Abstract: The present invention relates to a lawn mower with a handle assembly comprising a lower frame and an upper frame which can be rotated to adjust its position with respect to the lower frame.

Abstract: A synthetic fiber cable has the strands of a strand layer mutually spaced apart. With the mutual spacing, the strands of the outer strand layer can move radially in the direction of the cable center and exert a radial pressure on the strands of the first inner strand layer. The radial pressure is passed on from the strands of the first inner strand layer to the strands of the second inner strand layer. The radial pressure is passed on from the strands of the second inner strand layer to the core strand. The radial pressure increases inwardly from strand layer to strand layer. The soft cable sheathing does not act as a support between the strands in circumferential direction.

Abstract: A roller element (10) is provided which has a central body (1) and a roller unit (2). The roller unit (2) is mounted so as to circulate on a non-circular race (21) about the central body (1) and so as to be mobile with respect to the central body (1) by the rolling movement of the rollers (3) of the roller unit (2) on the central body (1). The rollers (3) are configured as balls or substantially cylindrical elements. A peripheral surface of the rollers (3), for a substantial part, is shaped as a rolling surface that corresponds to the central body (1) and for rolling off on the central body (1). The elements of the roller unit (2) have play in relation to one another and/or the roller unit has play regarding its mobility in relation to the central body (1).

Abstract: Disposed at or toward the trailing edge of one or more nozzles associated with a jet engine are injection ports which can selectively be made to discharge a water stream into a nozzle flow stream for the purpose of increasing turbulence in somewhat of a similar fashion as mechanically disposed chevrons have done in the known art. Unlike mechanically disposed chevrons of the known art, the fluid flow may be secured thereby increasing the engine efficiency. Various flow patterns, water pressures, orifice designs or other factors can be made operative to provide desired performance characteristics.

Abstract: A method of operating a turbine engine includes providing at least one combustor having a chamber defined therein. The assembly includes at least one combustor wall defining the chamber and a first fluid passage defining a first fluid inlet within the wall. The first fluid passage is coupled in flow communication with the chamber and is configured to inject a first fluid stream. The assembly further includes at least one second fluid passage defining at least one second fluid inlet within the wall. The second fluid inlet is adjacent to the first fluid inlet and is coupled in flow communication with the chamber. The method also includes injecting the first fluid stream and injecting the second fluid stream into the chamber at an oblique angle with respect to the first fluid stream, thereby intersecting and mixing the second fluid stream with the first fluid stream.

Abstract: A quick change connection is provided for attaching a bracket and liner subassembly to convergent flaps and seals in an adjustable nozzle for a gas turbine engine. A threaded attachment member has a t-shaped head that is secured to prevent rotation by a washer. The washer is held in place in the convergent flaps and seals by spring fingers in a slot. By utilizing the washer, a simple threaded connection can be utilized even though the threaded attachment member must extend to a radially outer surface of the convergent flaps and seals, while a nut is threaded onto the threaded attachment member radially inwardly of the convergent flaps and seals. The washer prevents rotation of a head of the threaded attachment member, and thus allows the nut to be easily tightened to secure the components. This also facilitates maintenance as the threaded nut can be easily removed from the threaded attachment for replacement.

Abstract: The cowling is used around a turbine exhaust case in gas turbine engine. It comprises a substantially conical wall with a longitudinal split forming opposite ends. Each end is directly unconnectable to each other.

Abstract: A gas turbine engine has the convergent flaps and seals of an adjustable cross-sectional area nozzle connected to associated liners with a thermally compliant bracket. The bracket includes spaced feet with an intermediate notch spaced away from the liner. In this manner, a temperature gradient along the liner can be easily compensated at the connection of the bracket to the liner by adjustment within the notch. In other features, the bracket is riveted to the liner, providing further resistance to thermal expansion due to temperature gradiations.

Abstract: An improved engine construction is provided. The engine construction comprises a combustion chamber, a smooth wall nozzle, and a transition zone between the chamber and the smooth wall nozzle. The transition zone has a coolant system which includes a manifold formed from a non-copper material through which a coolant flows. In a high heat transfer embodiment, the transition zone includes an additional manifold formed from a copper based material.

