摘要:
A heat exchange member comprising a liquid layer and a solid layer capable of conducting a heat exchange reaction with the liquid layer upon their solid-liquid contact at an interface between the solid layer and the solid layer, wherein the solid layer further comprises on a surface thereof which is contacted with the liquid layer a surface coating layer capable of reducing a difference of the vibration between a thermal vibration of the solid and a thermal vibration of the liquid, and the surface coating layer comprises a plurality of fibrous structures arranged on a surface of the solid layer, and a heat exchange apparatus using the heat exchange member.
摘要:
An Al—AlN composite material, a heat exchanger and a related manufacturing method are disclosed. The Al—AlN composite material aluminum is manufactured by melting aluminum to allow a layer of melted aluminum to flow in an area over one surface of an AlN plate under an inactive gas atmosphere after which the layer of melted aluminum is solidified to form an Al plate bonded to the AlN plate. The heat exchanger includes the Al—AlN composite material forming at least part of a cooling medium flow passage with the AlN plate held in thermal contact with a heating body. The manufacturing method comprises melting aluminum to allow a layer of melted aluminum to flow in an area over one surface of an AlN plate under inactive gas atmosphere, and solidifying the layer of melted aluminum to form the Al plate bonded to the AlN plate.
摘要:
A steam engine has a pipe shaped fluid container, a heating and cooling devices respectively provided at a heating and cooling portions of the fluid container, and an output device connected to the fluid container, so that the output device is operated by the fluid pressure change in the fluid container, to generate an electric power. In such a steam engine, an inner radius “r1” of the cooling portion is made to almost equal to a depth “δ1” of thermal penetration, which is calculated by the following formula (1); δ 1 = 2 a 1 ω ( 1 ) wherein, “a1” is a heat diffusivity of the working fluid at its low pressure, and “ω” is an angular frequency of the movement of the working fluid.
摘要:
A heat transport medium includes a single solvent and fine particles 1 of a predetermined material dispersed in the solvent, and transports heat transferred from a heat transfer surface 5. Fine particles 1 includes one or more atoms, and structural substances 3 are arranged on a surface of fine particles 1 to protect it. Furthermore, structural substances 3 having a functional group capable of adsorbing onto fine particles 1 are floated around fine particles 1 in a state where structural substances are not adsorbed onto the fine particle. Also, structural substances 3 adsorbed onto the surface of fine particles 1 are arranged so as to form spaces which enable the floating structural substances 3 to adsorb around the fine particle.
摘要:
A counter-stream-mode oscillating-flow heat transport apparatus improves heat transport capability by imparting oscillatory displacement to a fluid located near a heat-generating element such that the fluid is directed toward the heat-generating element. Turning portions of serpentine flow paths are disposed to face the heat-generating element. The flow paths are stacked in multiple layers in the direction from the heat-generating element to the flow paths, and a plurality of flow paths are disposed adjacent to the heat-generating element in the direction of fluid oscillation.
摘要:
A steam engine has a looped fluid container, in which working fluid is filled. A heating device, a cooling device and an output device are arranged at the fluid container. A lower side valve is provided at a fluid passage of the fluid container between the heating device and the output device. An upper side valve is provided at another fluid passage of the fluid container between the cooling device and the output device. The upper and lower valves are respectively controlled to open and close the respective fluid passages at proper timings, to increase heat efficiency.
摘要:
A stem engine has a fluid container, a heating device and a cooling device. The fluid container has an outer pipe having an upper closed end, and an inner pipe provided in the outer pipe and having a fluid inlet port through which the inside of the inner pipe is operatively communicated with the outside of the inner pipe. The inner pipe has a pressure control device at its lower end, and a fluid injection port at its upper end for injecting the working fluid in the inner pipe into a space defined between the inner pipe and the outer pipe, when the pressure in the inner pipe is increased. The working fluid injected into the space between the inner and outer pipes is heated and vaporized by the heating device, so that volumetric expansion of the working fluid takes place to increase fluid pressure in the fluid container. The vaporized steam is then cooled and liquidized by the cooling device and thereby the volumetric contraction takes place, so that the fluid pressure is decreased. By repeating the above volumetric expansion and contraction of the working fluid, the pressure change is given to the working fluid in the fluid container.
摘要:
A liquid pump for circulating working fluid (water) in a Rankine cycle comprises a U-shaped fluid vessel having a bending pipe portion and a pair of straight pipe portions, wherein a heating device and a cooling device are provided at one of the straight pipe portions for heating and cooling the water in the fluid vessel. The liquid pump further has a discharge pipe portion and an inlet pipe portion, and check valves are respectively provided in the discharge and inlet pipe portions. The water is vaporized by a heating operation of the heating device to increase pressure of the working fluid in the pump, so that the working fluid is discharged. The vaporized working fluid is then cooled down by the cooling device to decrease the pressure of the working fluid in the pump, so that the working fluid is sucked into the pump.
摘要:
A linear compressor, comprises a fixed member formed with a hermetically sealed compression chamber, a movable member axially movably received in the compression chamber of the fixed member, a plurality of resilient members each intervening between the fixed member and the movable member, driving means for driving the movable member, damping means for damping vibrations of the fixed member, the damping means including a retaining member fixedly connected to the fixed member and a weight member axially movably supported by the retaining member, first detecting means for detecting a displacement of the movable member, second detecting means for detecting a displacement of the weight member, and controlling means for controlling the driving means to have the movable member perform a reciprocally linear motion to ensure that the vibrations of the fixed member are damped by the damping means.
摘要:
To improve refrigerating efficiency by preventing working fluid flowing into a pulse tube from a high-temperature end side thereof from reaching a cooling part in a cryogenic refrigerator, a ball-shaped travel member which has almost the same cross-section as the cross section of the pulse tube is inserted into the pulse tube and moves together with the working fluid therein. In this arrangement, when the working fluid begins to flow into the pulse tube from a flow rate regulation part on the high-temperature end side of the pulse tube, the travel member located within the pulse tube moves toward a cooling part together with the working fluid flowing in the pulse tube. Since the travel member has almost the same cross-section as the cross-section of the pulse tube, there is no possibility that the working fluid flows through between the inner wall of the pulse tube and the travel member. Therefore, the travel member can reliably prevent the working fluid flowing into the high-temperature end of the pulse tube from reaching the cooling part, and thereby the refrigerating efficiency of the pulse tube refrigerator can be improved.