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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… Figure 1: Micro blower-heat sink system for portable computer. A CPU fan works in conjunction with a heat sink to prevent this. 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. 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" A heat sink without a fan is called a passive heat sink; a heat sink with a fan is called an active heat sink. This utilizes power for cooling process. Use a search engine. A component designed to lower the temperature of an electronic device by dissipating heat into the surrounding air. 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. Some also require a fan. A computer motherboard. The correct definition of heat says that it is the total kinetic energy of all atoms or molecules of a substance. There are a number of different ways to make heat sinks. heat sink synonyms, heat sink pronunciation, heat sink translation, English dictionary definition of heat sink. Heat transfer from the heat sink consists of radiation and convection from both the intra-fin passages and ... such as computer chips, electronics, and telecommunication boxes. The main advantages of natural convection are high Find out inside PCMag's comprehensive tech and computer-related encyclopedia. heat sink - a metal conductor specially designed to conduct (and radiate) heat. Selecting the Heat Sink and Compound. Basic heat sink heat transfer principle. that…. The main objective of this paper is to investigate the effects on thermal performance under axial fan and micro blower airflow for different gap/length ratio heat sinks. A heat sink is an object that transfers thermal energy from a higher temperature to a lower temperature fluid medium. Passive Heat Sink. 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. The majority of heat … The heat sink for this computer's processor is not visible until this duct is removed from the computer. THIS DEFINITION IS FOR PERSONAL USE ONLY. A heat sink is a metallic device that sits directly on the CPU, drawing heat away from the chip into its cooler, aluminum, fin-like structure. conductor - a device designed to transmit electricity, heat, etc. Aluminum-cased wirewound resistors are designed to be attached to a heat sink to dissipate the heat. All modern CPUs require a heat sink. CISC CPUs are usually built into a system which has a heat sink. where, m is the mass flow rate through the heat sink, c is the heat capacity of the fluid, and. en.wiktionary.org. HSF: Stands for "Heat Sink and Fan." It can be in the form of a paste or jelly or a simplealuminum structure which is attached to the heat source. Internet Glossary. Search heat sink and thousands of other words in English definition and synonym dictionary from Reverso. 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. Even if you can't find your model, the tutorial for a similar model can be useful. 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. When the heat sink utilizes fan (HSF) it is active heat sink. But sometimes the heat sink itself can become too hot. Both a heat sink and a radiator require airflow and, therefore, both have fans built in. In doing so, the In most of computer processor, a fan is attached just above the heat sink. Define heat sink. A heat sink is a metal plate that is specially designed to conduct and radiate heat away from an electrical component. After the duct is removed, the computer processor and the heat sink should be visible. T sa is the average temperature difference between the heat sink and the ambient air. Types of heat sink Active 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. 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. Nearly all computers have heat sinks , which help keep the CPU cool and prevent it from overheating. After passing the heat sink, the liquid was cooled down in the external heat exchanger (4) and collected in the reservoir (5). The CPU fan attaches to the heat sink, pulling air through the fins. Plural form of heat sink. How does the Heat Sink Calculator Work? Heat sink definition, any environment or medium that absorbs heat. and fan to cool them down. For the cooling purpose,it incorporates a fan or cooling device. translation and definition "heat sinks", Dictionary English-English online. Heat sink design goals may vary, but in this report, optimization of the vertical heat sink is the main objective. heat sinks Definitions. Boing Boing: December 11, 2005 - … The mentioned heat sink is part of an experimental setup presented in Fig. 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. For yet another, it is not 3/4 covered by a massive liquid heat-sink that convectively carries heat across its surface. Global Hot Air « Lean Left. ‘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 … Computer dictionary definition for what heat sink means including related links, information, and terms. 6 Heat Sink Types (By Manufacturing Process) Each heat sink manufacturing process has its own advantages and drawbacks. Figure 2: Axial fan-heat sinks systems for portable computer. Learn more. Heat sink definition is - a substance or device that absorbs or dissipates especially unwanted heat (as from a process or an electronic device). Actually, What exactly is a heat? Heat sink Definition from Computer & Internet Dictionaries & Glossaries. A component designed to lower the temperature of an electronic device by dissipating heat into the surrounding air. For this computer, the duct system can be removed by pressing in on the clips and pulling the duct away from the processor. #1 – Extruded Heat Sinks. It's amazingly detailed -- separate gingerbread RAM, heat-sink, etc, all lovingly assembled on a gingerbreadboard. 1. Heatsinks leverage a thermal conductor to move the heat into fins, which have larger surface areas and thus disperse the heat throughout the computer. Internet Dictionaries. Cooling fluid from the reservoir was pumped (1) through the flow meter (2) to the heat sink (3). en.wiktionary.2016 ... Also taught is an interface plate adapted to cool multiple electronic components using a single external heat sink. heat sink definition: 1. a substance or object that absorbs heat: 2. a device in a computer, mobile phone, etc. It's easier to clean a heat sink on a desktop PC than it is to clean on a laptop, but you may be able to find a tutorial on how to get at the heat sink on even the most complicated laptop. The metal heat sink ensures good heat dispersal and allows a low hot-spot temperature. Of the three resistances, we can really only control the last two because the component’s thermal resistance is defined by the manufacturer. Active heat sinks are used in liquid cooling system. The fluid medium is frequently air, but can also be water or in the case of heat exchangers, refrigerants and oil. n. 1. 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. This heat needs to be removed from the component Heat Sink. See more. All modern CPUs require a heat sink. Smartphones or tablets do not have space for heat sinks or fans. Disconnect the fan Some also require a fan. CPU fans often work together with heat sinks to keep a computer cool. Let’s take a look at 6 common heat sink types. 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