1345 results about "Convection heat" patented technology

A magnetically enhanced convection heat sink comprises a heat sink member for dissipating heat from a heat source. A magnetic source creates a magnetic field concentrated at a first location, the intensity of the magnetic field decreasing from the first location to a second location. The heat sink member is positioned within the magnetic field and in a gas flow path between the first and second locations. Gas, having paramagnetic properties, entering the heat sink at the first location is heated by the heat sink member, and as the gas becomes warmer is displaced by cooler gas causing the warmer gas to move toward the second location as it is further heated by the heat sink.

A multifunctional cooking oven for the preparation of food products including a cooking chamber, racks within the cooking chamber to support products to be prepared in the oven and a primary convection heat source. There is a drainable collection pan positioned below the racks to collect by-products rendered from the food products during preparation for later use. A steam source is positioned below the collection pan as well as a flavored smoke generator at the bottom of the preparation chamber. Airflow paths within the preparation chamber allow for the circulation of heat, steam and flavored smoke around the racks. The oven includes a programmable controller to control the primary heat source, the steam source and the flavored smoke generator that is programmed to operate any one of the heat source, the steam source and the flavor generator in any predetermined sequence, and for any predetermined duration of time to provide optimum preparation and flavoring of the products.

A high temperature bake oven including a source of heat, a first stone-like plate located above the heat source receiving an item to be baked, a second stone-like plate located above the first plate and a housing enclosing the first and second plates forming a bake oven chamber between the first and second plates having a front opening directing convection heat upwardly from the heat source against the first and second plates and between the plate over an item to be baked.

A hermetic Rankine cycle in a sealed casing powers an internal centrifugal condensate pump with an internal vapor turbine during forced convective heat transfer between a heat source and a heat sink. No work is imported into the cycle during operation. A centrifugal pumping disk shears the working fluid against a heating surface, sweeping evolving vapor into radial vortices which provide sink flow conduits to a vapor space at the center of the cylindrical turbine. Convective mass flow through the vapor space to the condensing end of the casing spins the turbine and the centrifugal pumping disk which is connected to it. Vapor is continuously swept from the heating surface, so bubbles do not form and superheat while blocking heat flux into liquid working fluid. Vapor is sucked through the radial vortices into the central vapor space and into the condensing end of the casing along the low pressure gradients in vortex cores established by cooling power. A high heat flux surface is thereby thermally connected to a conventional heat sink having high cooling power, for maximal heat extraction at data centers or other heat sources. Vapor vortices organize counterflow of vapor and condensate in a continuous mass flow cycle, and extract work from heat. Organic working fluids can be used in the casing to make even low temperature waste heat a power source.

A cellular material that can provide a unique combination of properties and characteristics for a variety of applications requiring a cellular solid that possesses one or more of the following characteristics: (1) efficient load support in one or more directions, (2) excellent mechanical impact energy absorption and vibration suppression potential, (3) high convection heat transfer throughout, (4) low pumping requirements for fluid throughput, for example in a second direction orthogonal to one or more load-bearing directions, (5) a substantially linear dependence of the Young's and shear moduli along with the tensile, compressive and shear yield strengths upon relative density (6) a potentially inexpensive textile-based synthetic approach, (7) excellent filtration potential, (8) a high surface area to volume ratio for enhanced activity as a catalyst or catalyst support (9) interconnected, open porosity for device storage, biological tissue in-growth or other functionalities requiring open space, and (10) extendibility to a wide variety of materials.