High Power Density Turbine Based
Generation Systems
NDIA
Joint Service Power Expo
Myrtle Beach, SC
02-05 May 2011
Presented by:
Hernando Munevar Candent Technologies, Inc.
6701 W. Airport Blvd, Ste 190
Greenfield, Indiana 46140
317-336-4477 /4478
UNCLASSIFIED
3
About Candent Technologies: A lean, experienced, and expert team of
technical, program management, and business development personnel.
Each member has 20 or more years experience in the design, development,
qualification/certification, management, production and support of all types of gas
turbines, but particularly small and low cost turbine engine systems, having been
involved in the design and/or development of more than a dozen successful engines.
Sampling of Candent Team’s Engine Experience
Model 250
T800
Under Armor APU
for the M1A2 Tank Low Cost Expendable
Engines for Missiles and
UAV’s
GP7200
Low Cost - High Performance
Turbojet designed and on
test in 22 weeks
Allison Model 150
T406/AE1107/2100
T56/501
Strong background and knowledge base including small engines
4
About Candent Technologies
• Who we are: A lean, highly experienced, and expert gas turbine engine team, based
in Mt Comfort, Indiana
• What we are doing: Presently developing high efficiency, low cost, small gas
turbine engines, for military and civil power generation and propulsion systems
– Simple Brayton Cycle systems from 350 kW to 2,250 kW in size
– Specific fuel consumption 20-35% better than state of the art small turbine
engines (<1,000 kW size) and competitive with similar size diesels
– Microturbine systems, recuperated and simple cycle, from 10 kW up to 350 kW
• Current DOE Projects: Phase II SBIR program, started September 2011, to
design and test critical components for an advanced technology, high efficiency, low
cost gas turbine powered genset
– Simple cycle system with a Rankine “Bottoming Cycle” steam system to recover
exhaust waste energy
– Turbine shaft direct drive, high speed generators
– Capable of producing 1,500 kW
– High thermal efficiency goal set at 50%
• Current DOD Projects: Navy (NSWC-CD) Phase I SBIR program to define a main
gas turbine exhaust waste heat recovery system, started March 2011
Using available and proven technology – no inventions required
5
Candent Technologies Technical Capability
State of the art system and component design and analysis capabilities
Sea Level Test Cell Facility
Secondary Flow and
Heat Transfer
Static and Dynamic
Structural Analysis
No restriction – wide
open channel.
C = .003” with 5 tooth seal
Ps = 44.1 psi
.40% Wcore
(71% purge)
.28% Wcore
(71% purge)
Ps = 63.5 psi
C = .006” with 1/16” cell honeycomb
Ps = 42.8 psi
Ps = 62.6 psi
Radial overlaps with
.010” clearance.
C = .004” with
1/16” cell
honeycomb
.26% Wcore
Ps = 44.5 psi
Restrict flow area to
.037 in2 -- 6 holes @
.089”D.
No restriction – wide
open channel.
C = .003” with 5 tooth seal
Ps = 44.1 psi
.40% Wcore
(71% purge)
.28% Wcore
(71% purge)
Ps = 63.5 psi
C = .006” with 1/16” cell honeycomb
Ps = 42.8 psi
Ps = 62.6 psi
Radial overlaps with
.010” clearance.
C = .004” with
1/16” cell
honeycomb
.26% Wcore
Ps = 44.5 psi
Restrict flow area to
.037 in2 -- 6 holes @
.089”D.