Abstract: A close-coupled catalytic converter according to an exemplary embodiment of the present invention includes: a front catalyst and a rear catalyst that are cylindrically shaped, coated with a metal catalyst, and disposed separately from each other; and a catalyst cover including an upper shell and a lower shell, and the upper and lower shells are semi-cylindrically shaped, wherein an end of the catalyst cover is connected with a front muffler pipe that is connected with an exhaust manifold and the other end of the catalyst cover is connected with a rear muffler pipe that emits an exhaust gas. The structures of a shell for a catalyst and for configuration of an oxygen sensor are simplified so that manufacturing process and cost are reduced and purifying performance is enhanced. Since back pressure is reduced, engine performance is enhanced.

Abstract: A power system is provided having a power source operationally coupled to a generator. The power system also includes an exhaust passage having at least one after-treatment device configured to release exhaust from the power source into the atmosphere. In addition, a controller is configured to determine at least one exhaust passage condition indicative of an exhaust temperature and operate the generator in response to the determination.

Abstract: There is provided a method and apparatus for controlling operation of an internal combustion engine, comprising controlling engine torque during regeneration of an exhaust aftertreatment system. This comprises controlling post-injection of fuel into a combustion chamber effective to regenerate an exhaust aftertreatment device. Main fuel injection into each combustion chamber and boost are selectively controlled effective to maintain engine output torque.

Abstract: An exhaust purification device has a NOx catalyst that occludes NOx contained in exhaust gas at a lean air fuel ratio and that purifies (reduces) and discharges the occluded NOx at a rich air fuel ratio. The device performs full purge for discharging substantially an entirety of the occluded NOx at once based on establishment of an execution condition of the full purge to recover exhaust purification performance of the NOx catalyst. The device has a program for performing partial purge for discharging only part of the occluded NOx before the execution of the full purge. The device consecutively and repeatedly performs the partial purge except for the period in which the full purge is performed.

Abstract: The exhaust gas temperature control method includes executing an exhaust gas temperature control to raise an exhaust gas temperature upon determining that a purificatory performance of an exhaust gas purification device of an engine has declined. The step of executing of the exhaust gas temperature control includes performing a first fuel injection control in which a timing of a main fuel injection is retarded and a post fuel injection is executed after the main fuel injection when the internal combustion engine is operating in the first operating region, and performing a second fuel injection control in which the timing of the main fuel injection is retarded and an execution of the post fuel injection after the main fuel injection is prohibited when the internal combustion engine is operating in the second operating region.

Abstract: A method of controlling an exhaust treatment system includes sensing a temperature representative of a catalyst material temperature at start-up of a power source and comparing the sensed temperature to a threshold temperature. The method also includes igniting a regeneration device of the exhaust treatment system in response to the comparing. The regeneration device is disposed upstream of the catalyst material. The method further includes operating the regeneration device at a target temperature.

Abstract: A filter for engine exhaust gases includes a filter media having an internal and external surface. A plurality of molecules of a fluid catalyst are attached to at least the internal and external surface of the filter media. The molecules of the fluid catalyst are configured to donate an oxygen atom to soot particles to activate the soot particles for regeneration.

Abstract: An aftertreatment burner for an exhaust treatment device is disclosed. The aftertreatment burner may have a mounting member, and a canister connected to the mounting member to form a combustion chamber. The aftertreatment burner may also have a fuel injector disposed within the mounting member to selectively inject fuel into combustion chamber, and an air supply line configured to supply air to the combustion chamber. The aftertreatment burner may further have an igniter disposed within the mounting member to ignite the fuel/air mixture, and a thermal couple configured to detect the ignition.

Abstract: A transmission is provided for a mobile machine. The transmission may have a plurality of available gear combinations selectively engaged to produce multiple stepped output ratios. The transmission may also have a first fluid pump and a second fluid pump. The first fluid pump may be configured to pressurize a first flow of fluid. The second fluid pump may have variable displacement to pressurize a second flow of fluid. At least one of the first and second flows of fluid may be directed to cause selective engagement of the plurality of available gear combinations.

Abstract: The present invention overcomes drawbacks whereby the supply of pressure oil to a hydraulic cylinder for operating a ground working device is temporarily cut, and operation of the ground working device is temporarily stopped when a control valve for the travel device is operated while a control valve for the ground working device is being operated. When control valves (V4, V5) for the travel devices are operated during operation of control valves (V6, V7, V8) for the ground working device, and a first flow channel switching valve (V12) is switched from an operating position (31) to a travel position (34), a second flow channel switching valve (V13) is switched from a non-feeding position (39) to a feeding position (40) before or at the same time as the first flow channel switching valve (V12).

