Abstract: A dual air threading nozzle apparatus is disclosed for threading a paper web through a single tier drying section of a paper making machine. The single tier drying section includes a dryer roll, a dryer felt and a vacuum transfer roll. The dual air threading nozzle apparatus emits two angular planes of airflow for urging the paper web in a first direction to prevent engagement with the doctor blade for the dryer roll and in a second direction to closely conform to the dryer felt as it traverses between each dryer roll and vacuum transfer roll.

Abstract: An apparatus and method for remediating soils and other materials contaminated with organic compounds comprising dual volatilizing zones and radiant heat. The material is treated in the volatilizing zones to substantially volatilize the organic compounds contained within the material.

Abstract: A drier apparatus for drying sheets of photosensitive material processed with processing solutions while the photosensitive material is being transported. Rollers are provided along a transport passage for transporting the photosensitive material, and the rollers transport the photosensitive material and dry the photosensitive material by heating. The rollers are heated by heaters, respectively. The surface temperature of each roller is detected by a temperature detector, and a controller controls the heaters in such a manner that the range of fluctuation of the surface temperature of each roller falls within a predetermined range of values on the basis of the change with time of the detected surface temperatures of the rollers.

Abstract: A system is described for producing small uniform pellets of predetermined size which are substantially free of fines from mechanically dewatered sewage sludge. The system includes a process and apparatus for mixing the dewatered sludge with previously dried, recycled particles of said sludge, drying said mixture in a thermal drier, separating a substantial portion of the dried solids from the drier off gas, clarifying said separated solids to separate the pellets of predetermined size, oversize pellets, and undersize pellets and particles, mechanically crushing the oversize pellets and admixing the crushed oversize pellets with the undersize pellets and particles, and recycling said mixture by mixing said mixture with incoming dewatered sludge to the drier.

Abstract: A regenerative heat pump includes a main compartment divided into three chambers by two reciprocable displacers. Gas in the main compartment is heated. A drive mechanism is driven by a start-up motor and is connected to the displacers to reciprocate those displacers. A flow path interconnects the chambers and exchanges heat with a heat exchanger. A secondary compartment contains a piston and communicates with the main compartment so that gas from the main compartment drives the piston. The piston is connected to the drive mechanism so that when the heat pump reaches a steady state, the start up motor can be shut-off, whereupon the piston reciprocates the displacers.

Abstract: A method and apparatus for cooling a heat load in which a pressure vessel is provided to contain a cryogen as a saturated liquid and saturated vapor separated by liquid-vapor interface. The pressure vessel has an inlet adapted to receive a subcooled liquid cryogen and thereby convert it to a saturated liquid through contact with the saturated vapor. A heated overflow tube projects into the pressure vessel and is level, at one end, with the liquid-vapor interface so that any increase in the saturated liquid overflows into overflow tube and is vaporized to form the saturated vapor. The heat transfer and the reintroduction of the vaporized liquid can be effected through forced circulation provided by an ejector. Preferably the pressure vessel is provided with two outlets for discharging the saturated cryogen as saturated liquid or vapor.

Abstract: An apparatus for heating and/or cooling a cab, for example a motor vehicle passenger compartment, communicating with a supply duct for supplying air to the compartment and an exhaust air duct for exhausting air from the compartment. The apparatus includes at least two sorbent reactors provided with a sorbent such as zeolite or the like, each reactor having a reaction chamber. First and second air streams alternately flow through each of the reaction chambers such that while the first air stream is flowing through the first reactor and undergoing adsorption in the selected reaction chamber, the second air stream is simultaneously flowing through the other reactor where desorption takes place, thereby allowing for continuous heating or cooling of the cab.

Abstract: A 250 watt cryocooler employs a Stirling cycle and is capable of maintaining a constant temperature of 77.degree. K. while fitting a standard electronic equipment rack.

Abstract: A column for production of nitrogen by the distillation of air, adapted to produce high purity nitrogen at its head, is associated with an external source of medium purity liquid nitrogen that is fitted with a device for the liquid phase adsorption of carbon monoxide, and with a reservoir for the storage of high purity liquid nitrogen. The column produces medium purity gaseous nitrogen and high purity gaseous nitrogen by direct withdrawals, optionally supplemented by vaporization of liquid nitrogen.

Abstract: A cold head sleeve and superconducting lead assembly including a cryocooler and a tube operatively connected to the cryocooler. A first and second heat station are operatively connected to the cryocooler with a magnet cartridge operatively connected to the first heat station and a thermal shield operatively connected to the second heat station. A thermal connector is operatively connected to the magnet cartridge and thermal shield, and a superconducting lead is operatively connected to the thermal connector.

Abstract: An underground storage system for storing natural gas at a vehicular fueling center which dispenses natural gas to natural gas powered vehicles. Compressed gas is stored in tubes positioned vertically in an elongate casing. The ground hole may be drilled using a conventional water well drilling rig and conventional water well casing and well head may be used to house the storage tubes. The tubes contain the natural gas under about 8,000 psi, which provides a much more rapid dispensing rate. The underground place of the storage tubes is safer than conventional above ground storage systems, as the pressurized containers are insulated by the surrounding earth. Moreover, with the storage tubes underground, vandalism is discouraged and the overall appearance of the fueling center is improved. Because the storage tubes contain large volumes of gas at high pressures, a low power compressor can be used. The low power compressor is inexpensive to operate and maintain and is relatively quiet.

