Liquid Oxygen/Nitrogen Vaporizers General, Physical, Functional And Interface Description

Question 1

Vaporizers

Answer 1

Converts high pressure cryogenic liquid to a high pressure gas at or near ambient temperature

Question 2

Intermittent

Answer 2

To cease for a time and then re-start. To operate at intervals

Question 3

Vaporizer Temperature Operating Range INLET

Answer 3

Cryogenic liquid temperature

Question 4

Vaporizer Temperature Operating Range OUTLET

Answer 4

20 degrees Fahrenheit to 90 degrees Fahrenheit

Question 5

Vaporizer Power Requirements

Answer 5

112.5 kw at 440 VAC
60 Hz
3 Phase

Question 6

Vaporizer input pressure is the same as the cryogenic pump discharge pressure maximum for liquid nitrogen

Answer 6

5000 PSIG

Question 7

Vaporizer input pressure is the same as the cryogenic pump discharge pressure maximum for liquid oxygen

Answer 7

3200 PSIG

Question 8

Vaporizer output pressure

Answer 8

Will vary according to downstream system pressure

Question 9

Heat Exchanger Assembly

Answer 9

9 aluminum cast modules
Two base load heaters per module
One trim load heaters per module

Question 10

Pressure Control PS-1 Safety Device

Answer 10

Set to de-energize the Cryogenic Pump and Vaporizer at 3200 PSIG rising for oxygen and 5000 PSIG rising for nitrogen

Question 11

TS-1 Safety Device

Answer 11

Open if gas discharge temperature drops below 20 degrees Fahrenheit.
Manually reset

Question 12

TS-2 Safety Device

Answer 12

Cycles trim load heaters on and off to maintain vaporizer discharge temperature at 70 degrees Fahrenheit

Question 13

TS-3 Safety Device

Answer 13

Opens when vaporizer discharge gas temperature rises to 90 degrees Fahrenheit
Manually restart

Question 14

TS-4 Safety Device

Answer 14

Open switch when the vaporizer casing temperature rises to 350 degrees Fahrenheit
Manually restart