Find out inside PCMag's comprehensive tech and computer-related encyclopedia. Active heat sinks are used in liquid cooling system. Define heat sink. A computer motherboard. Otherwise, it can have a very negative effect on its performance and in extreme cases, the system will shut down if the heat is excessive. Figure 2: Axial fan-heat sinks systems for portable computer. See more. Even if you can't find your model, the tutorial for a similar model can be useful. en.wiktionary.org. Some also require a fan. Boing Boing: December 11, 2005 - … Computer dictionary definition for what heat sink means including related links, information, and terms. When the heat sink utilizes fan (HSF) it is active heat sink. 1. The fluid medium is frequently air, but can also be water or in the case of heat exchangers, refrigerants and oil. All modern CPUs require a heat sink. Aluminum-cased wirewound resistors are designed to be attached to a heat sink to dissipate the heat. Of the three resistances, we can really only control the last two because the component’s thermal resistance is defined by the manufacturer. Figure 1: Micro blower-heat sink system for portable computer. For yet another, it is not 3/4 covered by a massive liquid heat-sink that convectively carries heat across its surface. ‘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 … The mentioned heat sink is part of an experimental setup presented in Fig. In most of computer processor, a fan is attached just above the heat sink. The heat transfer efficiencies have been measured for a wide range of heat sink configurations, and their ranges are listed in Table 4. Global Hot Air « Lean Left. 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. A heat sink is a metal plate that is specially designed to conduct and radiate heat away from an electrical component. THIS DEFINITION IS FOR PERSONAL USE ONLY. Nearly all computers have heat sinks , which help keep the CPU cool and prevent it from overheating. All modern CPUs require a heat sink. In doing so, the 6 Heat Sink Types (By Manufacturing Process) Each heat sink manufacturing process has its own advantages and drawbacks. 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 hot. Heat sink Definition from Computer & Internet Dictionaries & Glossaries. Video cards therefore need to employ heat sinks, which consist of metal strips to distribute the heat evenly and dissipate the heat into the surrounding air. But sometimes the heat sink itself can become too hot. When a computer is in use, electrical activity within the CPU and chipset generates considerable heat, which if not dissipated, will damage or even melt the chips, making them inoperable. Both a heat sink and a radiator require airflow and, therefore, both have fans built in. T sa is the average temperature difference between the heat sink and the ambient air. Use a search engine. A heat sink without a fan is called a passive heat sink; a heat sink with a fan is called an active heat sink. Basic heat sink heat transfer principle. heat sink - a metal conductor specially designed to conduct (and radiate) heat. What does CPU heat sink actually mean? n. 1. This utilizes power for cooling process. 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. #1 – Extruded Heat Sinks. Disconnect the fan Actually, What exactly is a heat? where, m is the mass flow rate through the heat sink, c is the heat capacity of the fluid, and. For this computer, the duct system can be removed by pressing in on the clips and pulling the duct away from the processor. Heat sink. For the cooling purpose,it incorporates a fan or cooling device. CPU fans often work together with heat sinks to keep a computer cool. sink - (technology) a process that acts to absorb or remove energy or a substance from a system; "the ocean is a sink for carbon dioxide" Search heat sink and thousands of other words in English definition and synonym dictionary from Reverso. Heat sink definition is - a substance or device that absorbs or dissipates especially unwanted heat (as from a process or an electronic device). en.wiktionary.2016 ... Also taught is an interface plate adapted to cool multiple electronic components using a single external heat sink. Heatsinks leverage a thermal conductor to move the heat into fins, which have larger surface areas and thus disperse the heat throughout the computer. A heat sink is a device that allows the transfer of heat away from the heat source. This heat needs to be removed from the component Heat Sink. Internet Glossary. Thermal paste (also called thermal compound, thermal grease, thermal interface material (TIM), thermal gel, heat paste, heat sink compound, heat sink paste or CPU grease) is a thermally conductive (but usually electrically insulating) chemical compound, which is commonly used as an interface between heat sinks and heat sources such as high-power semiconductor devices. 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