HPC Rotor Blade – Freq 5 12900 HzHPC Rotor Blade – Freq 5 12900 Hz
Aerodynamic Design
and CFD Analysis High Speed Shaft Dynamics
T4 = 1800oF
SHP/Wa
T4 = 2000oF T4 = 2500oF T4 = 3000oF
Rc = 20
Rc = 15
Rc = 10
Rc = 30
100 200 300
.50
.45
.40
.35
.30
SF
C (
lb/h
p-h
r)
T4 = 1800oF
SHP/Wa
T4 = 2000oF T4 = 2500oF T4 = 3000oF
Rc = 20
Rc = 15
Rc = 10
Rc = 30
100 200 300100 200 300
.50
.45
.40
.35
.30
SF
C (
lb/h
p-h
r)
.50
.45
.40
.35
.30
SF
C (
lb/h
p-h
r)
1
2
3
4
5
6
7
1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50
PR
LP
Compressor
Design Point
70%
100%
95%
90%
80%
45%60%
Design surge
line
Corrected Flow (lbs/sec)
Gas Turbine Performance,
PD, Detail Design and CAD
Modeling Capability
1 inch
Simplified HP Rotor Configuration
Rotor Mode #1
Rigid Whirl Mode
Rotor Mode #2
Pitch Mode of Disks
Neutral
(Un-deflected)
Shape
Deflected
Mode
ShapeRotor Mode #3
Shaft Bend Mode
OD .8 “ / ID .2 “
3 “ span 2 “ distance
7
Increased Deployment of Modern Warfare Systems
Will Require More Power Generation Capability
• The sophistication of current and future weapon systems will continue
to increase the requirements for electrical power
– Individual Warfighter size
– Tactical force size/land vehicle/tactical naval craft mounted
– Base size/large vehicle/naval vessel
• While modern systems are more efficient, they are more numerous
• Logistics support for power generation systems is also increasing
– Fuel Stocks Inventories
– Transportation
– Maintenance
• Power generation design continuously driven to
– Higher Power density
– Improved Mobility
– Higher Efficiency
– Higher Reliability
– Improved Maintainability
– Lower Cost
More high power density generation needed by deployed units
8
Turbines Provide Very High Power Density
Efficiently and at Cost Effective Rates
• Gas turbine specific power is much higher than similarly power rated
reciprocating engines
– Lighter overall system weight by an order of magnitude
– Smaller volume by factor of at least 4 to 5 vs. piston engine genset
• Candent advanced technology gas turbine has fuel efficiency
comparable to diesels of same power
• High speed generators at turbine output shaft speed eliminate need
for heavy gearboxes, minimize system complexity
• Multi-fuel capability of gas turbines easily allows great flexibility in
use of available fuels, i.e. diesel, jet, kerosene, bio fuel, natural gas,
propane, methane, etc.
• Gas turbine MTBO much longer than piston engine gensets, typically
in excess of 20,000 hr
• Gas turbine has lower life cycle cost than comparable piston engine – Significantly less scheduled and unscheduled maintenance
– Longer MTBO
– Similar acquisition cost as diesels
Advanced Technology Gas Turbines Offer Viable Solution
11
Candent Advanced Technology Impact
• Larger gensets, 350kW-2.0MW would also greatly benefit from
Candent’s advanced technology gas turbines
– High pressure ratio provides higher efficiency
– Fuel burn comparable to similar power rated diesels
– Inherently more reliable
– High power density minimizes weight and size, provides highly
enhanced mobility
– Longer MTBO than diesels, by at least 100%
– Lower Scheduled and Unscheduled maintenance
• Candent is developing more efficient gas turbine under DoE
sponsorship
– Engine core testing scheduled for 1Q12
– System thermal efficiency goal is 50%
• Larger gas turbines use state of the art technology hot section
airfoil and cooling designs, achieve competitive fuel burn
Candent’s advanced technology enables genset high power
density with competitive fuel consumption and system costs
12
Candent Comparison versus Current Technology
