NEW 1.8 MWe  (at ISO conditions) Power Plant for sale 

Contact Lane Kadel 503-239-5157  lane@rmaglobal.com

 ST18 Base Ratings at ISO Conditions 

Natural Gas Fuel, Dry Operation:  18,900 Rpm

Power Generation:  1,961 kW 

Thermal Efficiency:  30.2% 

Steam Production:  11,000 lb/hr @ 150 psig saturated 

  

Mechanical Drive: 2,629 shp 

Heat Rate:   11,715 Btu/kWh 

                        8,515 Btu/shp-hr 

 Contact Information: 

Lane Kadel 

Phone: (503) 239-5157      lane@rmaglobal.com 

 SCOPE OF SUPPLY  

ST18 Electric Generation Package

Pricing  

Prices are quoted in 2001 US Dollars. $1,100,000.00  

                        Basic Scope of Supply:  

 The following is noted as part of our offer:  

1.      Unit(s) are subject to prior sale.  Gas turbine deliveries typically require a six month lead time after receipt of order or a limited notice to proceed.  All unit deliveries are subject to further negotiation.  

2.      Unit(s) are quoted F.O.B. point of manufacture.  

3.      Offer is valid for 30 days from date of proposal.  

4.      All taxes, bonds, customs, duties, etc. are excluded from our quotation.  

5.      Equipment is warranted for a period of one (1) year from the date of start-up, or eighteen (18) months from the date of shipment, whichever occurs first.  

6.      Unit(s) are string-tested prior to shipment.  

7.      Customer Training and Technical Services during installation/commissioning are not included.  Service(s) may be purchased at a per diem rate.

 Basic Scope of Supply

 The standard scope of supply for the ST18 Electric Generation Package comprises the following major equipment assemblies and services:  

        ONE ST18 ELECTRIC GENERATION PACKAGE including:       

§         Pratt & Whitney Canada ST18 Industrial Gas Turbine equipped for natural gas fuel operation without water injection capability for NOx suppression  

§         Reduction Gearbox and Coupling  

§         Electric Generator – Direct Air Cooled, 60 Hz (see data sheet under:  Estimated Performance) including:

-       Exciter

-       Neutral Grounding Resistor

-       Terminal Box

a)      Generator Differential Relay Protection CT’s

b)      AVR CT (shipped loose for Customer installation)

c)      Surge Arrestor Package (shipped loose for installation by Customer)

-       Space Heater

-       Nine Stator RTD’s (three per phase)

-       Vibration Monitoring

-       Bearing Drain Site Glasses  

§         Lubrication Oil System for Gas Turbine, Gearbox and Generator  

§         AC Motor Starting System  

§         Inlet Filtration Air System and Silencer (Barrier Type Filters)  

§         Gas Turbine/Generator Enclosure with Acoustic Protection  

§         Fire Detection/Protection System for Gas Turbine/Generator Enclosure including:

-       Main CO2  storage cylinders

-       Detectors

-       Control panel  

§         Turbine Control System  

§         AVR/synchronizing Panel  

§         Finish painting of Gas Turbine/Generator  package prior to shipment to Customer. 

Basic Scope of Supply – Options  

The following options for equipment and services can be offered and are not included as part of the standard scope of supply as described in the preceding sections.  

