more outdoor heat exchangers of the free cooling system, a pump, and one or more heaters, the pump and the one or more heaters configured to operate when the free cooling system is deactivated.
A method of operating a free cooling system, comprising:
- when the free cooling system is in a deactivated state, circulating at least some of a process fluid of the free cooling system through a circulation path including one or more outdoor heat exchangers of the free cooling system, a pump, and one or more heaters, and
- operating the one or more heaters to heat said at least some of the process fluid.
Dependencies are inferred from the claim text.