15
20
25
30
35
40
45
0 1 2 3 4 5 6 7 8 9 10
Power Rating (MW)
Eff
icie
ncy- %
S1A-02
1T-02
TURMO III
ZA-01
ST6-72
VT600
SATURN 20ST6-79
ST6-81
OP-16
ST6-90MAKILA T1
FGT2
SB15
GT2500 TF40
CENTAUR 40
501KBSCENTAUR 50
Typhoon 5.3
ST18ST30
ST40
Mercury 50
ST50
LM500
OR 990
PGT5
TYPHOON M
B30C
THM1203
501KB7
M7A-01
M7A-02
TornadoGT6001
AGT6000
Taurus 70
601KB9
SB5
Tempest
THM1204
Mars 90
SB30E
PGT 10
ASE120
SPW14
Candent Demo
Candent Adv
Technology
Therm
al E
ffic
iency (
%)
Power Rating (MW)
15
20
25
30
35
40
45
0 1 2 3 4 5 6 7 8 9 10
Power Rating (MW)
Eff
icie
ncy- %
S1A-02
1T-02
TURMO III
ZA-01
ST6-72
VT600
SATURN 20ST6-79
ST6-81
OP-16
ST6-90MAKILA T1
FGT2
SB15
GT2500 TF40
CENTAUR 40
501KBSCENTAUR 50
Typhoon 5.3
ST18ST30
ST40
Mercury 50
ST50
LM500
OR 990
PGT5
TYPHOON M
B30C
THM1203
501KB7
M7A-01
M7A-02
TornadoGT6001
AGT6000
Taurus 70
601KB9
SB5
Tempest
THM1204
Mars 90
SB30E
PGT 10
ASE120
SPW14
Candent Demo
Candent Adv
Technology
15
20
25
30
35
40
45
0 1 2 3 4 5 6 7 8 9 10
Power Rating (MW)
Eff
icie
ncy- %
S1A-02
1T-02
TURMO III
ZA-01
ST6-72
VT600
SATURN 20ST6-79
ST6-81
OP-16
ST6-90MAKILA T1
FGT2
SB15
GT2500 TF40
CENTAUR 40
501KBSCENTAUR 50
Typhoon 5.3
ST18ST30
ST40
Mercury 50
ST50
LM500
OR 990
PGT5
TYPHOON M
B30C
THM1203
501KB7
M7A-01
M7A-02
TornadoGT6001
AGT6000
Taurus 70
601KB9
SB5
Tempest
THM1204
Mars 90
SB30E
PGT 10
ASE120
SPW14
Candent Demo
Candent Adv
Technology
Therm
al E
ffic
iency (
%)
Power Rating (MW)
Higher Pressure Ratio Provides “Big Engine” Performance
Candent simple cycle engines have fuel consumption consistent with heavier recuperated engines
Simple Cycle Engines
Recuperated Cycle Engines
Data for graph from Sahm & Rosfjord UTRC Presentation to Second DOE/UN,
International Conference and Workshop on Hybrid Power Systems, 17 April 2002
13
Large (900kW) Mobile Power Genset Application
257. 53
113.7
Smaller, lighter, more easily transported system with same fuel consumption as diesel MEP- PU-810A
• Current Power Genset: MEP-PU-810A
– Power 840 kW
– Weight - 25,600 lbs
– Length - 21.1 ft
– Thermal Efficiency ~ 33%
– C-130 Transportable
Designed to be easily
Mounted on 1-1/2 Ton
Trailer, M103A3
Used in USAF Harvest Eagle and Harvest
Falcon Bare Base Operating Kits
900 kW in a package
similar to MEP003
• Candent Turbine Power System
– Power 900 kW
– Weight - 2,500 lbs (est.)
– Length - 12 ft
– Thermal Efficiency ~ 33%
– Competitive first cost, lower LCC
– Transportable in C-27, C-130, V-22, UH-47
15
Microturbine Genset Solutions
• The standard military 30kW genset is the MEP 805/815 – Diesel Powered
– 30kW, 110 VAC, 60 Hz, 3 Phase
– 88 cu ft
– 3,000 lb
– The MEP 815 is the 400 Hz version
• Candent has designed a microturbine genset to the requirements of
the MEP805/815 – Utilizes turbine hardware previously designed and tested under Army
contract to Candent
– Adds recuperator system to enhance efficiency
– Uses high speed (turbine output shaft rpm) generator
– Under 200 lbs (minus fuel tank) and 9 cu ft
– Small and light enough to install in HMMWV, or MRAP
– Small enough to install in tactical and SOC riverine or naval craft, 21 ft and
up, including new vehicles such as CCM and USSV
Current systems are effective but are NOT high power density designs
16
• Power Rating:
• AC Power:
• DC Power:
• Speed:
• Shock Loads:
• Materials:
20-40 kW (50 kW de-rated to 40 kW)
20-40 kW, 110/208 VAC, 3 Phase, 60 Hz
Optional10 kW, 24 VDC, with 10-30 kW AC
75,000 rpm
25g (40g peak)
Capable of surviving marine environment
Generator Specifications
Other: The generator will also be used during the start mode for
engine starting using a 24V battery.