Options for Equipment  

        GAS TURBINE OPTIONS

1.      Natural Gas Only with water injection (1 pump)

2.      Liquid Fuel Only (Dry)

3.      Liquid Fuel Only with water injection (1 pump)

4.      Dual Fuel with water injection (1pump)

5.      Extra Pump for water injection system (2 pump total)  

        LUBRICATION OIL SYSTEM OPTIONS

1.      Duplex Filters in lieu of standard simplex filters  

        WATER WASH CART

1.      Supply of portable water wash cart for compressor cleaning  

        STARTING SYSTEM OPTIONS

1.      Pneumatic Start System in lieu of AC starting system

2.      Electro-hydraulic Start System in lieu of AC starting system  

        INLET AIR SYSTEM OPTIONS

1.      Self Cleaning Air Filter (3 Stage) in lieu of barrier filter (excludes air compressor system and control)

2.      Self Cleaning Air Filter (3 Stage) in lieu of barrier filter (includes air compressor system and control)  

        EXHAUST SYSTEM OPTIONS

1.      Industrial grade exhaust stack (unsilenced) (21 ft)  

        GAS TURBINE/GENERATOR ENCLOSURE

1.      Deletion of Standard Enclosure

2.      Lightweight shell with Ventilation System (no acoustic protection provided)

         FIRE DETECTION AND PROTECTION SYSTEM

1.      Deletion of Gas Turbine/Generator Enclosure fire detection and protection system

         TURBINE CONTROL SYSTEM OPTIONS

1.      Supply of Remote Control Panel

2.      Supply of TCS interconnecting cable (100 ft)

         BATTERY SYSTEM FOR TURBINE CONTROL SYSTEM including:

§         24V DC Batteries

§         Battery Charger

§         Inverter

§         UPS

§         DC Distribution Panel (to be located and installed by Customer)

Note: Customer must supply back-up power to AC driven lubrication oil pump

        GENERATOR RELAY PROTECTION PANEL includes and as more specifically

        defined by Single Line Diagram:

§         25C, Sync. Check Relay

§         27, Under Voltage Relay

§         32, Reverse Power Relay

§         51G, Generator Ground Overcurrent Relay

§         51V, Generator Time Overcurrent Relay

§         60, Voltage Balance Relay

§         86, Lockout Relay

§         87G, Generator Differential Relay

§         87T, Transformer Differential Relay  

        MOTOR CONTROL CENTER FOR SUPPLIED COMPONENTS includes:

§         480 VAC, 600 amp., 3 Phase, 3 Wire with Ground Bus

§         Main Circuit Breaker

§         All feeds for the ST18 Auxiliaries and Supplied Equipment

§         Metering, Current and Potential Transformers

         5KV SWITCHGEAR

§         Vacuum or SF6 Type Generator Breaker

§         Current and Potential Transformer for Metering and Protective Relaying  

CONTROL ROOM ENCLOSURE FOR SUPPLIED COMPONENTS includes:

§         Enclosure is sized to accommodate standard turbine control panel, synchronization panel, generator relay panel, generator breaker/switchgear, fire protection/detection panel, battery system inclusive of batteries, charger and panel, and motor control center

§         Enclosure is equipped with lighting, AC power receptacles, and air conditioning/heating unit

         FUEL SYSTEM OPTIONS

1.      Fuel Gas Regulating Valve (Utility Side)

2.      Fuel Gas Metering

3.      Fuel Gas Filtration (Duplex Filters)

4.      Fuel Oil Metering

5.      Fuel Oil Filtration Skid

 INTERCONNECTING CABLE SYSTEMS OPTIONS

1.      Supply of interconnecting cable supplied components standard equipment by Customer (excludes field installation hardware including provisions of conduit/cable trays, cable fasteners, electrical hardware, etc. required for proper installation)

         INTERCONNECTING PIPING SYSTEMS OPTIONS

1.      Supply of interconnecting piping by Customer  

        TOOLING-Supply of tools for turbine removal and re-installation  

Estimated Performance  

The following performance data is presented for planning purposes to show estimated

simple cycle performance of the ST18 Electric Generation Package.  An estimate is also

provided to show the amount of steam that can be typically produced for cogeneration

applications.

