Taylor-Wharton LP3 - Manual (Page 5)

INTRODUCTION
This manual provides information for the operation and maintenance of Taylor-Wharton's Laser Pak III
transportable cryogenic gas supply system. The Laser Pak III is designed for applications requiring nitrogen,
argon, or oxygen gas at pressures and flow-rates higher than possible with traditional pallet base cryogenic
vessels. The Laser Pak III is capable of delivering gas at a continuous rate of 2,000 standard cubic feet per
hour while maintaining a supply pressure exceeding 350 psig. Gas delivery rates of 3,000 standard cubic feet
per hour are possible during intermittent use.
Product specifications, flow diagram, views, and important dimensions are shown on the general arrangement
drawing provided in the appendix of this manual.
System Description
The Laser Pak III consists of a cryogenic liquid vessel, piping, vaporizer, and a patented high capacity
pressure builder. The product is mounted on a galvanized steel pallet for easy handling by forklift. A
galvanized steel frame encompasses the unit and protects it during transport.
A 393 liter liquid capacity (437 liter gross capacity) cryogenic vessel is included in the system. The vessel
consists of a pressure vessel suspended inside a jacket. The space between the pressure vessel and the jacket
is evacuated and insulated with a micro-fiberglass / aluminum foil radiation shield. Both the inner pressure
vessel and vacuum jacket are constructed of type 304 stainless steel. The vessel is designed and constructed in
accordance with DOT-4L and may be legally transported by truck in the United States while containing
product.
Piping circuits allow the vessel to vent, fill, pressurize, and provide pressurized gas. Piping is type-304
stainless steel. Valves are brass. Fittings are machined from forged brass or type-316 stainless steel. The
vaporizer and pressure builder are constructed of aluminum.
Instrumentation consists of a pressure gauge and a differential pressure gauge. The pressure gauge allows the
vessel pressure to be monitored. Accurate measurement of the vessel contents is provided by the differential
pressure gauge.
The Laser Pak III pressurizes cryogenic liquid by adding heat to the liquid in a controlled fashion. All energy
for building pressure is provided by heat from ambient air. The pressure builder design is protected by United
States Patent Number 6,276,143.
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