Candent Technologies design is a microturbine based,
20-40 kW Advanced Marine/Land Generator system:
A high speed generator means lower weight and volume
20-40 kW Marine/Land Generator Specifications
17
Microturbine Genset Components
Alternator Case
Control System
High Power
Electronics
Combustor
Oil Sump Compressor
Turbine
Exhaust
Recuperator Alternator Rotor
Shaft
Bearings
Lube Oil Filter
Microturbines with recuperator and high speed generator
provide highly efficient power in a very small package
Acoustic Enclosure Not Shown
18
High Power Density 20-40 kW Microturbine Genset
18.0” 31.0”
21.0
”
72.0”
20-40 kW Genset
Estimated Dimensions
• Est. Weight: < 200 lb
• Est. Volume: < 9 cu ft
• Fuel Consumption: 1.5- 2.8 gal/hr
• Multi Fuel Capable
Compact and reliable power generation system
Acoustic Enclosure Not Shown
19
Fuel Consumption Same as Similar Size Diesel
19
• Flat SFC curve down to 30% power
– Allows system to be oversized and have greater capability for minimal weight penalty
– SFC and GPH are about the same as similar sized diesel
– Power off-load capability of up to 40 kw even on a hot day
Fuel Consumption GPH vs KW Output
0.000
1.000
2.000
3.000
4.000
5.000
0.0 10.0 20.0 30.0 40.0 50.0 60.0
KW
Fu
el
Co
nsu
med
GP
H
.
HP vs SFC
0.2
0.25
0.3
0.35
0.4
0.45
0.5
0 10 20 30 40 50 60 70 80
HP
SF
C (
Lb
/hp
-hr)
.
.
20
Microturbine Genset Advantages
• Smaller, lighter more mobile power – At least 80% lighter than conventional diesel system
– Smaller logistics transportation footprint
– Transportable in more aircraft types, including smaller rotorcraft
• Rugged design – Capable of being used in high shock environment, i.e. off the road, or in high
speed boats, or shocks due to explosive detonations in water or land
• High reliability and low maintenance – No oil change interval, top up as required
– Long life, over 40,000 hrs.
– Minimal on location maintenance
• Air filter cleaning when prompted by system
• Fuel consumption on par with diesels of similar size – No increase in fuel logistics tail required for fuel stocks
High power density in a smaller, more mobile package
22
Summary and Conclusions
• Increased deployment of modern warfare systems will require more power generation capability in the field to support the Warfighter
– Candent’s advanced turbine technology provides viable solutions
• Lighter, smaller, highly mobile systems
• Multi-fuel capable systems provide high flexibility
• Cost effective and competitive
• Technology is applicable to microturbine sizes from 20kW to 350kW, and in larger sizes up to 2.25MW
• Physical size enables installation in :
– Small land vehicles such as the HMMWV or the MRAP
– Small boats such as the 11m RIB / CCM, SOC-R, USV, or Mark V / CCH types, or similar sizes
– Large naval vessels
• Candent gas turbine technology is cost effective and competitive
– Acquisition costs competitive with similar power diesel systems
– Turbine system Life Cycle Cost is lower due to longer TBO’s and substantially lower scheduled and unscheduled maintenance costs
– Turbine system substantially enhances maintainability, supportability and readiness
Gas turbine based gensets offer viable, highly reliable,
highly mobile, cost effective high power density solutions
Contact Information
Hernando Munevar
President & CEO
317-336-4478
Manny Papandreas
Vice President Engineering
317-336-4477
Candent Technologies, Inc.
6107 West Airport Blvd, Suite 190
Greenfield, Indiana 46140
www.candent-technologies.com
Top Related