Water cooling and heat dissipation of mining machine
the concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's idea, the open source software and the P2P network on it were designed and released. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system
unlike most currencies, bitcoin does not rely on specific currency institutions. It is generated by a large number of calculations based on specific algorithms. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses cryptography design to ensure the security of all aspects of currency circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity. The monetary system used to have no more than 10.5 million in four years, after which the total number will be permanently limited to 21 million
QB, also known as QQ, Tencent, etc. Usually its exchange rate is 1q currency = 1 RMB, with Tencent paipai net transactions are generally 10% off
QB is a virtual currency launched by Tencent, which can be used to pay for QQ bank number, QQ member service and other services. Tencent q-coin, through the purchase of QQ card, telephone recharge, bank card recharge, network recharge, mobile phone recharge card, one card recharge card and other ways to obtain.
advantages: liquid cooling has a large specific heat capacity, which is a kind of oppressive heat dissipation. Generally, the full load is only 10 degrees higher than that on the Internet. When it's cold, it's OK to turn off the heat exchange fan, as long as the liquid flows, it can dissipate heat
disadvantages: in case of leakage, you will die miserably Maintenance is troublesome. When assembling parts, you should avoid water pipes and so on. In addition, in case of pump problems, you don't know how the CPU motherboard will die
Working principle of radiator: both air-cooled and water-cooled radiators have a device called base (water cooling system is also called water cooling head), which is generally made of copper (low-end and cheap air-cooled radiator is made of aluminum). Its function is to conct the heat generated by CPU, graphics card (or other equipment) to the heat sink (most of the heat sink are aluminum, a few are copper, because the copper has good thermal conctivity; Aluminum has good heat dissipation. The air-cooled radiator transmits heat to the heat sink through solid metal (copper or aluminum) or heat pipe; Water cooled radiator transmits heat to radiator through liquid (water or other liquid with good thermal conctivity). Finally, through the fan to blow the heat sink, the heat will be released as soon as possible. The difference between air cooling and water cooling: in fact, the radiator of air cooling and water cooling is finally dissipated by the fan blowing the radiator. The difference between them lies in the conction medium of the intermediate link
the danger of water-cooled radiator: because the water-cooled radiator uses liquid medium to conct heat, there will be a certain risk. Once the pipes and joints are damaged, it will cause liquid leakage, resulting in short circuit and burning of electrical components. Due to the high price of water cooling system, only a few enthusiasts and over frequency enthusiasts will use it. The vast majority of computers are air-cooled radiator. In the air-cooled radiator, according to the different materials, it can be divided into four kinds: pure aluminum, pure copper, copper aluminum combination, heat pipe. One of the best performance of the air-cooled radiator is copper aluminum combined with heat pipe design. The base is made of copper; Aluminum is the heat sink; The heat pipe is the medium for concting heat between the two. In the air-cooled radiator, according to the different use of fans, it can be divided into three types: side blowing, down pressing and no fan design. In order to keep quiet, save energy and rece manufacturing cost, this fanless design will be used in some equipment with small heat output, which only relies on the natural flow of heat sink and air to dissipate heat. The fan of the side blown radiator is 90% of the heat dissipation equipment ° Angle, for the main cooling equipment, is the best performance. The fan of the down pressure radiator is directly blowing down the heat dissipation equipment, which can not only heat the main heat dissipation equipment, but also heat the surrounding other equipment. For CPU, the best cooling performance of air-cooled radiator is: copper base; Aluminum heat sink; They are connected by heat pipes; Radiator with side blown fan design{ RRRRR}
Water cooled radiator to heat CPU
the water cooling system uses the pump to circulate the coolant in the cooling pipe and dissipate heat. The heat absorbing part on the radiator (called the heat absorbing box in the liquid cooling system) is used to absorb heat from the computer CPU, North Bridge and graphics card. The heat absorbed by the heat absorbing part is discharged to the outside of the host through the radiator designed on the back of the fuselage
functional principle of water cooling radiator:
a typical water cooling and cooling system must have the following components: water cooling block, circulating liquid, water pump, pipe, water tank or heat exchanger. The water cooling block is a metal block with a water channel inside, which is made of copper or aluminum. It contacts with the CPU and will absorb the heat of the CPU. The circulating liquid flows in the circulating pipeline by the action of the water pump. If the liquid is water, it is commonly known as the water cooling system
the liquid that has absorbed the heat of CPU will flow away from the water cooling block on CPU, while the new low-temperature circulating liquid will continue to absorb the heat of CPU. The water pipe connects the water pump, the water cooling block and the water tank. Its function is to make the circulating liquid circulate in a closed channel without leakage, so that the liquid cooling system can work normally
the water tank is used to store the circulating fluid, and the heat exchanger is a device similar to the heat sink. The circulating fluid transfers the heat to the heat sink with large surface area, and the fan on the heat sink takes away the heat flowing into the air
a typical water cooling system must have the following components: radiator, water cooling head, circulating pump, heat transfer fluid, pipe and water tank. The water cooling head is a metal block with a water channel inside, which is made of copper or aluminum. It contacts with the CPU and will absorb the heat of the CPU. The circulating liquid flows in the circulating pipeline under the action of the water pump. If the liquid is water, it is known as the water cooling system. The liquid that has absorbed the heat of CPU will flow away from the water cooling block on CPU, and the new low-temperature circulating liquid will continue to absorb the heat of CPU. The water pipe connects the water pump, water cooling head and water tank. Its function is to make the circulating heat transfer fluid circulate in a closed channel without leakage, so that the liquid cooling and heat dissipation system can work normally. The water tank is used to store the circulating liquid. The heat exchanger is a device similar to the heat sink. The circulating liquid transfers heat to the heat sink with large surface area, and the fan on the heat sink takes away the heat flowing into the air. The essence of water cooling and air cooling is the same, but water cooling uses circulating liquid to transport the heat of CPU from the water cooling block to the heat exchanger and then radiate it out, instead of the homogeneous metal or heat pipe of air cooling, and the heat exchanger part is almost the replica of air cooling radiator. There are two characteristics of water cooling system: balance the heat of CPU and low noise. Because the specific heat capacity of water is very large, it can absorb a lot of heat and keep the temperature unchanged. The temperature of CPU in the water cooling system can be well controlled, and sudden operation will not cause a large instantaneous change in the internal temperature of CPU. Due to the large surface area of the heat exchanger, only a low-speed fan is needed to cool it, Therefore, most of the water cooling is equipped with fans with low speed. In addition, the working noise of the water pump is generally not very obvious, so the overall cooling system is very quiet compared with the air cooling system. Water cooling, an expensive and complex heat dissipation method, is the most powerful operable radiator for PC (liquid nitrogen and other refrigeration methods can not be put into practical use). The over frequency players with the spirit of exploration started to use it a few years ago to create the record of over frequency limit, and the proct itself has also changed from the early self-made type to the standardized mass proction by professional manufacturers, And into the retail channel sales. With the expansion of proction scale and the graal accumulation of design and manufacturing experience, we have been able to buy quite cheap brand-name water-cooled radiators. Their value is no longer the same as before, or even more than the sum of CPU and motherboard prices. In addition to the attractiveness of price, the humanized design of the latest water-cooled procts has also made considerable progress, Various reasons have contributed to the situation that the water-cooled radiator can enter the chassis of ordinary DIY players.