106results about "Specific heat investigation" patented technology

A method comprises heating a formation adjacent a selected depth level within a wellbore extending into the formation, forming a temporary liner in the wellbore, measuring a first temperature of the formation at the selected depth level at a first time after heating the formation, measuring a second temperature of the formation at the selected depth level at a second time after heating the formation, and combining the temperature measurements to derive an indication of thermal properties of the formation. An apparatus comprises a coiled tubing drillstring extending into a wellbore, an assembly supported by the drillstring, the assembly comprising an extruder that extrudes a liner material onto a wall of the wellbore, a heat source that heats the liner material and a formation, and at least one temperature sensor that measures a temperature of the formation.

A method and / or system is provided that compensates for the flow of air through fiberglass insulation. In certain example embodiments, a dynamic heat flow meter or the like is provided for measuring and / or determining any detrimental effects of air flow through insulation such as fiberglass insulation. Once the possible detrimental effects are recognized, an insulation system is adapted (e.g., by providing a foam based insulation in a wall cavity in addition to the fiberglass insulation) to compensate, or substantially compensate, for the effects of air flow through the fiberglass. For instance, a sufficient amount of foam insulation may be provided in a cavity adjacent fiberglass, where the foam blocks or substantially blocks air from flowing through the cavity, thereby compensating for the effects of air flow through fiberglass and permitting the intended R-value to be maintained or substantially maintained.

The invention relates to a device and methods for characterizating flowing substances, liquid or gas. The device includes: a transport duct with a heating or a cooling element; a temperature difference sensor having a temperature measurement cell downstream of the heating or cooling element and means to determine a temperature difference in the flowing substance upstream and downstream of the heating or cooling element; a flow control means having flow measurement means for measuring a mass flow characteristic and a flow correction means for correcting for measured mass flow variations; and an evaluation means for evaluating a characterizing feature of the flowing substance comprising a function relating temperature differences measured on one or more calibration substances to one or more characterizing features of the flowing substance. Various embodiments relate to the related use and methods of the device for identification and control of the flowing substance.

The invention discloses a method for obtaining furnace thermal efficiency. The method comprises the steps of obtaining effective output heat and total output heat of a furnace, and obtaining the furnace thermal efficiency according to the effective output heat and the total output heat. In the method, the according to the obtained effective output heat and the total output heat, the furnace thermal efficiency is obtained, the furnace thermal efficiency can be obtained without a coal quality test, and the method makes it convenient to obtain the furnace thermal efficiency and satisfies the real-time performance and the accuracy.

A method and a measuring apparatus for determining specific quantities for the gas quality in which the gas or gas mixture flows through an ultrasonic flow sensor as well as through a microthermal sensor, and the former is used for determining the sound and flow velocity and the latter for determining the thermal conductivity and the thermal capacity of the gas or gas mixture. The sound velocity, the thermal conductivity and the thermal capacity are subsequently used for the correlation of the specific quantities for the gas quality.

A dynamic heat flow meter is provided which introduces a measured air flow into the system adjacent the test sample (e.g., insulation product), for which thermal properties are to be measured. The heat flow meter then measures thermal properties (e.g., thermal conductivity and / or heat capacity) of the test sample taking into account air flow through and / or adjacent the test sample.

A method and a measuring apparatus for determining specific quantities for the gas quality in which the gas or gas mixture flows through an ultrasonic flow sensor as well as through a microthermal sensor, and the former is used for determining the sound and flow velocity and the latter for determining the thermal conductivity and the thermal capacity of the gas or gas mixture. The sound velocity, the thermal conductivity and the thermal capacity are subsequently used for the correlation of the specific quantities for the gas quality.

A liquid-condition detection sensor (1) including a sensor element (51), at least a portion of which contacts a urea aqueous solution; connection terminals (52) fixedly attached to the sensor element (51); connection cables (53) which electrically communicate with the concentration sensor element (51) via the connection terminals (52); an inner tube (42) which holds the concentration sensor element (51) at a distal end portion (421) by use of a holder member (55) and surrounds a portion of the connection cables (53) and the entire connection terminals (52); and a separator formed from a material having rubberlike elasticity (54) including a terminal-inner-tube-insulating portion (542) which intervenes between the connection terminals (52) and the inner tube (42) to thereby insulate the connection terminals (52) and the inner rube (42) from one another.

Disclosed are a method and an apparatus for determining acceptance / rejection of fine diameter wire bonding of semiconductor devices, LED devices, and the like at a high accuracy without contact, said acceptance / rejection having not been determined by conventional image inspecting methods and the like. The apparatus is configured of: a heating laser device (1) which spot-heats the bonding portion of the fine diameter wire; a two-wavelength infrared radiation thermometer (2), which corrects an emissivity and measures a temperature at a high speed on the basis of a minute amount of infrared rays radiated from the heated portion of the fine diameter wire; and a correcting / determining means (4), which corrects the measurement results obtained from the two-wavelength infrared radiation thermometer (2) to a temperature change with reference heating power, then determines acceptance / rejection of the bonding by comparing the corrected temperature change or a value correlated to a bonding area obtained on the basis of the corrected temperature change with a temperature change indicated by an acceptable reference product having the temperature change corrected with the reference heating power or a value correlated to a bonding area obtained on the basis of the temperature change indicated by the acceptable reference product.

The present invention concerns itself with a dry, free of toxic chemicals, and thus, environmentally safe, mineral processing technique. It uses ore elements' specific heat differences as the basis for separating valuable minerals from ores. No EPA approval, no environmental pit and no expensive monitoring are required in order to practice the teachings of the present invention. Furthermore, the technique described herein is economically attractive since it is a low cost approach to mineral processing.