Abstract: The invention provides a method for transferring heat by conduction to the internal heat acceptor of an external combustion engine. Fuel and air are introduced and mixed to form an air/fuel mixture. The air/fuel mixture is directed into a catalytic reactor that is positioned substantially adjacent to the heater head. Heat is transferred via conduction from the catalytic reactor to the heater head and the catalytic reaction products are exhausted.

Abstract: A method for coordinating control of exhaust gas recirculation (18) in a turbocharged internal combustion engine (10) with control of engine boost. When actual boost deviates from a desired boost set-point developed by a boost control strategy (32), such as during a sudden acceleration or deceleration, the EGR control strategy (34) provides a prompt adjustment of exhaust gas recirculation (EGR) seeking to null out the boost disparity.

Abstract: Systems and methods for regasifying liquefied natural gas (LNG) are provided. The LNG is regasified by transferring heat from a steam methane reforming reaction to the LNG. In one embodiment, heat is transferred to the LNG from a synthesis gas produced in a steam methane reforming reaction. In another embodiment, heat is transferred to the LNG from a flue gas provided from a furnace heating a steam methane reforming reactor. By using excess heat from the steam methane reforming process, less energy may be consumed to regasify LNG.

Abstract: A system to utilize exhaust generated by a fuel consuming device including a plenum situated to receive the exhaust from the fuel consuming device and a stack in fluid communication with the plenum. The stack is adapted to allow the exhaust to exit the plenum in one instance and ambient air to enter the plenum in another instance. The system also includes a thermal device adapted to draw a fluid flow from the plenum for operation of the thermal device. The fluid flow includes at least one of the exhaust from the fuel consuming device and the ambient air.

Abstract: An extended flashback annulus (520) is formed between an exterior surface (506) of a shroud or casing (508) associated with a main swirler assembly inner body (500) or other fuel/air mixing device and the inner surface (514) of an annulus casting (510) which are in operational relationship with one another in a gas turbine combustor assembly. The extended flashback annulus (520) is capable of forming an extended protective cylindrical air barrier (550) that extends farther into the combustion zone, this barrier being more robust and providing for the reduction or prevention of flashback to the baseplate and other heat-susceptible upstream components.

Abstract: A method of operating a gas turbine engine is provided. The method includes discharging pilot fuel into a combustion chamber from a nozzle through at least one pilot fuel outlet defined in a tip of the nozzle, discharging steam from the nozzle through a plurality of steam outlets that are spaced circumferentially about the plurality of pilot fuel outlets, and discharging primary fuel from the nozzle through a plurality of primary fuel outlets that are circumferentially aligned with the plurality of steam outlets. To facilitate mixing the primary fuel with the steam, the primary fuel is discharged from the nozzle tip at an oblique angle with respect to a centerline extending through the nozzle tip.

Abstract: A method for operating a combustion system is provided. The method includes coupling the main swirler to the pilot swirler such that the main swirler substantially circumscribes the pilot swirler, supplying fuel to a first fuel circuit defined in the main swirler, and inducing swirling to the supplied fuel via a first set of swirler vanes positioned within the main swirler. The method also includes supplying fuel to a second fuel circuit defined in the main swirler, inducing swirling to the supplied fuel via a second set of swirler vanes positioned within the main swirler, each of the second set of swirler vanes comprising at least one second fuel passage defined therein, and coupling a shroud in flow communication to at least one of the first set of swirler vanes and the second set of swirler vanes, the shroud comprising at least one third fuel passage defined therein.

Abstract: A fuel/oxidant premixing device for a gas turbine includes an annular array of Coanda profiled fuel injected airfoils configured to receive a fluid stream containing the oxidant, wherein each one of the airfoils comprises a leading edge, a trailing edge and a fuel injection opening configured for introducing fuel at about the leading edge to provide a Coanda effect. Also disclosed herein are methods for its operation.

Abstract: Conventional swozzle-type burners are modified so as to be capable of selectively running on liquid fuel without requiring water injection for NOx abatement or dedicated air supply for atomizing liquid fuel.