Abstract: A drying apparatus for continuous product webs which contain solvents becoming volatile during drying, the drying apparatus has a dryer having means for transporting a treatment medium, an inlet slot and an outlet slot, and nozzle boxes provided at both sides of the inlet slot and the outlet slot, a cooling tunnel directly connected with the dryer, a combustion chamber for thermal combustion of a solvent which becomes volatile during drying, a first heat exchanger and a second heat exchanger, each having a primary side and a secondary side, a fireplace, a waste gas channel extending from the dryer through the secondary side of the first heat exchanger to an inlet of the combustion chamber and then from an outlet of the combustion chamber through the primary side of the first heat exchanger and the primary side of the second heat exchanger to the fireplace, a suction tube extending from the cooling tunnel, a conduit connected with the nozzle boxes through the secondary side of the second heat exchanger provide

Abstract: An ice forming apparatus to form an ice surface in an ice rink, comprising a water supply conduit located adjacent to the ice rink and connected to a supply of water. A plurality of sprinkler conduits are connected to the water supply conduit. Attached to each sprinkler conduit is a single sprinkler head. Between each sprinkler head and the water supply conduit is a valve operably attached to the sprinkler conduit. One or more valves may be opened so that water sprinkles onto the rink to form a smooth layer of ice.

Abstract: A process and apparatus for extracting water from ash that has been quenched in water bath of an ash discharger and which is expelled from the water bath by means of a discharge ram through a discharge chute includes an improvement wherein the discharge chute of the ash discharger is caused to vibrate. The vibration is provided by a vibration generator, particularly of the unbalanced type.

Abstract: An improved air drying process for a paper machine is disclosed whereby air is impinged directly onto a paper web between top and bottom dryers on an open paper draw. This provides additional drying and machine speed increase due to improved controlling of sheet flutter and improved drying via direct air impingement onto the sheet for all paper grades. The structure provides a radial jet reattachment nozzle to blow air onto the sheet while the paper web is not in contact with either cylinder surface and the fabric or felt. The nozzle stabilizes and supports the sheet to prevent sheet flutter and bulging.

Abstract: Leveling arms for a low profile room air conditioner which are pivotally mounted to a side of an air conditioner housing at an inner end and have an arcuate slotted opening adjacent an outer end. A threaded fastener or clamping bolt is threaded into the air conditioner housing and extends through the arcuate opening. The threaded fastener is loosened to allow the position of the associated arm to be adjusted. The arms have an inner surface providing a series of radial teeth which mesh with like teeth on the outer surface of the housing when the threaded fastener is tightened, thereby retaining the arms in the desired position.

Abstract: A turbo-engine includes a compressor connected by a shaft to a turbine and includes a plurality of disk stages subjected to a thermal gradient, a gas vein in which the gas circulates from upstream to downstream of the compressor, and a mechanism for ventilating the disks so as to limit their thermal gradient. The ventilation mechanism includes at least, a first and a second source for obtaining the gas from the vein, as well as an operating device so as to independently bring the gas obtained from the first source and the gas obtained from the second source to the disks of the compressor and the turbine. The operating device includes a gas pipe coaxial and outside the shaft, wherein between the pipe and the shaft a cylindrical passage for the gas is provided.

Abstract: A desiccant air conditioning system (10) is provided for a passenger compartment (28) of a vehicle. Ambient air, to be eventually conditioned, passes through desiccant material maintained in a desiccant chamber (14) where it loses a portion of its moisture content while its temperature rises because of the release of the heat of vapor condensation. Subsequently, this hot, dry air is passed through a heat exchanger (20) where it is cooled down to a temperature close to the ambient. This very dry, cool air is then humidified by a humidifier (24), becoming cool, moist air, that is introduced into the passenger compartment of the vehicle. Exhaust air (30) from the passenger compartment is further humidified by a humidifier (32), so as to cool it. This cooled, humidified air is then passed through the heat exchanger (20) to cool the hot, dry incoming air.

Abstract: The present invention is directed generally to a method and apparatus for drying a web of paper utilizing impulse drying techniques to provide a unique paper product having a predetermined pattern of delaminated paper fibers. In the method of the invention for drying a paper web, the paper web is transported through a pair of rolls wherein at least one of the rolls has been heated to an elevated temperature. The heated roll is provided with a planar surface having a predetermined pattern formed on the surface of a material having a low K value of less than about 3000 w.sqroot.s/m.sup.2 c and having a relatively low porosity. The material forming the predetermined pattern of the roll surface is preferably selected from the group consisting of ceramics, polymers, glass, inorganic plastics, composite materials and cermets. The remainder of the roll surface has a high K value of greater than about 3000.

Abstract: A compact, lightweight integrated environmental control (IEC) system for a helicopter incorporates in operative combination an environmental control system (ECS) and a nuclear/biological/chemical life support system (NBC LSS). The IEC system includes a refrigerant subsystem, a regenerative heat exchange apparatus, a decontamination subsystem, and an airflow distribution network, and is operative to provide super-cooled, super-dry, decontaminated airflow, in seriatim, directly to left and right mission equipment package bays and the cockpit for cooling of avionics/electronic modules and crew comfort. The IEC system is further operative to directly provide cooled, super-dry, decontaminated airflow for cooling of avionics/electronic modules of the mid mission equipment package bay and for over pressurizing the left and right mission equipment package bays to preclude contaminant infiltration thereof.