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Product Alerts
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From Alcatel Vacuum Products, Inc.
Hill PHOENIX, a manufacturer of refrigeration systems for commercial installations, needed a way to cut gas costs without sacrificing its reputation for quality. The Conyers, GA-based company used helium to test for leaks in its units, but helium prices were escalating and supply restrictions driving them even higher. With the cost of helium projected to continue to rise for the foreseeable future, the company knew prices wouldn't decline; but teamwork and a willingness to test new options led to a solution that will save the company $300,000 a year. Product Announcements
Topics of Interest
The U.S. Air Force Space Battlelab has backed away from the Near-Space Maneuvering Vehicle (NSMV) following a series of technical problems that have caused redesigns and scuttled flight attempts.
"The...
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III. Operating Principle Detonation Drivers
The detonation-driven shock tube, first proposed by Bird,3 has been studied by several investigators. 4 , 13 , 15 20 In a detonation-driven shock tube or...
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CHAPTER LIST
Chapter 38: Cryogenics
Chapter 39: Ultralow-Temperature Refrigeration
Chapter 40: Biomedical Applications of Cryogenic Refrigeration
OVERVIEW
Cryogenics is a term...
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The development of the GTAW process was accelerated early in 1940. Initially the process was called ''Heliarc'', because Helium was used for the shielding gas. Later when argon was available the...
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Each valve is tested using a helium mass spectrometer leak detector calibrated for a minimum sensitivity of 2x10-10 Std. Atm. cc/sec of He. Internal welds are inspected for pits, cracks, and other...
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