Abstract: A magnetic refrigerating device includes: a magnetic refrigerating unit including a magnetic material “A” exhibiting a magneto-caloric effect that the temperature of the material “A” is increased by the application of a magnetic field and the temperature of the material “A” is decreased by the removal of a magnetic field, a magnetic material “B” exhibiting a magneto-caloric effect that the temperature of the material “B” is decreased by the application of a magnetic field and the temperature of the material “B” is increased by the removal of a magnetic field, a heat conductive material “a” exhibiting higher heat conductivity under the application of a magnetic field and lower heat conductivity under the removal of a magnetic field, and a heat conductive material “b” exhibiting lower heat conductivity under the application of a magnetic field and higher heat conductivity under the removal of a magnetic field, wherein the magnetic refrigerating unit is configured so as to include at least one layered structure

Abstract: A thermoelectric air conditioning unit and a thermoelectric air conditioner containing the unit; the unit includes thermoelectric component and heat exchanger; the heat exchanger is provided with heat transfer plate; multiple heat sink fins are disposed on one side of the heat transfer plate and the other side of the heat transfer plate is adhered to the thermoelectric component; another side of the component is attached with a water tank; the component is secured at where between the exchanger and the tank; the exchanger and the tank are respectively coated on one side an insulation heat transfer layer; the air conditioner is provided with an outer casing containing multiple thermoelectric air conditioning units; a fan is fixed at the outer casing; heat loss is reduced for 1˜2 ? due to that the coated layer that substitutes a heat transfer plate so to upgrade energy efficiency ratio of the thermoelectric air conditioning unit and that of the thermoelectric air conditioner containing the unit.

Abstract: A heat exchanger and an indoor thermoelectric air conditioner containing the heat exchanger, the heat exchanger includes a heat transfer plate provided with an elevation area for the plate to be erected on bottom in outer casing of the air conditioner; multiple heat sink fins parallel with one another are fixed on one side of the plate at where abutted to the elevation area; free ends of those fins are inclined downward in a direction facing the elevation area; a fan blows the air from both sides of each fin to create airway between any two abutted fins; water of vapors in the air condensed on surface of each fin fall off downward due to central gravity thus to separate waterway from airway to warrant well-facilitate air vane of the air conditioner; and outer surface of each fin being applied with a hydrophilic film to frustrate condensation to further insurance of the well-facilitated air vane.

Abstract: A heat dissipating device for an electronic element includes a thermoelectric cooler (TEC) attached to the heat conductor, a heat sink attached on the TEC, a fan attached on the heat sink, and a temperature control circuit. The TEC absorbs heat from the electronic element, and transfers the heat to the heat sink. The temperature control circuit receives a rotation speed signal from the fan, when rotation speed of the fan is higher than a given level, the temperature control circuit controls the TEC to cool the electronic element, when rotation speed is lower than the given level, the temperature control circuit controls the TEC to stop cooling the electronic element.

Abstract: A method and device for filling a container with liquid gas from a storage tank includes removing the liquefied gas from the storage tank and feeding it to a container via a liquid feed line through use of a delivery system. The gas is compressed in the container and is removed from the container in its gaseous state and is at least partially liquefied by cooling in a heat exchanger. The at least partially liquefied gas is fed into the liquid feed line at the suction end of the delivery device.

Abstract: In a communication network system which unifies a system communication network and a master system communication network, each of a plurality of controlled devices is configured to transmit status data to a master controller and receive control data from the master controller so that the controlled device is operated based on the control data. The master controller comprises a control unit configured to receive status data of the controlled devices and transmit control data to the controlled devices, the control unit being configured to transmit the status data to a system controller and receive the control data from the system controller. The system controller comprises a second control unit configured to receive the status data of the controlled devices from the master controller, perform a processing operation based on the status data, and transmit a result of the processing operation to the master controller as the control data.

Abstract: What is disclosed is the idea and method for utilizing wasted water that is, a by product of the chillers and air conditioners, especially in humid regions of the planet to provide water for drinking and other potable water applications. This water is generated at the location of the air inlet chiller units of central air conditioning units that are placed on the roofs of high rises and on central raised locations. Today this condensed water is a problem and is discarded down the drain. The placement and location of central AC units, on top of buildings and industrial complexes allow water to be collected and supplied by gravity, to the usage area. By providing a collection tank with filtration and preferably UV irradiation capability, the collected water can be made potable with no further treatment. Such a scheme will reduce the usage of piped water in the cities.

