Information and translations of thermal insulator in the most comprehensive dictionary definitions overheating motor due to a blocked water cooling system, which allowed the water to act as an insulator! It's difficult to see thermal conductivityin a sentence. For the purpose of measuring resistances up to a few thousand ohms, the most convenient appliance is a Wheatstone's Bridge (q.v), but when the resistance of the conductor to be measured is several hundred thousand ohms, or if it is the resistance of a so-called insulator, such as the insulating covering of the copper wires employed for distributing electric current in houses and buildings for electric lighting, then the ohmmeter is more convenient. Click on a word above to view its definition. Thus, a material, to be a good insulator, would have a low thermal conductivity, whereas a radiator would have a high rate of conductivity to dissipate the heat. Plastic. Heat pipes have a much higher effective thermal conductivitythan solid materials. Commonly used words are shown in bold. Theoretically this requires an infinite plate; or a perfect heat insulator, so that the lateral flow can be prevented or rendered negligible. of the ends of the insulator and the current flowing through it, that is, by its insulation resistance. It normally occurs via conduction through a dense material (such as metal). Insulator may refer to: Insulator (electricity), a substance that resists electricity Pin insulator, a device that isolates a wire from a physical support such as a pin on a utility pole Strain insulator, a device that is designed to work in mechanical tension to withstand the pull of a suspended electrical wire or cable The double cup gives great security against loss of insulation due to cracks extending through the insulator, and also gives a high surface insulation. Similar words: insulate, insulated, insulator, consultation, insular, peninsula, peninsular, insularity. Typically the phrase 'thermal insulator' refers to a material that blocks conduction. Thus, a material, to be a good insulator , would have a low thermal conductivity, whereas a radiator would have a high rate of conductivity to dissipate the heat. A measure of whether a semiconductor most resembles a conductor or an insulator is given in the band gap - the amount of energy needed to produce moving charge-bearers in the form of electrons and "holes". The leading use of block mica is as an electrical insulator in electronic equipment. These materials are known as thermal insulators. Example – Heat Loss through a Wall A major source of heat loss from a house is through walls. If we call this last resistance R, the voltage of the working dynamo V, and the current through the insulator C, then tan 0 = C/V = R. The cost of the cable before laying depends on the dimensions of its core, the gutta-percha, which still forms the only trustworthy insulator known, constituting the principal item of the expense; for an Atlantic cable of the most approved construction the cost may be taken at f250 to £300 per nautical mile. What does thermal insulator mean? 2. How to use insulate in a sentence. Calculate the rate of heat flux through a wall 3 m x 10 m in area (A = 30 m 2).The wall is 15 cm thick (L 1) and it is made of bricks with the thermal conductivity of k 1 = 1.0 W/m.K (poor thermal insulator… Maxwell never committed himself to a precise definition of the physical nature of electric displacement, but considered it as defining that which Faraday had called the polarization in the insulator, or, what is equivalent, the number of lines of electrostatic force passing normally through a unit of area in the dielectric. There is no perfect insulator, but a thin layer of air resists the flow of heat about 15,000 times better than a good metallic conductor of the same thickness. Heavy-weight fleece - Creates a warm thermal layer and is a perfect insulator for extremely cold weather. Dielectric constant.-Since all electric charge consists in a state of strain or polarization of the dielectric, it is evident that the physical state and chemical composition of the insulator must be of great importance in determining electrical phenomena. What does insulator mean? Examples of insulator in a Sentence Metal is not a good insulator. Dust acting as a thermal insulator and impeding airflow, thereby reducing heat sink and fan performance. The thermal conductivityof BN is among the highest of all electric insulators. 5), having two holes in its sides, has a vertical brass strip B attached to the inside of the lid by a block of sulphur SS or any other good insulator. Wood. Most manufacturers give a value for the thermal conductivityof a material. It follows from this that the electric force at the surface of the conductor has no component along the surface, in other words, the electric force at the bounding surface of the conductor and insulator is everywhere at right angles to it. 5 3 Heavy-weight fleece - Creates a warm thermal layer and is a perfect insulator for extremely cold weather. Cotton or silk insulation will char at about 260 deg. How to use insulator in a sentence. 15. In thermal power stations, mechanical power is produced by a heat engine that transforms thermal energy, often from combustion of a fuel, into rotational energy. Thus, a material, to be a good insulator, would have a low thermal conductivity, whereas a radiator would have a high rate of conductivity to dissipate the heat. It has arrowhead and electric insulator collections. Wood acts as a natural insulator, thereby rendering the interior of the dog house cool in the summer and warm in the winter. Take for example the following picture. Selection of insulator type, number of insulator string and air space is the main basis of transmission line insulation coordination. Example sentences with the word insulation. The insulator structure may reduce the occurrence of flashovers to and from the gate lines and emitters when the field emitter device is used in a display. Are saccharin, formaldehyde insulation, pesticides, PCBs and bovine growth hormone perfectly safe? The thermal conductivity of BN is among the highest of all electric insulators. | Meaning, pronunciation, translations and examples This harmonizes with the fact that the real seat of the energy 3f electrification is the dielectric or insulator surrounding the charged conductor.'. The insulation from triple glazing is significantly greater than that from double glazing: 9. An insulator is a non-conductor of electricity or heat. First as regards the transmitting part, one essential element is the antenna, aerial, or air wire, which may take a variety of forms. Thermal system insulation (TSI) is material insulating mechanical systems controlling heat loss or gain in a building.. This forms an insulator which is not affected by heat or moisture. insulator tip is the hottest part of the spark plug, the tip temperature is a primary factor in preignition and fouling. Take care not to contact the porcelain insulator or the center electrode as they can be easily damaged. Words and phrases that rhyme with insulator: ... dielectric constant, insulation, semiconducting, silicon oxide, thermal conductivity, permittivity, silicide, more... — Use insulator in a sentence. Thermal system insulation (TSI) in 1st Rooms 002, 006 and J-73, totaling about 130, LF, within Attic 032, totaling about 280 LF, and potentially also located in concealed wall cavities and ceiling plenums throughout, totaling about 400 LF [ACP Sample I.D. You may also be wondering how a thermal insulator actually works. The air gap creates a thermal insulator with the third layer enabling all the moisture to escape at its own rate. Allow the fluid to dry before laying the … Given a certain allowable heat transmission, the principal points to be considered in connexion with insulation are, first cost, durability, weight and space occupied, the two last named being specially important factors on board ship. that it behaves the same for other forms! In simple terms, an electrical conductor is defined as materials that allow electricity to flow through them easily. Definition of thermal insulator in the Definitions.net dictionary. Why is paper used as an insulator of telephone cables? 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