# Thread: will 12,100 pounds of molten salt gen steam to run Generator

1. The question is will 12,100 pounds of molten salt at a temperature of 1050 stored in a 3’ by 8’ storage tank run through a heat exchanger generate enough steam to run this generator for 4 hours?

If not then how much will be needed?

444 Carpenter Avenue
P.O. Box 427
Wheeling, IL 60090-0427
Phone 847-541-5600
FAX 847-541-1279
Toll Free 800-704-2002 FOR SALE

7500KW (9375KVA) GENERAL ELECTRIC
NON-CONDENSING AUTO-EXTRACTION
STEAM TURBINE GENERATOR UNIT
850PSIG @ 825°F W/150PSIG #A.E 50PSIG B.P.
3/60/4160V. 3600RPM 1959

TURBINE

Capacity 7500 KW
Manufacturer Gerneral Electric
Stages 11 (Multi Valve)
Initial Pressure 850 PSIG
Initial Temperature 825°F
Automatic Extraction 150 PSIG
Extraction Size 14"
Exhaust Pressure/Vac 50PSIG
Speed 3600 RPM
Steam Rate 18.7 LB/KW.HR.
Inlet Size 8"
Exhaust Size 20"
GENERATOR A.C.

Capacity 9375 KVA
Manufacturer General Electric
Voltage 3/60/4160V
Speed 3600 RPM
P.F. 80%
Amps 1301

EXCITER

Rating 40 KW
Manufacturer General Electric
Voltage 125 V.D.C.
Speed 3600 RPM

Also included are: Lube oil reservoir with coolers, trip & throttle valve, switchgear and controls, relating connections and piping.
IMMEDIATELY AVAILABLE

2.

3. This article has information on how large the salt tank needs to be.

http://en.wikipedia.org/wiki/Thermal...alt_technology

A 100-megawatt turbine would need tanks of about 30 feet (9.1 m) tall and 80 feet (24 m) in diameter to drive it for four hours by this design.
Your turbine is 7.5 megawatts, so you would need 7.5% of that. A tank 30 feet high by 80 feet in diameter is 150,720 cubic feet. 7.5% of that is 11,304 cubic feet.
If your tank is 3 feet high by 8 feet diameter that is around 150 cubic feet. So that's about 1/75 of the size you need.

4. Originally Posted by Harold14370
This article has information on how large the salt tank needs to be.

http://en.wikipedia.org/wiki/Thermal...alt_technology

A 100-megawatt turbine would need tanks of about 30 feet (9.1 m) tall and 80 feet (24 m) in diameter to drive it for four hours by this design.
Your turbine is 7.5 megawatts, so you would need 7.5% of that. A tank 30 feet high by 80 feet in diameter is 150,720 cubic feet. 7.5% of that is 11,304 cubic feet.
If your tank is 3 feet high by 8 feet diameter that is around 150 cubic feet. So that's about 1/75 of the size you need.
Thnaks Harold. I wasn't sure if there was a direct correlation but that is actually the spec I used. So wouldntt that be 30' divide by 10 or 10% be 3'?

So it is better to use volume then tank size?

5. Cylinder shape.

A cylindrical shape that has a diameter of 80 feet and a depth of 30 feet has a volume of:

Volume
= 4270.1 cubic meters
= 4270100000 cubic centimeters
= 5585.1 cubic yards
= 150800 cubic feet
= 260580000 cubic inches
= 1128000 U.S. gallons
= 4270100 liters

150800/10 = 15,080 for 10 mw 12,100 for 7.5 mw looks good. But thank you for giving me a baseline to use.

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