  

Ambient Temp (F)

Fuel Type

Fuel (lb/hr)

Output (kW)

Heat Rate (Btu/kw-hr)

GT Exhaust Flow (lb/s)

GT Exhaust Temp. (F)

Estimated Steam Flow (lb/hr)

 

 

0

 

Natural Gas

 

 

 

Liquid Fuel

 

 

1282

 

 

 

1388

 

2420

 

 

 

2365

 

10940

 

 

 

10885

 

20.46

 

 

 

20.34

 

932

 

 

 

933

 

11540

 

 

 

11340

 

 

59

 

Natural Gas

 

 

 

Liquid Fuel

 

 

1066

 

 

 

1142

 

1860

 

 

 

1780

 

 

11840

 

 

 

11900

 

17.48

 

 

 

17.17

 

991

 

 

 

996

 

10790

 

 

 

10550

 

 

100

 

Natural Gas

 

 

 

Liquid Fuel

 

 

917

 

 

 

979

 

1455

 

 

 

1380

 

13020

 

 

 

13160

 

15.21

 

 

 

14.89

 

1051

 

 

 

1056

 

10260

 

 

 

10000

 Estimated Emissions

 

Natural Gas

Liquid Fuel

 

(Dry)

(Wet)

(Dry)

(Wet)

NOx – ppm

100

25

170

42

CO - ppm

20

50

35

70

NOTES:

1.       Simple cycle performance data based on “dry” operating conditions, water injection not included, sea level elevation, installed losses included.

2.       Output measured at generator terminals.

3.       Estimates for steam production based on “dry” operation conditions, water injection not included, sea level elevation, typical installed losses included for cogeneration applications, assumes steam to be produced at 150 psig saturated.

4.       Fuels based specifications for Working Fluids with Lower Heating Values of:

                                -     Natural Gas:                   20650 BTU/lb (LHV)

                                -     Liquid Fuel:                     18550 BTU/lb (LHV)

5.       Estimated emissions based upon a 59ºF ambient.  Wet emissions based on a 1:1 water to fuel ratio.

 SYNCHRONOUS GENERATOR DATA 

 

kW

2600

KVA

3250

P.F.

0.80

80ºC RISE

VOLTS

4160

AMPS

451

RPM

1800

  

REACTANCES

PER UNIT ON

3250 kVA BASE

 

 

 

 

 

Direct Axis Synchronous

(Unsaturated)

Xd

1.741

Direct Axis Transient

(Rated Voltage)

X’d

0.231

Direct Axis Subtransient

(Rated Voltage)

X”d

0.160

Quadrature Axis Synchronous

(Unsaturated)

Xq

0.901

Quadrature Axis Subtransient

(Rated Voltage)

X”q

0.205

Negative Sequence

(Rated Voltage)

X2

0.187

Zero Sequence

(Rated Voltage)

Xo

0.066

Short Circuit Ration

 

SCR

0.684

 

TIME CONSTANTS

 

 

Direct Axis Open Circuit Transient

T’do

4.240 Sec.

Direct Axis Short Circuit Transient

T’d

0.563 Sec.

Direct Axis Short Circuit Subtransient

T”d

0.030 Sec.

Short Circuit Armature

Ta

0.061 Sec.

 

RESISTANCES

 

 

 

Armature (per phase at 25ºC)

0.03152 Ohms

Field (at 25ºC)

0.560 Ohms

Rotor Inertia

2800 Lb-Ft2

  

      EFFICIENCY

 

 

 

Load

Eff. At 0.80 P.F.

4/4

      96.5%

3/4

      96.3%

1/2

      95.5%

  Natural Gas Fuel

ST18 Product Specifications 

Natural Gas Fuel Properties 

PROPERTY

MIN LIMIT

MAX LIMIT

TEST METHOD

Net Calorific Value

Btu/cu ft

  (MJ/m3)

 

800

(29.8)

 

1100

(41.0)

ASTM D900

Specific Gravity

0.57

0.62

ASTM D1070

Water Content

  lb/million cu ft

  (kg/million cu Meters)

 

 

7.0

(112)

ASTM D1142

Hydrocarbon Condensables

and other Liquids

  lb/million cu ft

  (kg/million cu Meters)

 

 

 

0.5

(8)

See Note 3

Total Solids

  lb/million cu ft

  (kg/million cu Meters)

 

 

0.08

(1.28)

ASTM D1704

Hydrogen Sulphide, Mol %

 

0.18 (See Note 4)

See Note 3

Mercaptans, Mol %

 

0.001

See Note 3

Particle size of solids

 

3 microns

 

Note 1.  All values to be reported at standard ISO conditions.

