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The car radiator has not been designed, but it should be consistent with the general radiator principle. In general, it is a system of equations that establish several heat transfer equations. Through simultaneous solution or iterative numerical calculation, the internal and external heat exchange area, geometric size, structural modeling, etc. are obtained.
1. Establish an internal heat exchange equation including coolant temperature, flow rate and internal heat exchange area of the heat exchanger according to the thermal power;
2. Establish the external heat exchange equation of the radiator, including air flow rate (determined by the fan), external heat exchange area, structural modeling (fin modeling, height, material, etc.);
Roughly these are the two main heat equations. However, there are too many details, such as the internal fluid state parameters, heat transfer coefficients, local Reynolds numbers, convective heat transfer forms, etc., as well as the external fin shape, processing form, etc., all of which have a great impact on the equations and calculations of the entire design process. Therefore, it is necessary to find the corresponding books and find the corresponding engineering experience calculation methods.
What can be written for a book can only be mentioned here as a rough idea. If the landlord doesn't know much about this aspect, he can only give some inspiration, but I hope it helps.
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The heat dissipation tank of the automobile engine is mainly made of aluminum or copper.
The water tank is an important component of the water-cooled engine, as an important component of the water-cooled engine heat dissipation circuit, it can absorb the heat of the cylinder block and prevent the engine from overheating due to the large specific heat capacity of the water, and the temperature does not rise very much after absorbing the heat of the cylinder block.
Therefore, the heat of the engine passes through the liquid circuit of cooling water, and the water is used as the heat carrier to conduct heat, and then dissipates heat in a convective way through a large area of heat sink to maintain the appropriate working temperature of the engine.
The role of the water tank:
1. The function of the water tank is to dissipate heat from the working engine and prevent the mechanical overheating, metal expansion, and affect the work.
2. Different car manufacturers will have different recommended replacement cycles for the original antifreeze, but most of them recommend that car owners replace the vehicle antifreeze every 2 years, and some manufacturers show that the replacement cycle of their original antifreeze is 4 or 5 years. But no matter what, in short, it has to be replaced, which is nothing more than the length of the replacement cycle.
3. Water tank boiling treatment: When the water thermometer is observed to rise during driving, you can choose the nearest safe area to park, and immediately turn off the engine and open the hood to help the engine dissipate heat.
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The heat dissipation tank of the automobile engine is mainly made of aluminum or copper.
The first is made of steel;
the second is made of aluminum;
the third is made of copper;
the fourth is copper-aluminum composite materials;
The fifth type is stainless steel.
The steel material is characterized by strong load-bearing capacity, good heat dissipation and thermal insulation function, long service life, and the disadvantage is that the oxidation resistance is not very good. The aluminum radiator is well decorated, and the heat dissipation is relatively fast.
The disadvantage is that the resistance to alkaline water is not very strong, and the high-rise residence is not suitable for this material radiator, because the water pressure is insufficient. The copper radiator has strong corrosion resistance, and the shape is more beautiful, and the thermal conductivity is the best, but the disadvantage is that it is not acceptable to ordinary families.
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At present, automobile water tanks are mainly made of aluminum or copper. Aluminum radiators are gradually replacing copper radiators, the main reason is that copper is greatly affected by changes in the material market, and in order to make vehicles with relatively low costs, aluminum radiators will be preferred by automobile manufacturers.
Automobile water tank, also known as radiator, is the main component in the automotive cooling system. The function is to dissipate heat, the cooling water absorbs heat in the water jacket, dissipates the heat after flowing to the radiator, and then returns to the water jacket to circulate to achieve temperature regulation. It is an integral part of the engine of the car.
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That's not called a water tank, that's called a radiator. Generally, the material is aluminum, so it is difficult to weld after cracking. If you want to find a professional repair person, you have to repair it. **It's more expensive, just make a small hole for a few hundred.
Your friend works with aluminum, but as I said, it's a radiator, not a simple box for water. If he really has the ability to do it himself, it is indeed very powerful. As for the use in your car, the engine will be hot. That's your own responsibility.
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Are you talking about a small tank or a radiator? The small water tank can be processed by itself, but if the radiator is afraid that you can't get it yourself. Generally, the radiator is aluminum. Most of the small water tanks are high-temperature resistant plastics.
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Most of the cars are made of aluminum, and the big ones are made of copper.
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It's aluminum, it should be hehe.
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First, the nature is different.
1. Radiator: Radiator is an important and basic component of hot water (or steam) heating system.
2. Automobile water tank: Automobile water tank, also known as radiator, is the main component in the automobile cooling system.
Second, the utility is different.
1. Radiator: hot water is cooled in the radiator (or steam condenses in the radiator) to heat the room to achieve the purpose of heating.
