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A clean air continuous flow propulsion facility
28th Joint Propulsion Conference and Exhibit, 1992Consideration is given to a contaminant-free, high enthalpy, continuous flow facility designed to obtain detailed code validation measurements of high speed combustion. The facility encompasses uncontaminated air temperature control to within 5 K, fuel temperature control to 2 K, a ceramic flow straightener, drying of inlet air, and steady state ...
R. KRAUSS, J. MCDANIEL, JR.
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Analysis: California continues clean-car quest
Engineering & Technology, 2009One of Barack Obama's first actions as incoming US President could allow California to set its own limits on greenhouse gas emissions from vehicles.US Environmental Protection Agency (EPA) denied California's request for a waiver exempting it from the US Clean Air Act, which mandates limits on air pollution levels but currently not greenhouse gas ...
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Clean rooms: Continuing evolution of fan filter units for clean rooms
Filtration + Separation, 2011Rob Flaherty, International Sales Manager at Trion, explores the advantages of using FFUs in both large and small clean rooms and focuses on exciting, low-energy FFU developments.
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Mask cleaning strategies: a continuous ion removal concept
SPIE Proceedings, 2006Researchers have linked the occurrence of reticle haze to many parameters which include cumulative irradiation, the greater use of 193nm in low-k1 lithography, humidity and the presence of ammonium with other process contaminants. Published methods of contaminant reduction include 1) volatilization by thermal treatment 2) induced preemptive ...
Steve Osborne +2 more
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Clean Water Act Jurisdiction: The Saga Continues
Journal AWWA, 2009This article reviews the current state of recent Clean Water Act (CWA) jurisprudence and the U.S. Senate's efforts to change the law. The article also raises a variety of issues that if left unaddressed by the Senate legislation, may have dire consequences for efforts to protect the nation's waters.
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Continuous Cleaning of Heat Exchanger with Recirculating Fluidized Bed
Heat Transfer Engineering, 1987Fluidized bed heat exchangers for liquids have been studied in the United States, the Netherlands, and the Federal Republic of Germany. Between 1965 and 1970, fluidized bed heat exchangers were developed in the United States as brine heaters in seawater desalination.
JOCHEN St. KOLLBACH +2 more
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Continuous-wave laser cleaning of historic monuments and buildings
Annual Meeting Optical Society of America, 1985Current mechanical and chemical techniques for the conservation and cleaning of stone, although successful in many applications, are not always kind to underlying surfaces. This is a major consideration when cleaning delicate artwork. These techniques are often abrasive, caustic, onerous, and time-consuming.
Hugh Masterson +2 more
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Friedel–Crafts alkylation in supercritical fluids: continuous, selective and clean
Chemical Communications, 1998Continuous Friedel–Crafts alkylation of mesitylene, C6H3Me3, and anisole, C6H5OMe, with propene or propan-2-ol has been carried out in supercritical propene or CO2 using a heterogeneous polysiloxane-supported solid acid Deloxan® catalyst in a small fixed bed reactor (10 ml volume); 100% selectivity for mono-alkylated products with 50% conversion could ...
Martin G. Hitzler +4 more
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Depolymerization of clean unfilled PTFE waste in a continuous process
Journal of Applied Polymer Science, 2006AbstractA continuous process is described whereby waste PTFE was converted into tetrafluoroethylene (C2F4, TFE), hexafluoroethane (C2F6, HFE), hexafluoropropylene (C3F6, HFP), and octafluorocyclobutane (c‐C4F8, OFCB). The waste PTFE was depolymerized inside a reactor that was heated by a radiofrequency induction generator.
I. J. Van Der Walt, O. S. L. Bruinsma
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Auto-line filter: self-cleaning, continuous filtration system
Filtration & Separation, 2002Abstract More end users are looking to invest in new liquid filtration processes to help improve product quality, reduce waste disposal and increase work safety. But all this needs to be achieved at an economic price. Sparkler Filters International, The Netherlands, thinks it has the answer.
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