Note 2.  Tests shall be carried out insofar as practical in accordance with the listed ASTM

Note 3.  Test method and procedure to be agreed upon between Customer and vendor.

Note 4.  A level of 0.18 Mol% max has shown no problems.  If higher levels are anticipated

              consult P&WC for precautionary measures and comments.

 Gas Piping Interface Requirements 

Interface requirements for natural gas fuel at the supply flange of the equipment

package are: 

            Design Pressure:                    350 psig (24145 kPa) 

            Design Temperature:              -65ºF to 450ºF (-54ºC to 230ºC) 

            Design Flow:                           1500 lb/hr (680 kg/hr)

Liquid Fuel  ST18 Product Specifications 

Recommended Liquid Fuels 

The following liquid fuels can be used in the ST18 engine if the additional fuel property

requirements are satisfied.  (See following table for property requirements). 

CATEGORY A

CATEGORY B

CATEGORY C

Light virgin naptha and unleaded gasoline types

 

Widecut fuels of the JP-4 (MIL-T-5624) and Jet B (ASTM D1655) types

JP-5 (MIL-T-5624)

 

JET A, A-1 (ASTM D1655)

No. 1-D diesel fuel (ASTM D975)

 

No. 1 fuel oil (ASTM D296)

No. 1 GT gas turbine fuel oil (ASTM D2880)

No. 2 diesel fuel (ASTM D975)

 

No. 2 fuel oil (ASTM D396)

No. 2 GT gas turbine fuel oil (ASTM D2880)

 

Marine diesel (MIL-F-16884)

 

Liquid Fuel Property Requirements

PROPERTY

LIMIT

Viscosity, Cs at 40ºC (104ºF)

3.5 max, 1.7 min

Flash Point, ºC (ºF)

May depend on legal limits and safety regulations

Sediment, % by volume

< 6.34 mg/litre

Free water content

< 0.01% by volume

Carbon/Hydrogen Ratio

No limit

Sulfur, % by weight

0.4 max

Ash, % by mass

0.005 max

Metal Contaminants, ppm by weight

 

     Vanadium (V)

0.2 max

     Sodium (Na) + Potassium (K)

0.2 max

     Calcium (Ca)

0.1 max

      Lead (Pb)

0.1 max

     Copper (Cu)

0.02 max

Category A Fuel only

 

     Reid Vapor Pressure, lbs.

12.5 max

     Lubricity

Dependent on pump characteristics

     Aromatic Content, % by volume

25% max

     Smoke Point

20 mm min

Category B Fuel only

 

     Cloud Point, ºC (ºF)

9.5ºC (15ºF) below fuel temperature at pump inlet

     Aromatic Content, % by volume

25% max

     Smoke Point

20% max

Category C Fuel only

 

     Cloud Point, ºC (ºF)

9.5ºC (15ºF) below fuel temperature at pump inlet

     Carbon Residue (on 10% bottoms), %

0.25% max

     Aromatic Content, % by volume

20% max

 Liquid Fuel Interface Requirements 

Interface requirements for liquid fuel at the supply flange of the equipment package are: 

                        Maximum Fuel Flow:               16000 lb/hr (727 kg/hr) 

                        Maximum Fuel Pressure:       950 psig (6545 kPa)* 

                        Temperature Range:              -40ºF TO 175ºF (-40ºC to 79ºC) 