Abstract: A problem to be solved by the present invention is that the temperature of a refrigerant discharged from a compression section can be detected more exactly without being influenced by variable factors existing around the compression section. In a rotary compressor 1 having a motor 6 and a compression section 3 provided in a closed container 2, and also having a discharge pipe 26 provided in an upper part of the closed container 2 to discharge a refrigerant compressed by the compression section 3 to the outside of the closed container 2, a refrigerant discharge part 462 for discharging the refrigerant compressed by the compression section 3 toward the inner peripheral surface of the closed container 2 is provided, and a discharge temperature sensor 20 for detecting the discharge temperature of compressed refrigerant is arranged in a portion opposed to the refrigerant discharge part 462 on the outer peripheral surface side of the closed container 2.

Abstract: A refrigeration system can incorporate a cooling-liquid injection system that can inject a cooling liquid into an intermediate-pressure location of the compressor. The cooling liquid can absorb the heat of compression during the compression of the refrigerant flowing therethrough. The refrigeration system can include an economizer system that injects a refrigerant vapor into an intermediate-pressure location of the compressor in conjunction with the injection of the cooling liquid. A refrigeration system can include a liquid-refrigerant injection system that can inject liquid refrigerant into an intermediate-pressure location of the compressor. The injected liquid refrigerant can reduce the discharge temperature of the refrigerant. The liquid-refrigerant injection system can be used with the cooling-liquid injection system and/or the economizer system.

Abstract: An automobile solar air-conditioning control system includes a solar energy supply device, a control device, a power device and an automobile air-conditioning system. When the engine of the vehicle stops running, after the driver presses a button of the control device, the signals output by the control device and the power output by the solar energy supply device are used to actuate the power device to drive a mechanical compressor of the automobile air-conditioning system to operate. As a result, the automobile air-conditioning system generates and introduces cold air into the vehicle, thereby to maintain the temperature in the vehicle in a suitable range.

Abstract: A solar energy air-conditioning auxiliary system includes a solar power supply, a voltage detector, a motor, a motive power allocation unit, an automobile air-conditioning system and an engine. While an automobile is being driven, the motive power allocation unit allocates and controls a motor power with a lower proportion of motor output and a higher proportion of engine output to start the operation of the automobile air-conditioning system, after the motive power allocation unit receives a signal detected by the voltage detector and the voltage of a cell is considered sufficient. The automobile air-conditioning system is operated completely by the motive power outputted by the engine to drive the automobile air-conditioning system to operate by a motive power output with the relative proportion.

Abstract: An automobile switchable solar air-conditioning auxiliary system includes a solar energy supply device, a control device, a power device and an automobile air-conditioning system. During the running of a vehicle, the control device is actuated to switch to the solar energy supply device to supply the necessary electricity, whereby a motor drives a mechanical compressor of the automobile air-conditioning system to operate and thus the automobile air-conditioning system generates and introduces cold air into the vehicle. When the electricity in the solar energy supply device is insufficient, the control device automatically switches to the engine to drive the compressor. In this way, the solar energy is used as an auxiliary power supply for the automobile air-conditioning system.

Abstract: The present invention relates to a mobile air conditioner which comprises an insulated housing having a cooled air outlet and a heated air outlet, an evaporator located in the said housing, a condenser, an electrical fan having an air chamber, and a reservoir for collecting condensed water formed on the evaporator. The evaporator is located between the air chamber and cooled air outlet; while the condenser is located between the air chamber and heated air outlet. The cavity of the said reservoir is in fluid connection with a drain channel which has a drain meatus located in the air-discharge passage extended from the air outlet of the air chamber to the condenser. The condensed water from the reservoir to the drain channel can be atomized into tiny drops by rapid air flow from the air chamber. The tiny drops are blown through the drain channel onto the condenser for being heated and onto the evaporator for being cooled, then flowing into the reservoir at last.

Abstract: A refrigerator that prevents air from flowing between two storage chambers through drain pipes draining defrosted water is provided. The refrigerator includes a main body including a first cooling chamber generating cool air supplied to a first storage chamber, and a second cooling chamber generating cool air supplied to a second storage chamber; a first drain pipe draining water collected from the first cooling chamber to a water collecting basin provided at an outside of the first and second cooling chambers; and a second drain pipe draining water collected from the second cooling chamber to the water collecting basin. The first drain pipe includes an insertion portion, which is inserted into the second drain pipe and is extended to the water collecting basin.

