60 results about "Flow boiling" patented technology

A heat sink, and cooled electronic structure and cooled electronic apparatus utilizing the heat sink, are provided. The heat sink is fabricated of a thermally conductive structure which includes one or more coolant-carrying channels and one or more vapor-condensing channels. A membrane is disposed between the coolant-carrying channel(s) and the vapor-condensing channel(s). The membrane includes at least one vapor-permeable region, at least a portion of which overlies a portion of the coolant-carrying channel(s) and facilitates removal of vapor from the coolant-carrying channel(s) to the vapor-condensing channel(s). The heat sink further includes one or more coolant inlets coupled to provide a first liquid coolant flow to the coolant-carrying channel(s), and a second liquid coolant flow to condense vapor within the vapor-condensing channel(s).

Cooling methods are provided for facilitating pumped immersion-cooling of electronic components. The cooling method includes: providing a housing forming a compartment about one or more components, and providing a supply manifold, a return manifold, and coupling a coolant loop coupling in fluid communication the supply and return manifolds and the housing. Coolant flowing through the coolant loop flows through the compartment of the housing and, at least partially, immersion-cools the component(s) by flow boiling. A pump facilitates circulation of coolant within the loop, and a coolant bypass line is coupled between the supply and return manifolds. The return manifold includes a mixed-phase manifold section, and the bypass line provides coolant from the supply manifold directly to the mixed-phase manifold section. Coolant flows from the coolant bypass line into the mixed-phase manifold section in a direction counter to the direction of any coolant vapor flow within that manifold section.

The invention discloses a multi-factor width parameter nanofluid heat transfer characteristic experimental system and an experimental method. The system comprises three parts, namely an experimental loop, a pressure control loop and a cooling loop, wherein the experimental loop is composed of an ultrasonic oscillator, a circulating main pump, a heat regenerator, a mass flow meter, a preheating section, an experimental section, a data acquisition system and an electric heating system; the pressure control loop is composed of a high-pressure nitrogen and gas-liquid header and a safety valve; andthe cooling loop is composed of a cooling tower, a circulating pump and a cooling jacket. According to the experimental system, single-phase heat convection, flow boiling heat exchange and critical heat flux experimental researches under multi-factor and width parameter conditions can be performed aiming at nanofluid of different components under the condition that the stability of the nanofluidis maintained. The invention further provides an experimental method. The stability of the nanofluid is ensured, the influence of a dispersing agent or other additives is avoided, and the influence factors and mechanisms of the single-phase heat convection, flow boiling heat exchange and critical heat flux of the nanofluid can be conveniently researched.

A method is provided for facilitating extraction of heat from a heat-generating electronic component. The method includes providing a heat sink, the heat sink including a thermally conductive structure which has one or more coolant-carrying channels and one or more vapor-condensing channels. A membrane is disposed between the coolant-carrying channel(s) and the vapor-condensing channel(s). The membrane includes at least one vapor-permeable region, at least a portion of which overlies a portion of the coolant-carrying channel(s) and facilitates removal of vapor from the coolant-carrying channel(s) to the vapor-condensing channel(s). The heat sink further includes one or more coolant inlets coupled to provide a first liquid coolant flow to the coolant-carrying channel(s), and a second liquid coolant flow to condense vapor within the vapor-condensing channel(s).

A thermal management system (201) is disclosed which comprises (a) a liquid medium (207), (b) a heat generating device (203) disposed in said medium, (c) a heat transfer device (205) in thermal contact with said heat generating device, said heat transfer device comprising a thermally conductive material and having a channel (213) defined on a surface thereof, and (d) a synthetic jet ejector (223) adapted to direct a jet of the liquid medium along said channel.

Cooling apparatuses and methods are provided for facilitating pumped immersion-cooling of electronic components. The cooling apparatus includes a housing forming a compartment about one or more components, a supply manifold, a return manifold, and a coolant loop coupling in fluid communication the supply and return manifolds and the housing. Coolant flowing through the coolant loop flows through the compartment of the housing and at least partially immersion-cools the component(s) by flow boiling. A pump facilitates circulation of coolant within the loop, and a coolant bypass line is coupled between the supply and return manifolds. The return manifold includes a mixed-phase manifold section, and the bypass line provides coolant from the supply manifold directly to the mixed-phase manifold section. Coolant flows from the coolant bypass line into the mixed-phase manifold section in a direction counter to the direction of any coolant vapor flow within that manifold section.

