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A Compact, Passive, Cryogenic Cooling Unit for Shipboard Environments

Award Information

Department of Defense
Award ID:
Program Year/Program:
2012 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Sierra Lobo, Inc.
102 Pinnacle Drive Fremont, OH 43420-2448
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2012
Title: A Compact, Passive, Cryogenic Cooling Unit for Shipboard Environments
Agency: DOD
Contract: N00024-12-P-4304
Award Amount: $79,888.00


The Navy has stated a need for a backup cryogenic cooling method for shipboard superconducting systems. The cooling method must be as compact as practical and should operate without consumables even if power is lost for an extended period. Ideally, the backup cooling method should take advantage of the energy associated with a phase change. One known compound has a solid-to-liquid phase transition within the temperature range of interest (at 77 K) and remains a liquid up to and above room temperature. The compound presents no unusual hazards and is commercially available. Despite its apparent promise, the compound has not been previously explored for use in cryogenic applications. Sierra Lobo proposes to develop a backup Cryogenic Cooling Unit (CCU) using the compound. In the CCU, the energy storage medium is completely enclosed, does not need replenishment, and is storable at atmospheric pressure at room temperature. While power is available, helium gas is cooled to cryogenic temperatures by a dedicated cryocooler and circulated through tubes embedded in the energy storage medium. When power is lost, valves switch the flow through the heat exchanger from the dedicated cryocooler to the superconducting equipment"s cooling loop to deliver cooling power.

Principal Investigator:

Philip Putman
Senior Research Scientist
(419) 499-9653

Business Contact:

George Satornino
President and CEO
(419) 499-9653
Small Business Information at Submission:

Sierra Lobo, Inc.
102 Pinnacle Drive Fremont, OH -

EIN/Tax ID: 341759655
Number of Employees:
Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No