corrosion resistance of the as brazed pf**(**r**) heat exchanger as achieved by alloy selection

the pf**r (parallel flow) condenser possesses numerous advantages for the automotive designer. light weight, compact dimensions, low refrigerant charge and high performance are well documented features. in addition, the pf condenser offers a corrosion resistant materials package. this helps to assure a long life in a vehicular application..

nondestructive inspection and life determination of disc material

the prime role of nondestructive evaluation is to support development and validation of the two main design processes - which are the materials and manufacturing method design and engineering design of the engine. the second role of nondestructive evaluation is to monitor on a routine basis these design processes during the manufacture an..

wet-wall electroinertial precipitator: a highly efficient air cleaner for cotton dust

a wet-wall electroinertial air cleaner has been developed to control and remove dust generated during the processing of cotton textile fibers. the combination of electrostatic and inertial forces provides for high-efficiency collection of fine cotton dust, and the wet wall is used to continuously flush out the precipitated dust, thus avoi..

effectiveness of some crops in removing minerals from soils irrigated with sewage effluent

a series of experiments was initiated in 1975 in israel to study the possible use of secondary sewage effluent as a source of both water and nutrient for some crops. at the same time uptake of minerals by the crop could prevent excessive buildup of toxic elements in the soil. the crops used were rhodes grass, cotton and sugar beet. efflue..

calorimetric study of polyester/cotton blend fabrics. iii effects of binary retardant systems

the efficiencies of binary flame retardant systems on 50/50 polyester/cotton blend fabric were evaluated with an isoperibol calorimeter. the two binary retardant systems studies were 1) diamonium phosphate (dap) and tris (2,3-dibromopropyl) phosphate (t23p) and, 2) tetrakis (hydroxymethyl) phosphium chloride with urea finish thpc/urea) an..

welded steel for offshore construction

techniques used presently to interpret the significance of crack opening displacement (cod) traces lead to severe requirements for post weld heat treatment and the results obtained often preclude the use of high deposition welding techniques for much of the work involved in constructing a large platform. marked differences in the behavior..

small scale gasification of biomass to produce a low btu gas

the california energy commission and the university of california, davis, have been developing gasification technology for converting various agricultural and forestry residues to a low btu gas since 1976. the systems are intended for small scale use in dispersed locations such as sawmills, food processors, cotton gins, etc. the gas produ..

calorimeteric study of polyester/cotton blend fabrics $em dash$ 2. interaction of flame retardant fibers

the efficacy and efficiency of dual flame retardant systems for polyester/cellulosic blend fabrics were studied using an isoperbol calorimeter. blend fabrics containing inherently flame retardant fibers were evaluated. they include blend fabrics with various blend ratios of 900f dacron and pfr rayon, polyester and pfr rayon, and 900f dacr..

calorimetric study of polyester/cotton blend fabrics $em dash$ 1. combustion and effects of partial retardants

a series of polyester/cotton blend fabrics were studied with two isoperibol calorimeters of slightly different design. the measured heat release reached a minimum at the blend containing about 55 cotton, while the rate of heat release decreased linearly from 100 cotton to 20 cotton. the burning of a 100 polyester fabric showed characteris..

flame retardancy of polymeric materials, volume 5, 1979

this volume contains three review papers which cover the following subjects $em dash$ (1) flame retardance of cotton and other naturally occurring cellulosic polymers; flammability and flame retardation of cotton-polyester blends; red phosphorus as a flame retardant. the authors discuss not only the mechanics of flame retardant action but..