Active Heat Sinks vs. Heart sinks - Idioms by The Free Dictionary. The heat transfer efficiencies have been measured for a wide range of heat sink configurations, and their ranges are listed in Table 4. 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 … 2. A heat sink is a mechanical object that transfers heat generated within a solid material to a fluid medium, such as air or liquid. noun. 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. 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 … But sometimes the heat sink itself can become too hot. Heatsinks leverage a thermal conductor to move the heat into fins, which have larger surface areas and thus disperse the heat throughout the computer. Sink definition is - to go to the bottom : submerge. noun. heat sinks synonyms, heat sinks pronunciation, heat sinks translation, English dictionary definition of heat sinks. Heat Sinks are a form of Heat Exchanger that cools a device by spreading heat into a surrounding medium. "We didn't start with any pre-conceived notion … In Intel computers, the heatsink is positioned either on top … 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. Heat sinks are most commonly utilized in active, passive or hybrid configurations. 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. And in the context of a thermodynamic cycle, a heat source and a heat sink. The fluid medium is frequently air, but can also be water or in the case of heat exchangers, refrigerants and oil. Meaning of 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. 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. 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. Heat sinks consist of fan or cooling device to disperse heat from another object. How does the Heat Sink Calculator Work? Definition of heat sink in English: heat sink. Meaning of heat-sink. Heat sink. Heat sink is defined as an entity to which an amount of energy must be or can be provided. Definition of Heat Sink in the Definitions.net dictionary. When the heat sink utilizes fan (HSF) it is active heat sink. Most often surrounded by air, Heat Sinks are engineered to maximize its surface area contact with the cooling medium. Both a heat sink and a radiator require airflow and, therefore, both have fans built in. Definition of heart sinks in the Idioms Dictionary. Definitions by the largest Idiom Dictionary. All Free. Heat sinks are used on a broad range of electronics, ranging from CPUs to motor drivers. 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. Icing problems may appear at different aircraft locations, where the engine and wing are two icing locations that require special attention. Active heat sinks use cooling fan or blower to cool the heat sink. Their heat sink has a gently sloping "L" shape on one side, and a protruding "d" shape on the other. 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 … heart sinks phrase. What does heart sinks expression mean? 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. - Passive heat sinks rely on natural convection, meaning the buoyancy of hot air alone causes the airflow generated across the heat sink system. The oceans as a heat sink. See more. Pronunciation /hēt siNGk/ /hit sɪŋk/ See synonyms for heat sink. Generally, a microprocessor's temperature should not run in excess of 50-55 degrees Celsius while under a full load. 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. heat sink - WordReference English dictionary, questions, discussion and forums. heet singk. 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. 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. A heat sink is an object that transfers thermal energy from a higher temperature to a lower temperature fluid medium. Definition of heat-sink in the Definitions.net dictionary. They also act as heat sinks. These systems are advantageous as they do not … A heat sink uses its extended surfaces to increase the surface area in contact … where, m is the mass flow rate through the heat sink, c is the heat capacity of the fluid, and. Such a set-up is used in order to measure the cooling capacity of heat sinks. 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. How to use sink in a sentence. Heat sink definition, any environment or medium that absorbs heat. 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 … A device or substance for absorbing excessive or unwanted heat. Define heat sinks. A heatsink is a passive heat exchanger that transfers heat. Passive Heat Sinks. Heat sink design goals may vary, but in this report, Basic heat sink heat transfer principle. 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… Types of heat sink Active Heat Sink. (transitive) To fit with a heat sink. … 1. Heat Sink. THIS DEFINITION IS … Definition. 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. Therefore, they are an important player in the budget of heating and cooling. Information and translations of heat-sink in the most comprehensive dictionary definitions resource on the web. Nearly all computers have heat sinks , which help keep the CPU cool and prevent it from overheating. However, most heat sinks use fins to increase surface area and create optimal air flow patterns, as shown in the table … Or, if the heat sink is of the same size as the source, but heat … Search heat sink and thousands of other words in English definition and synonym dictionary from Reverso. 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 … 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. Heatsinks leverage a thermal conductor to move the heat into fins, which have larger surface areas and thus disperse the heat throughout the computer. ‘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.’ n. 1. Where, T a is the approach fluid temperature to the device/heat-sink. As it can act as a source and sink of heat, it is often also referred to as a heat reservoir or heat bath. Passive heat sinks do not use any fans and have no moving parts and are … Heat sink definition: a metal plate specially designed to conduct and radiate heat from an electrical component | Meaning, pronunciation, translations and examples In computers, it is attached with a microprocessor chip to absorb heat and sends it to air. Information and translations of Heat Sink in the most comprehensive dictionary definitions resource on the web. These have excellent cooling performance but require periodic maintenance due to the moving parts. HSF: Stands for "Heat Sink and Fan." T sa is the average temperature difference between the heat sink and the ambient air. There are two types of heat sinks, namely the passive heat sink and the active heat sink. 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