LNG FueL puMpING SySteMS

Marine

rail

land

Off-rOad

2 Fuel Supply Pumps – LNG

ACD offers a wide range of cryogenic fuel supply pumps to accommodate various flow and pressure requirements for LNG fueled gas engine systems, bulk transfer, off-loading, and bunkering.Each centrifugal and reciprocating pump is specifically designed to meet LNG or CNG applications while providing both efficient operation and extended product life. Cryogenic, hydro, and pneumatic testing during the assembly phase ensure that ACD pumps comply with industry requirements and match product performance guarantees.

• Rail/Locomotive (LNG)• Marine (LNG)• Bus (CNG & LNG)• Light or medium duty truck (CNG & LNG) • Heavy duty truck (LNG)• Passenger car (CNG) • LMT (LNG)

• Fuel gas systems• LNG high pressure feed to L/CNG station vaporizers• Vehicle loading and trailer off-loading• Bulk transfer • Bunkering

LIqueFIed NAturAL GAS

Fueling Applications

Pump Applications

LNG properties• 1 Litre = .64 Nm3 gas • ± 95% methane (CH4) • Expansion (liquid to gas): 1 to 620 • Colorless & odorless • Non toxic, non corrosive • Specific gravity: Natural gas = .55

(Air = 1.0, Gasoline = 3.4, Diesel > 4.0) • Flammability limit: 5-15% (vs. 0.5-4.1% for

diesel and 1-7.6% for gasoline) mixed with air • Ignition temperature: 281-343ºC (538-649°F)

estimated Greenhouse Gas (GHG) reduction in Light-duty Vehicles (LdVs)

• LNG (21-25%, CH4)• CNG (21-26%, CH4)• Natural gas vehicles reduce emissions

(NOx = 87%; CO = 70%)

L/CNG StAtIoN operAtIoNS

Fuel Supply Pumps – LNG 3

LNG Station operations• Fuel is brought in by transport trailers/tank lorrys• LNG is stored in a cryogenic tank• Vehicles are fueled using an ACD pump and

single fill hose from dispenser L/CNG Station operations• Up stream same as LNG• LP pump provides boost for the HP pump• HP pump discharges HP LNG to vaporizer• CNG from vaporizer goes into storage tank, dispenser to vehicle

P

P

.. .

. ..LNG

VAPORIZERCNG STORAGE TANK CNG VEHICLE

LNG VEHICLE

LNG STORAGE TANK LNG DISPENSER

CNG DISPENSER

LNG

CNG

TANK LORRY TRAILER

LP LNG PUMPTC-34TC-34.2

HP LNG PUMPP2KX9SGV

CNG Station operations• Fuel is supplied via local pipeline• Gas is compressed and stored in ASME tubes/bottles• Vehicles are fueled by pressure differential from the

storage banks/compressor

4 Fuel Supply Pumps – LNG

• The TC-34.2 pump has been specifically designed for operation in LNG with the most efficient set of hydraulic designs and lowest NPSHR in the industry. Key features of the design are the permanent magnet motors that are highly efficient and compact thus reducing the size and weight of the pump and wide operational capability through the use of a VFD. The modular multi-stage design allows to reach very high differential heads and the ratings vary from 2.5 kw to 250 kw.

tC-34.2 puMpS

Performance Map

Features & Benefits• Light weight and compact• Small diameter lower cost in-tank pumpwell installation• All parts are precision machined from aluminum forgings• No castings, no defects, no re-pours, on time delivery• Lower NPSHR, less than 0.5 M• Dynamic thrust balance drum – long bearing life

Applications • LNG feed to high pressure (L/CNG) pump• LNG feed to natural gas engines• LNG storage tank refilling• LNG circulation • Storage transfer and pipeline injection for

LNG peak shaving plants• LNG bunkering

10

100

1000

1 10 100 1000

Diff

eren

tial H

ead

– fe

et

3.0

30.5

304.8

Diff

eren

tial H

ead

– m

eter

s

Flow Rate – gpm

H210

G210

H170

G170

G145F145

D145

E145

D125

C125

D90

C90

3.8 38 379 3785

Flow Rate – lpm

Vacuum jacketed sump available

(optional)MSP-34.2 in-tank

• Negligible bearing thrust loading is accomplished through the use of an active thrust balancing system resulting in extended bearing life. An innovative arrangement ensures wetted bearings and motor cooling during start up.

• The pump is designed to operate in a sump or in-tank in a pump well and is available with a removal system that allows the pump to be removed from the LNG tank without having to empty the contents.