SBIR-STTR Award

Compact and Efficient Cooling Coils for Naval Systems
Award last edited on: 11/7/2018

Sponsored Program
SBIR
Awarding Agency
DOD : Navy
Total Award Amount
$556,196
Award Phase
2
Solicitation Topic Code
N091-074
Principal Investigator
John T Kelly

Company Information

Altex Technologies Corporation

135 Nicholson Lane
San Jose, CA 95134
   (408) 328-8300
   john@altextech.com
   www.altextech.com
Location: Single
Congr. District: 17
County: Santa Clara

Phase I

Contract Number: N00014-09-M-0193
Start Date: 5/18/2009    Completed: 3/18/2010
Phase I year
2009
Phase I Amount
$99,949
More compact and efficient cooling coils are needed to address increased heat management loads on Navy systems. Altex has identified an advanced cooling coil approach that can achieve the needed cooling, at half the typical cooling water flow, at face velocities exceeding 1000 fpm, without condensate carryover. Preliminary tests have shown the heat transfer potential of the concept. Under the proposed Phase I project, the concept will be adapted to the Navy cooling coil application of interest; and the performance and cost benefits of the concept will be determined, versus alternative techniques. In support of this assessment effort, a test article will be built and tested. These efforts will show the feasibility of the concept for cooling coil applications of interest.

Benefit:
By implementing the special cooling coil concept, Navy cooling coil heat transfer requirements will be met with half the typical cooling water flow at face velocities over 1000 fpm. Furthermore, this will be achieved at volume, weight and cost reductions of 40%, 50% and 35%, respectively. Importantly, the concept could be beneficially applied to other military, as well as civilian heat exchanger applications. Specifically, if the concept was applied to household heating and air conditioning applications, electricity cost, energy and CO2 savings would be $7.7 billion, 0.26 Quads and 70 million tons per year.

Keywords:
Heating, Heating, Ventilation, cooling coils, Air Conditioning, Thermal Management

Phase II

Contract Number: N00014-10-C-0325
Start Date: 7/22/2010    Completed: 9/21/2012
Phase II year
2010
Phase II Amount
$456,247
More compact, lightweight and efficient cooling coils are needed to address increased heat management needs on Navy ships. Under a Phase I effort, Altex has tested and shown the feasibility of an advanced cooling coil concept that can achieve the required cooling at half the typical cooling water flow, and at face velocities above 1000fpm without condensate carryover. Importantly, this good performance is achieved at 70% less volume and 72% less weight than current Navy cooling coils, as well as at a lower cost. Given the good results to date, a Phase II effort is proposed to develop and manufacture prototype versions of the concept and test them at two scales over a range of design and operating conditions to prove the performance under simulated field conditions. In addition, analysis and test data will be used to demonstrate the scalability of the design. Following success with these efforts, the design will be refined to a preproduction level and the cooling coil tested in the field on a ship under operational conditions. These activities will ready the concept for commercialization and deployment under subsequent efforts.

Keywords:
Lightweight, Lightweight, Cooling Coils, Heating, Heat Exchangers, Air Conditioning, Condensate, Efficient, Compact