Advanced Power Density Improvements to Electrical Generation Systems
Navy STTR 2019.A - Topic N19A-T013
NAVSEA - Mr. Dean Putnam - firstname.lastname@example.org
Opens: January 8, 2019 - Closes: February 6, 2019 (8:00 PM ET)
ACQUISITION PROGRAM: PMS 320 (Electric
Ships Office) and the Power and Energy FNC Pillar
OBJECTIVE: Develop innovative
technology improvements to propulsion and power generation prime movers through
increased power density and improved fuel efficiency.
DESCRIPTION: Some current
commercial applications perform waste heat recovery primarily from the exhaust
gases of the prime movers. Typical gas turbine exhaust temperatures are 800° F
and higher. Diesel engine exhaust temperatures can be 700° F and higher.
Industrial gas turbines have achieved efficiencies up to 60% when waste heat
from the gas turbine is recovered in a combined cycle configuration. Although
waste heat recovery systems are commonly used in industrial power generation,
the highly transient operation of U.S. Navy engines and the stringent
requirements applied to the gas exhaust introduce significant technical
challenges to heat exchanger durability, caused by the resultant high
thermo-mechanical stresses (fatigue and material failure). As such, this STTR
topic seeks methods to recover energy from sources as low as 200° F and below
(e.g., jacket water) so that heat exchangers do not experience thermal cycling
PHASE I: Develop a conceptual
design for a power dense waste heat recovery system for application to naval
ships. Discuss the salient features of the performance as well as the physical
and functional characteristics of the proposed system(s). Using best practices,
develop thermodynamic models to predict system performance and provide
justification for the model assumptions. Use the results from the modeling
study to assess the ability of the proposed solution to meet the performance
goals and metrics. Develop a Phase II plan. The Phase I Option, if exercised,
will outline the specifications and capabilities to build the prototype in
PHASE II: Develop, fabricate,
deliver, and demonstrate a reduced scale prototype of the module as identified
in the Description with a power level of at least 10 kW. Demonstrate the same
technology that can support full-scale operation for shipboard power generation.
In a laboratory environment, demonstrate through test and validation that the
prototype meets the performance goals established in Phase I. Perform all
analyses and effort required to refine the prototype into a useful technology
for the Navy. Provide detailed drawings and specifications, document the final
product in a drawing package, and develop a Phase III installation plan.
PHASE III DUAL USE
APPLICATIONS: Working with the Government, conduct detailed design and
fabrication of a shipboard module to provide to the Navy for qualification and
other testing as required by the fleet technical authorities in preparation for
a shipboard installation. Transition opportunities for this technology include
commercial ship and offshore systems that could benefit from reduced volume of
mechanical equipment and increased system efficiencies.
1. “The 2015 Naval Power and
Energy Systems Technology Development Roadmap.”
2. Markle, Stephen P., PE
“Surface Navy Electrical Leap Forward.” Sea-Air-Space Exposition Presentation
1.1. 03 April 2017.
3. “Waste Heat Recovery:
Technology and Opportunities in U. S. Industry.” BCS, Incorporated, U.S.
Department of Energy, Industrial Technologies Program, March 2008.
4. Gibson, S., Young, D., and
Bandhauer, T. M. “Technoeconomic Optimization of Turbocompression Cooling
Systems.” Paper IMECE2017-70934, ASME International Mechanical Engineering
Congress and Exposition, Tampa, FL, 2017. http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2669116
5. Yuksek, Errol L. and
Mirmobin, Parsa. “Waste Heat Utilization Of Main Propulsion Engine Jacket Water
In Marine Application.” ASME 2015, 3rd International Seminar on ORC Power
Systems, Brussels, Belgium, October 2015.
6. MIL-DTL-901E, Detail
Specification, Shock Tests, H.I. (High-Impact) Shipboard Machinery, Equipment,
and Systems, Requirements for.
7. MIL-STD-167, Fiber Optic
Cabling Systems Requirements and Measurements.
KEYWORDS: Supercritical CO2;
Heat Exchanger; Energy Recovery in Electrical Generators; Waste Heat Recovery;
Thermal Efficiency; Jacket Water