Dry compliant seal for phosphoric acid fuel cell

A dry compliant overlapping seal for a phosphoric acid fuel cell preformed f non-compliant Teflon to make an anode seal frame that encircles an anode assembly, a cathode seal frame that encircles a cathode assembly and a compliant seal frame made of expanded Teflon, generally encircling a matrix assembly. Each frame has a thickness selected to accommodate various tolerances of the fuel cell elements and are either bonded to one of the other frames or to a bipolar or end plate. One of the non-compliant frames is wider than the other frames forming an overlap of the matrix over the wider seal frame, which cooperates with electrolyte permeating the matrix to form a wet seal within the fuel cell that prevents process gases from intermixing at the periphery of the fuel cell and a dry seal surrounding the cell to keep electrolyte from the periphery thereof. The frames may be made in one piece, in L-shaped portions or in strips and have an outer perimeter which registers with the outer perimeter of bipolar or end plates to form surfaces upon which flanges of pan shaped, gas manifolds can be sealed

ISABELLE superconducting power distribution system

Research during the period June 1980 through May 1981 is described. Areas studied include: radioactive decay of /sup 199/Po and /sup 201/Po, /sup 202/At, /sup 189/Tl energy levels from Pb decay, /sup 192/Pb ..-->.. /sup 192/Tl ..-->.. /sup 192/Hg, and Ba decays; high spin states; inelastic scattering and reactions of heavy ions from deformed nuclei; and nuclear structure theory. (GHT

Integral edge seals for phosphoric acid fuel cells

A phosphoric acid fuel cell having integral edge seals formed by an elastomer permeating an outer peripheral band contiguous with the outer peripheral edges of the cathode and anode assemblies and the matrix to form an integral edge seal which is reliable, easy to manufacture and has creep characteristics similar to the anode, cathode and matrix assemblies inboard of the seals to assure good electrical contact throughout the life of the fuel cell

Thermal cycle time simulation analysis of a crotch photon absorber in an x-ray storage ring

The National Synchrotron Light Source is an electron accelerator facility at Brookhaven National Laboratory. The aim of this study is to test the capability of certain components in the accelerator to operate under these increased currents using Finite Element Analysis and prototype experimentation. Research efforts will be devoted to determine whether the component fails due to operating the beam at higher current levels. It has been concluded that certain components in the accelerator might be subject to failure under these upgrades. Among these components is the exit chamber crotch component, which is the direct link between the actual accelerator storage ring and the beam ports. This component is cyclically subjected to a high temperature and its design life as this temperature is increased, is under question. Analyzing this component through finite element analysis as well as simulating a prototype beam on the actual part in experiment is essential in testing and verifying whether this component needs upgrading or is capable of handling the increased heat load

Fast excitation variable period wiggler

The design of an easily stackable, variable period length, fast excitation driven wiggler, making use of geometrically alternating substacks of Vanadium Permandur ferromagnetic laminations, interspaced with conductive, non magnetic, laminations which act as eddy current induced field reflectors,'' is discussed and experimental results obtained with short wiggler models are presented

Fast excitation wiggler development

The design of an easily stackable, variable period length, fast excitation driven wiggler, making use of geometrically alternating substacks of Vanadium Permandur ferromagnetic laminations, interspaced with conductive, non magnetic, material laminations which act as eddy current induced field reflectors,'' is discussed and experimental results obtained with short wiggler models are presented. 7 refs., 13 figs

Beryllium window for synchrotron light sources

As part of an on-going upgrade program at the National Synchrotron Light Source, a parametric study of rectangular flat and curved beryllium windows of varying thickness and heights and under varying thermal loading was undertaken. The study consisted of a series of 2D and 3D thermal stress finite element analyses to determine the relative benefit of various combinations of parameters with respect to the windows` ability to withstand thermal loads. This study includes evaluation of fixed versus flexible mounting of flat and curved beryllium windows. Buckling analyses for both types of mountings are also included