2. Automobile water tank: dissipate heat, the cooling water absorbs heat in the water jacket, dissipates the heat after flowing to the radiator, and then returns to the water jacket to circulate to achieve temperature regulation.
Third, the principle is different.
1. Radiator: hot water is cooled in the radiator (or steam condenses in the radiator) to heat the room to achieve the purpose of heating.
2. Automobile water tank: When the water temperature of the engine is high, the water pump pump repeatedly circulates to reduce the temperature of the engine. The high-temperature water enters the water tank through air cooling and circulates to the engine cylinder wall) to achieve the purpose of protecting the engine, if the water temperature is too low in winter, the water circulation will be stopped at this time to avoid the engine temperature is too low.
Encyclopedia - Radiator.
Encyclopedia - Car Water Tank.
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Automobile water tank, also known as radiator, is mostly installed in front of the automobile engine, mainly to increase the heat dissipation area and quickly cool the heat emitted by the engine.
How car radiators work.
When a car engine emits a huge amount of heat, the tank heats up according to the change in its temperature. When the water temperature reaches a certain level and the engine is fully loaded, a signal is sent to the vehicle system. The system takes into account the information received, as well as the outside temperature.
In this way, the cooling fan can be controlled to run at high speed to achieve the effect of rapid heat dissipation.
The heat emitted by the engine while driving is enough to destroy the parts of the car itself, so every car is equipped with a cooling system to protect the heat emitted by the engine from cooling down quickly. The radiator is the main body of this cooling system, so a radiator and overflow groove composed of small flat pipes are also installed at the bottom of the radiator to enhance its heat dissipation function.
How to clean car radiator?
Because whether the radiator is normal or not is related to the safety of the car, we should clean the radiator regularly.
1.Manual cleaning: Manually remove the radiator of the car, and then remove the scale of the radiator by means of a scraper or other tool. This method has a large workload, poor cleaning effect, and is easy to cause damage to the radiator.
2.Car radiator scale cleaner: This method still needs to remove the radiator first, and then clean it with spray, but the disadvantages are obvious. It is easy to produce peculiar smells and is highly corrosive, which will accelerate the aging of radiators.
3.Professional radiator descaler: This method is convenient and can be cleaned in place.
There is no need to disassemble the radiator to achieve the cleaning effect. The descaler can be poured directly into the car cooling system, soaked in the radiator, circulated quickly, and then discharged through the radiator and its internal system, and finally rinsed and discharged with water repeatedly.
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Normally, the radiator and the water tank are the same thing:
1. The car condenser radiator is generally assembled together, the front is the condenser, and the back is the evaporator, which is blown by the fan to speed up the heat dissipation. All in front of the car engine, next to the fence is the condenser, close to the engine is the car radiator;
2. Most of the condensers are placed in front of the car water tank, but the parts of the air conditioning system can transfer the heat in the tube to the air near the tube in a very fast way. In the distillation process, the device that converts gas or vapor into a liquid state is called a condenser, but all condensers operate by taking away the heat of gas or vapor;
3. The automobile condenser is a refrigerant that enters the evaporator, the pressure decreases, and the high-pressure gas becomes a low-pressure gas, which absorbs heat in this process, so the surface temperature of the evaporator is very low, and then the cold air can be blown out by the fan. The condenser is a high-pressure, high-temperature refrigerant that comes out of the compressor and cools it into a high-pressure, low-temperature cooling. Then it is gasified by capillary tube and evaporated in an evaporator;
4. The automobile radiator is composed of three parts: the water inlet chamber, the water outlet chamber and the radiator core. The coolant flows inside the radiator core and air passes through the radiator. The hot coolant cools down as it dissipates heat to the air, and the cold air heats up by absorbing the heat emitted by the coolant. @2019
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The water tank is the main part of the cooling system and maintains the heat of the engine by circulating the coolant through the engine waterways. In winter, the air conditioner also transfers heat from the water tank to the car.
In the past, domestic large cars and tractors generally used water, and the water was easy to freeze, so in the northern winter, it was common to see drivers using fire and hot water to bake the engine in the morning. It is also easy to boil in summer.
However, today's cars are relatively delicate, and if you use water, it will corrode the sensors, engine waterways, and water pipes in the tank. Professional coolants contain chemicals such as alcohols, which reduce the freezing point of the solution and increase the boiling point, making it suitable for use in many areas. However, there are also classifications of coolants, and the coolants used in different regions are also different.
Nowadays, cars use special coolant, and pure water can be used in a short period of emergency, but you have to immediately go to a professional car repair shop to repair the cooling system failure, and then clean the cooling system, and then add new coolant. The coolant can be replaced with a two-year or 20,000 km interval. Hope.
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