The invention discloses a flow boiling critical heat flux experimental device under super-gravity, which is mainly used for measuring the critical heat flux density of flow boiling under the super-gravity. The flow boiling critical heat flux experimental device under the super-gravity comprises a fluid circulation module, a critical heat flux measurement module and a super-gravity simulation platform; and the fluid circulation module is fixed on the super-gravity simulation platform. Super-gravity of different sizes and directions is realized by adjusting a motor frequency and an arrangement form of experimental pipes. The experimental pipe is heated through a direct energization manner, the system pressure is regulated by a heater in a liquid storage tank, and the flow rate is regulated by a pump. During the experiment, when the pressure, flow, dryness or temperature reaches set values, the heating power of the experimental pipe is slowly increased until the CHF is reached; and then the super-gravity is increased and the experiment is repeated. The invention realizes the accurate measurement of the flow boiling CHF under the super-gravity, and obtains the CHF and the correspondingtemperature in different super-gravity sizes and directions, which can be used for exploring the occurrence mechanism of the CHF under the super-gravity.

The invention discloses a waste gas heat recovery and purification device for a setter. The device comprises heat exchange cases arranged above the setter and heat exchange tube stacks in the heat exchange cases, wherein waste gas chambers are arranged at the front and rear ends of the heat exchange tube stacks; clean gas collection passages are arranged above the heat exchange cases; the front ends of the clean gas collection passages are communicated with heat exchange chambers in the heat exchange cases; clean gas inlet pipes are arranged on the lateral surfaces of the clean gas collection passages, and penetrate through the top of the setter to be inserted into the upper parts of heaters; waste gas collection passages are arranged below the heat exchange cases; the front ends of the waste gas collection passages are communicated with the front-end waste gas chambers; the lateral surfaces of the waste gas collection passages are communicated with openings in the top of the setter through waste gas collection pipes; the hot waste gas of the rear-end waste gas chambers is exhausted into gas flow boiling dust removal purification cases for treatment through waste gas exhaust motors, and then is discharged into the air; blower motors are arranged at the tail ends of the heat exchange cases to introduce fresh air. The device is simple in structure, large in heat exchange area, high in heat exchange efficiency, difficult to block and low in failure rate, the tubes have large diameters, fewer bends and small lengths, hot gas can be internally circulated, and waste gas emission is avoided by such an ideal structure, so that remarkable energy saving and emission reduction effects, low cost and high benefits are achieved.

Cooling apparatuses and methods of fabricating thereof are provided which facilitate pumped immersion-cooling of an electronic component(s). The cooling apparatus includes an enclosure having a compartment accommodating the electronic component(s), and dielectric fluid within the compartment at least partially immersing the electronic component(s). A liquid-cooled heat sink is associated with the enclosure to cool at least one cooling surface associated with the compartment, and facilitate heat transfer to the heat sink from the electronic component(s) via the dielectric fluid. A pump is disposed external to the compartment and in fluid communication therewith to facilitate pumped dielectric fluid flow through the compartment. The pumped dielectric fluid flow through the compartment enhances heat transfer from the electronic component(s) to the liquid-cooled heat sink via the cooling surface(s). In one implementation, the pumped dielectric fluid flow provides two-phase cooling to the electronic component(s) via flow boiling.

The invention provides a radial basis function (RBF) neural network-based boiling heat exchanging prediction method, in particular a radial basis neural network-based boiling heat exchanging prediction method of mixed medium flowing inside a horizontal plain tube, and the method comprises the following steps that: collecting data, determining input and output vectors of a network, preprocessing data, training and testing an RBF neural network, utilizing the neural network after being trained for prediction to obtain the predicted flowing boiling heat exchanging coefficient, and realizing the prediction of boiling heat exchange of the mixed medium flowing inside the horizontal plain tube. Due to the adoption of the method, the complicated internal mechanism for analyzing a mixed medium flowing boiling heat exchanging process can be avoided, the experimental times can be reduced, the flowing boiling heat exchanging of the mixed medium can be correctly and rapidly predicted through the simulation test of a computer, the precision is remarkably improved compared to a traditional correlation way, and a good instruction significance on predicting the performance and optimizing the structure of a tube-type heat exchanger in a mixed medium refrigerating system can be realized.