Abstract: A microchannel heat exchanger is provided that is configured to drain condensate out of the microchannel heat exchanger. The microchannel heat exchanger has tube sections that are positioned at an angle with respect to a horizontal plane when the microchannel heat exchanger has a vertical orientation. The fins between the tube sections can be positioned perpendicular to the angled tube sections or can be positioned perpendicular to the horizontal plane.

Abstract: A refrigerated container and an associated method for closing or opening a removal cross-section of a refrigerated container by at least one laterally guided and displaceable cover element are known. The closing and/or opening procedure is initiated automatically using a closing and/or opening device after a specific time span and either automatically ended by reaching the closed position or the open position or automatically interrupted by a force component of an interfering force which counteracts the particular lateral movement and exceeds a threshold value. It is disclosed here that a frictional connection and/or form fit between the cover element and/or the refrigerated container and/or the closing and/or opening device is advantageously neutralized outside the time of the automatic closing and/or opening procedure, to thus allow manual displacement of the cover element without having to apply an additional manual force corresponding to the threshold value.

Abstract: A drink bottle and method of manufacturing same.

Abstract: A system for removably hanging a storage container from a surface generally comprises a first coupler and a second coupler. The first coupler includes an elongated member that is one of attached to and formed integral with the surface. The second coupler is one of attached to and formed integral with the storage container. The second coupler removably engages the first coupler such that the storage container is removably hung from the surface.

Abstract: A heat dissipating system includes: a heat-absorbing unit having at least one cavity body adapted to contact a heat source, and a working fluid received in the cavity body; a condenser to condense the working fluid; and a tubing unit connected fluidly to the condenser and the heat-absorbing unit. The working fluid flows through the tubing unit to circulate from the condenser to the heat-absorbing unit by gravity and from the heat-absorbing unit to the condenser by natural convection. The tubing unit forms a closed circulating loop with the heat-absorbing unit and the condenser.

Abstract: CO2 refrigeration circuit (2) for circulating a refrigerant in a predetermined flow direction, comprising in flow direction a hear-rejecting heat exchange, (4), a receiver (10) having a liquid portion (12) and a flash gas portion (14), and subsequent to the receiver (10) a medium temperature loop (20) and a low temperature loop (24), wherein the medium and low temperature loops (24) each comprise in flow direction an expansion device (26, 28), an evaporator (30, 32) and a compressor (46, 38), the refrigeration circuit (2) further comprising a liquid line (16) connecting the liquid portion (12) of the receiver (10) with at least one of the medium and low temperature loops (20, 24) and having an internal heat exchanger (54), and a flash gas line (50) connecting the flash gas portion (14) of the receiver (10) via the internal heat exchanger (54) with the inlet of the low temperature compressor (46), wherein the internal heat exchanger (54) transfers in use heat from the liquid flowing through the liquid line (16

Abstract: A refrigeration system can incorporate a liquid-injection system that can provide a cooling liquid to an intermediate-pressure location of the compressor. The cooling liquid can absorb the heat of compression during the compression of the refrigerant flowing therethrough. The refrigeration system can include an economizer circuit that injects a refrigerant vapor into an intermediate-pressure location of the compressor in conjunction with the injection of the cooling liquid. The incorporation of the vapor injection in conjunction with the cooling-liquid injection can advantageously increase the cooling capacity and/or efficiency of the refrigeration system and the performance of the compressor.

Abstract: A process and apparatus for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream is disclosed. The stream is cooled and divided into first and second streams. The first stream is further cooled to condense substantially all of it and is thereafter expanded to the fractionation tower pressure and supplied to the fractionation tower at a first mid-column feed position. The second stream is expanded to the tower pressure and is then supplied to the column at a second mid-column feed position. A distillation stream is withdrawn from the column below the feed point of the second stream and compressed to higher pressure, and is then directed into heat exchange relation with the tower overhead vapor stream to cool the distillation stream and condense substantially all of it, forming a condensed stream. At least a portion of the condensed stream is directed to the fractionation tower as its top feed.