39 results about "Thermal effusivity" patented technology

A temporal thermal survey method to locate at a given area whether or not there is a subsurface object or void site. The method uses thermal inertia change detection. It locates temporal heat flows from naturally heated subsurface objects or faulty structures such as corrosion damage. The added value over earlier methods is the use of empirical methods to specify the optimum times for locating subsurface objects or voids amidst clutter and undisturbed host materials. Thermal inertia, or thermal effusivity, is the bulk material resistance to temperature change. Surface temperature highs and lows are shifted in time at the subsurface object or void site relative to the undisturbed host material sites. The Dual-band Infra-Red Effusivity Computed Tomography (DIRECT) method verifies the optimum two times to detect thermal inertia outliers at the subsurface object or void border with undisturbed host materials.

The present invention provides a thermal paper composite precursor comprising (a) a substrate layer; and (b) a base layer positioned on the substrate layer, the base layer comprising a binder and at least one porosity improver wherein the thermal paper composite precursor has a thermal effusivity that is at least about 2% less than the thermal effusivity of porosity improver-less thermal paper composite precursor. The thermal paper composite precursor is useful in making thermal paper composite.

A method and apparatus for monitoring during dynamic processes that determines when effective measurements of thermal effusivity and / or thermal conductivity can be made during a portion of a cycle during a calibration phase, then measures thermal effusivity and / or thermal conductivity during a subsequent dynamic process in dependence upon the time delay value and the measurement duration value until a desired value is obtained. A sensor having a measurement period of between one to two seconds allows monitoring of materials during dynamic processes such as tumbling, blending, mixing, and rocking. For example, measurements can be made until a value indicative of a desired mixture condition is obtained.

The present invention provides a heat storage device, a heat storage system, and a heat storage method capable of suppressing an increase in running cost, preventing energy shortage even when heat extraction is progressing, and reducing heat radiation loss. The heat storage device includes: a heat storage tank containing a heat storage material having heat storage performance and heat release performance; a heat source unit that generates heat supplied to the heat storage material; A first heat medium flow path, the first heat medium flow path is used for the flow of the first heat medium, and is thermally connected with the heat storage material and the heat source machine; and a plurality of temperature sensors, the plurality of temperature sensors are arranged in the heat storage tank , and measure the temperature of the heat storage material. The plurality of temperature sensors are arranged at positions at different distances from the heat transfer surface of the first heat medium flow path where the first heat medium flow path and the heat storage material come into contact. The heat source machine generates heat based on the detection results of the plurality of temperature sensors.

The invention discloses a composite bottom pot body and a manufacturing method thereof. The composite bottom pot body (100) comprises a pot bottom wall (1) and a composite bottom sheet (3) arranged at the bottom of the pot bottom wall. The pot bottom wall and the composite bottom sheet A compound bottom cavity (5) is formed therebetween, the pot bottom wall and the compound bottom sheet are fixedly connected by a connecting piece (2), and the compound bottom cavity is also filled with a sintered compound bottom cavity filling material (4). The manufacturing method includes connecting the double bottom sheet at the bottom of the bottom wall of the pot through a connecting piece; welding and sealing the peripheral edge (31) of the double bottom sheet and the outer peripheral wall of the pot body; filling the compound bottom cavity between the reciprocating bottom sheet and the pot body. The bottom cavity filling material; finally, the pot body with the double bottom sheet and the double bottom cavity filling material is heated. The cookware of the invention can thicken the bottom of the pan, improve the heat storage performance and thermal conductivity of the bottom of the pan, improve the temperature uniformity of the bottom of the pan, reduce the generation of oil fume, and improve the product quality and user experience. The manufacturing method is simple, practical and low in cost, and can be used in mass production with high efficiency.