heat sink definition

A heatsink is a passive heat exchanger that transfers heat. A heat sink is an object that transfers thermal energy from a higher temperature to a lower temperature fluid medium. 1971, Joseph Stewart Bravman, Thermal effects in the operation of GaAs transferred electron microwave oscillators, page 138: It was necessary to heatsink the device through the center conductor of the coax thereby producing a total thermal resistance from … ... heat; heat through; heat up; heat wave; heated; heater; Heath Robinson; heather; Definition of Heat Sink in the Definitions.net dictionary. Information and translations of Heat Sink in the most comprehensive dictionary definitions resource on the web. Definition. heat sinks synonyms, heat sinks pronunciation, heat sinks translation, English dictionary definition of heat sinks. Different to other planets in the solar system, the Earth is covered by large oceans that make up for 2/3 of the total surface area. Heatsinks leverage a thermal conductor to move the heat into fins, which have larger surface areas and thus disperse the heat throughout the computer. The global warming caused by the Greenhouse Effect is one of the biggest challenges of mankind. where, m is the mass flow rate through the heat sink, c is the heat capacity of the fluid, and. The heat transfer efficiencies have been measured for a wide range of heat sink configurations, and their ranges are listed in Table 4. As it can act as a source and sink of heat, it is often also referred to as a heat reservoir or heat bath. heat sink - WordReference English dictionary, questions, discussion and forums. And in the context of a thermodynamic cycle, a heat source and a heat sink. Heat sink is an electronic component or a device of an electronic circuit which disperses heat from other components (mainly from the power transistors) of a circuit into the surrounding medium and cools them for improving their performance, reliability and also avoids the premature failure of the components. Nearly all computers have heat sinks , which help keep the CPU cool and prevent it from overheating. Active heat sinks use cooling fan or blower to cool the heat sink. heet singk. What does heart sinks expression mean? - Passive heat sinks rely on natural convection, meaning the buoyancy of hot air alone causes the airflow generated across the heat sink system. n. 1. As mentioned above, but important to stress, the temperature of the reservoir does not change when heat is added or extracted because of the infinite heat capacity. Heat sink definition, any environment or medium that absorbs heat. Meaning of Heat Sink. These systems are advantageous as they do not … Heat sinks are most commonly utilized in active, passive or hybrid configurations. Icing problems may appear at different aircraft locations, where the engine and wing are two icing locations that require special attention. Most often surrounded by air, Heat Sinks are engineered to maximize its surface area contact with the cooling medium. HSF: Stands for "Heat Sink and Fan." 1. Active Heat Sinks vs. (transitive) To fit with a heat sink. 2. Heat sinks are devices that are used to enhance heat dissipation from hot surfaces to cooler ambient air. T sa is the average temperature difference between the heat sink and the ambient air. Heat sink. In computers, it is attached with a microprocessor chip to absorb heat and sends it to air. To begin the heat sink selection, the first step is to de-termine the heat-sink thermal resist ante required to satisfy the thermal criteria of the component. Heat sinks consist of fan or cooling device to disperse heat from another object. noun. Where, T a is the approach fluid temperature to the device/heat-sink. The protective case of the device containing the heat-generating component could theoretically function as a heat sink as well. Model Definition The modeled system consists of an aluminum heat sink for cooling of components in electronic circuits mounted inside a channel of rectangular cross section; see Figure 1. Definition of heart sinks in the Idioms Dictionary. The heatsink is typically a metallic part which can be attached to a device releasing energy in the form of heat, with the aim of dissipating that heat to a surrounding fluid in order to prevent the device overheating. It is an effectively infinite pool of thermal energy at a given, constant temperature.Since it can act as a source and sink of heat… However, most heat sinks use fins to increase surface area and create optimal air flow patterns, as shown in the table … Such a set-up is used in order to measure the cooling capacity of heat sinks. noun. Heat sinks are used on a broad range of electronics, ranging from CPUs to motor drivers. See more. Sink definition is - to go to the bottom : submerge. But sometimes the heat sink itself can become too hot. Heat sink definition: a metal plate specially designed to conduct and