            *An optional fuel oil forwarding/injection system can be provided

Water

ST18 Product Specifications 

Gas Turbine Water Injection 

Water used to suppress NOx emission levels, shall meet or exceed the following

requirements: 

Water Injection Quality Requirements 

 

Limit

Test Method

Total solids, ppm

Sodium, ppm

Silica, ppm

Acidity, PH

Particle size,

microns

Conductivity,

Micromho/cm

1.0

0.10

0.02

6.0-8.5

10.0 max

 

1.0 max

ASTM-D1888

ASTM-D1428/D2791

ASTM-D859

ASTM-D1293

 Water Injection Interface Requirements 

Interface requirements for water at the supply flange of the equipment package are: 

                        Maximum Flow:                       5 GPM (19 L/M)       

                        Minimum Flow:                        1 GPM (4 L/M) 

                        Operating Pressure:               450 psig (4105 kPa) 

                        Maximum Pressure:               500 psig (3450 kPa) 

Gas Turbine Water Wash 

Water washing of the gas path components may be done with clean, clear, drinking

quality water. 

Approved Lubrication Oils

ST18 Product Specifications 

Approved Lubrication Oils 

The oils listed below are fully approved for use in the ST18 engine.  Refer to ST18 Maintenance Manual.  This list is for convenience only.  If a discrepancy exists between this list and the Maintenance Manual, the Maintenance Manual takes precedence. 

                        5 Centistoke Oils – PWA 521, Type 1 

§         Aero Shell Turbine Oil 500

§         Mobil Jet Oil II

§         Castrol 5000

§         Exxon Turbo Oil 2380 

                        4 Centistoke Oils

                      §         Castrol 4000

                         5 Centistoke Oils – PWA, Type II, (Third Generation)

 The term “Third Generation” is one that oil companies use to describe turbine oils which they claim have superior thermal and oxidation stability when compared to Type II, 5 centistoke oils.

  §         Aero Shell Turbine Oil 560 §         Mobil Jet Oil 254

 No other oils are approved for use in ST18 and ST18A engines.  Should the use of an oil not listed be desired, contact manufacture for consultation.

Estimated Shipping Weights and Sizes 

 

 

 

Item

Estimated Size

(w x l x h)

(inches)

 

Estimated Weight

(pounds)

 

1)

GT/Generator Skid with Enclosure

102 x 324 x 120

53,000 lbs.

 

2)

Neutral Grounding Resistor

38 x 38 x 32

325 lbs.

 

3)

Lube Oil Cooler

a)       Engine Oil Cooler

b)       Reduction Gearbox Oil Cooler

 

40 x 84 x 55

40 x 102 x 48

 

1,300 lbs.

1,450 lbs.

 

4)

Oil Mist Eliminator

30 x 31 x 78

600 lbs.

 

5)

AC Motor Starting System

12 x 10 x 20

55 lbs.

 

6)

Inlet Filtration System with Ducting/Silencing

102 x 190 x 83

5,000 lbs.

 

 

7)

Enclosure Ventilation Equipment

48 x 48 x 48

(2 Pallets)

250 lbs.

Each

 

8)

Exhaust System

a)       Expansion Joint

b)       Diffuser

c)       Hardware Kit

 

12 dia x 39

40 dia x 80

12 x 12 x 24

 

300 lbs.

340 lbs.

100 lbs.

 

9)

Fire Extinguishing Skid with Panel

48 x 48 x 84

3,600 lbs.

 

10)

Turbine Control System

34 x 34 x 90

800 lbs.

 

11)

AVR/Synchronization Panel

36 x 12 x 48

300 lbs.

 

12)

Fuel Oil Skid (optional)

36 x 36 x 30

500 lbs.

 

13)

Water Injection Skid (optional)

36 x 36 x 30

450 lbs.

 

14)

DC System (optional)

32 x 24 x 90

400 lbs.

 Notes:   1.          Shipping weights and sizes are estimated and may change with varying scope options.

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