摘要:
Methods and systems are provided for a phase change material (PCM) integrated radiator. In one example, a method may include adjusting a radiator control valve into a first position to flow coolant only through a first zone of a radiator containing phase change material (PCM) and not through a second zone of the radiator not containing phase change material. The method may further include adjusting the radiator control valve into a second position to flow coolant only through the second zone of the radiator and not the first zone.
摘要:
A turbomachine includes a compressor configured to compress air received at an intake portion to form a compressed airflow that exits into an outlet portion. A combustor is operably connected with the compressor, and the combustor receives the compressed airflow. A turbine is operably connected with the combustor, and the turbine receives combustion gas flow from the combustor. The turbine has a turbine casing. A cooling system is operatively connected to the turbine casing. The cooling system includes a plurality of heat pipes attached to and in thermal communication with the turbine casing. The plurality of heat pipes are operatively connected to one or more manifolds. The plurality of heat pipes and the one or more manifolds are configured to transfer heat from the turbine casing to a plurality of heat exchangers.
摘要:
A work vehicle with a vehicle cooling system that cools a vehicle engine. The work vehicle also includes a service pack cooling system configured to cool a service pack engine of a service pack. The work vehicle includes valving fluidly coupling the vehicle cooling system to the service pack cooling system. The valving is configured to allow independent or integrated operation of the vehicle cooling system and the service pack cooling system. The valving is also configured to permit the vehicle cooling system and the service pack cooling system to operate at different pressures.
摘要:
In an internal combustion engine having a system for utilizing the waste heat from the internal combustion engine via the Clausius-Rankine cycle, a system includes a circuit having lines with a working medium, a working medium pump, a vaporizer-exhaust gas heat exchanger, and a vaporizer-EGR heat exchanger, an expander, and a condenser for liquefying the vaporous working medium. The line for the working medium is run from the condenser to the vaporizer-EGR heat exchanger so that the working medium, after flowing through the condenser, first flows through the vaporizer-EGR heat exchanger, and the line for the working medium is run from the vaporizer-EGR heat exchanger to the vaporizer-exhaust gas heat exchanger so that the working medium, after flowing through the vaporizer-EGR heat exchanger, first flows through the vaporizer-exhaust gas heat exchanger.
摘要:
A cooling device for an internal combustion engine of a motor vehicle has a current-generating component that is embodied as a thermoelectric generator and has a side facing a cooling stream passing through the cooling device. The cooling stream dissipates heat generated by an operating unit of the motor vehicle. The cooling device is embodied as a vehicle radiator. The current-generating component is integrated into the vehicle radiator. The current-generating component and a cooling web of the vehicle radiator form a common assembly.
摘要:
A cooling system for a liquid cooled internal combustion engine having coolant passages and a heat exchanger selected to operate the engine cooling system in the region of nucleate boiling. A sensor detects the presence of nucleate boiling and a variable volume chamber has a flexible diaphragm urged on one side by controlled air pressure and responsive to the sensor maintain the coolant system pressure at a level maintaining optimum nucleate boiling to increase heat flux from the engine and reduce overall size of the system.
摘要:
A personal watercraft is disclosed with a hull, a seating assembly, and a four stroke internal combustion engine below the seating assembly. The engine has at least one intake valve for each of the combustion cylinder chambers, at least one exhaust valve for each of the combustion cylinder chambers, and a valve actuation assembly located in a cylinder head for operating the intake and exhaust valves. At least one air intake passageway is operatively coupled to the combustion cylinder chambers through the intake valves. An air intake manifold is connected to the cylinder head and operatively connected to the at least one air intake passageway. The engine also has a supercharger for boosting air to the air intake manifold. The watercraft also includes a propulsion unit, operatively coupled to the crankshaft, which is located on one end of the two ends of the crankcase.
摘要:
A device containing a far infrared radiation-emitting material over which fuel or other fluids such coolant fluid can flow such that far infrared radiation is emitted into the liquid fuel or coolant resulting in the reduction of toxic exhaust gas and the improvement of the combustion efficiency. The compositions includes a material that can emit far infrared radiation, such as magnetite or quartz-feldspar porphyry. Generally, the far infrared radiation emitting material is contained in a matrix that radiation being emitted to disperse out of the matrix and into the surrounding environment. The preferred matrix is a glass composition even though other materials such as plastics may be used. Preferably the glass composition is in the form of glass beads, which can be any shape but preferably pellets or balls. Also the far infrared radiation-emitting material can be embedded in other materials such as clear plastic, clear silicone or clear fiberglass beads.
摘要:
An anti-explosion and anti-fire system is disclosed, the system comprising an encapsulant disposed to cover high temperature surface portions of a component; a conduit in thermal connection with the encapsulant; and a heat transfer fluid disposed within the conduit. A diesel engine is disclosed for an underground mine, the engine comprising an encapsulant disposed to cover high temperature surface portions of a cylinder head; a conduit in thermal connection with the encapsulant; and a heat transfer fluid disposed within the conduit. A method for encapsulating high temperature surface portions of a cylinder head is disclosed, the method comprising positioning a conduit adjacent the head; positioning an encapsulant in thermal connection with the head and the conduit; and transferring heat from high temperature portions to prevent gasses, coal dust, fuel, oils or other combustible material in an underground mine from contacting portions at temperatures above an explosion or fire safety limit.
摘要:
Heat transfer in coolant circuits, as in an internal combustion engine for example, can be beneficially enhanced by maintaining the coolant in a nucleate boiling state, but undesirable transitions to a film boiling state are then possible. The disclosed coolant circuit has selected surface(s) that have a tendency to experience high heat flux in comparison to adjacent surfaces in the coolant circuit. These surfaces are provided with a surface configuration, such as a matrix of nucleation cavities, which has a tendency to inhibit a change in boiling state. The surface configuration can be provided on the parent coolant circuit surface or on a surface of an insert positioned in the coolant circuit. Thus, transitions to film boiling can be effectively avoided at locations in the coolant circuit that are susceptible to such transitions.