radiate heat from an electrical component | Meaning, pronunciation, translations and examples Generally, a microprocessor's temperature should not run in excess of 50-55 degrees Celsius while under a full load. In this article, we’ll walk you through the basics of heat sinks and heat sink design, including the calculations involved in defining the proper heat sink … "We didn't start with any pre-conceived notion … Heat Sink. Heat sink design goals may vary, but in this report, By rearranging the previous equation, the heat-sink resistance can be easily obtained as R T j _ Ta sa = Q – R jc _ Rca In this expression,T j, Q and Rjc areprovided by the … How to use sink in a sentence. A heat sink is a mechanical object that transfers heat generated within a solid material to a fluid medium, such as air or liquid. This can happen if the CPU is running at full capacity for an extended period of time or if the air surrounding the computer is simply too … Definition of heat-sink in the Definitions.net dictionary. Their heat sink has a gently sloping "L" shape on one side, and a protruding "d" shape on the other. Types of heat sink Active Heat Sink. Heat sinks are made of metals like copper or aluminum alloy. Passive Heat Sinks. Definitions by the largest Idiom Dictionary. All Free. The "d" shape causes airflow to back up and recirculate, spending more time in the heat sink, and removing more heat, before being channeled out by the "L" shape. A device or substance for absorbing excessive or unwanted heat. Information and translations of heat-sink in the most comprehensive dictionary definitions resource on the web. The simplest heat sink could consist of a single piece of thermally conductive metal. When the heat sink utilizes fan (HSF) it is active heat sink. A heat sink uses its extended surfaces to increase the surface area in contact … This tool is designed to calculate junction temperature of an electronic device (typically power devices) given four parameters: the maximum ambient temperature, the device's junction-to-package thermal resistance, the thermal resistance of the heat sink, and the power applied. Heatsinks leverage a thermal conductor to move the heat into fins, which have larger surface areas and thus disperse the heat throughout the computer. The fluid medium is frequently air, but can also be water or in the case of heat exchangers, refrigerants and oil. Heat sink is defined as an entity to which an amount of energy must be or can be provided. How does the Heat Sink Calculator Work? Passive heat sinks do not use any fans and have no moving parts and are … Basic heat sink heat transfer principle. Both a heat sink and a radiator require airflow and, therefore, both have fans built in. A thermal reservoir, also thermal energy reservoir or thermal bath, is a thermodynamic system with a heat capacity so large that the temperature of the reservoir does not change when a reasonable amount of heat is added or extracted. … Heart sinks - Idioms by The Free Dictionary. Or, if the heat sink is of the same size as the source, but heat … There are two types of heat sinks, namely the passive heat sink and the active heat sink. ‘Every computer contains a device known as a heat sink.’ ‘The expanding universe is quite an effective heat sink.’ ‘Judging by the small size of the heat sink and fan on the processor, this is a fairly cool running processor.’ These have excellent cooling performance but require periodic maintenance due to the moving parts. Therefore, they are an important player in the budget of heating and cooling. Heat Sinks are a form of Heat Exchanger that cools a device by spreading heat into a surrounding medium. The heat sink has a thermal conductor that carries heat away from the CPU into fins that provide a large surface area for the heat to dissipate throughout the rest of the computer, thus cooling both the heat sink and processor. You can complete the definition of heat sink given by the English Definition dictionary with other English dictionaries: Wikipedia, Lexilogos, Oxford, Cambridge, Chambers Harrap, Wordreference, Collins Lexibase … Definition of heat sink in English: heat sink. heatsink: A heatsink is a device that is attached to a microprocessor chip to keep it from overheating by absorbing its heat and dissipating it into the air. Heat Sink on a Chip This type of heat sink is glued to the top of the chip, typically a CPU chip, which generates considerable heat. THIS DEFINITION IS … Typically, the fins are oriented in a way to permit a natural convection air draft to flow upward through rectangular U-channels, or ducts, formed by the fins. The oceans as a heat sink. Meaning of heat-sink. The value of the spreading resistance (R sp) is obtained from [2], Rsp stems from dissimilar contact areas between the source and the sink.That is when the heat sink is larger than the device, as shown in Figure 1. 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