How to recycle cooling water Circulating route of coolant?

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In a closed circulating water system, the water is not exposed to the air, and the recooling of the water is carried out by a certain type of heat exchange equipment with other cooling mediums. Cooling water loss is minimal and essentially non-concentrated. The cooling water system of the internal combustion engine is representative of the closed circulation system.

In the open circulating water system, the cooling water temperature is increased to become hot water after passing through the heat exchanger, and the hot water is in contact with the air through the cooling tower aeration, and the water temperature is reduced due to the evaporation and contact heat dissipation of the water, and the cooled water is recycled. The open cooling water system is also called the cooling tower system, because it often uses the cooling tower as the cooling equipment for water, and this system is widely used in factories. This kind of open circulating cooling water system, because a part of the water needs to be evaporated in the circulation process, it is necessary to supplement a certain amount of fresh water and discharge a certain amount of concentrated water to maintain the salt content or a certain ion content in the circulating water at a certain value.

Resources.

The Great Cycle. It is the water in the tank and the water in the engine that circulate together.

Small loops. It is the water in the engine that circulates through the water pump, and the water in the tank does not circulate.

Large circulation: water pump, water distribution pipe, cylinder block water jacket, cylinder head water jacket, thermostat, radiator inlet hose, radiator, radiator outlet hose, water pump.

Small circulation: water pump, water distribution pipe, cylinder body water pipe, cylinder head water pipe, thermostat, bypass pipe, water pump.

A water pump is a machine that transports or pressurizes a liquid. It will be the mechanical energy of the prime mover.

or other external energy is transmitted to the liquid, causing the liquid energy to increase. The water pump is mainly used to transport liquids, including water, oil, acid and alkali liquid, emulsion, suspension emulsion and liquid metal, etc., and can also transport gas mixtures and liquids containing suspended solids.

According to different working principles, it can be divided into volumetric water pumps, vane pumps and other types. Positive displacement pumps use changes in the volume of their studios to transfer energy; Vane pumps use the interaction between rotary vanes and water to transfer energy, and there are centrifugal pumps.

Axial flow pumps and mixed-flow pumps.

1) The Great Cycle.

When the engine water temperature is higher than 80C, the main valve of the thermostat is fully opened, and the coolant is cooled.

All circulated through the radiator, where cooling efficiency is at its highest. The circulating waterway is: water pump + rainbow water channel + cylinder cover water channel thermostat main valve radiator water pump.

2) Small circulation.

It means that when the engine water temperature is lower than 70C, the main valve of the thermostat is completely closed, and the coolant does not circulate through the radiator, and the cooling efficiency is the lowest at this time. The circulating waterway is: water pump + cylinder body waterway, cylinder head, waterway, a thermostat, auxiliary valve- + water pump.

Small loops. When the coolant temperature is lower than 80, the paraffin wax becomes a solid state, the spring presses the valve on the seat, the valve is closed, and the coolant flows into the air conditioner radiator inlet pipe from the bypass port without flowing into the radiator, that is, a small circulation is carried out, and the cooling intensity of the cooling system is small.

The Great Cycle. When the temperature of the coolant is higher than 80, the paraffin wax melts into a liquid state, its volume expands, forcing the rubber sleeve to shrink, the upper end of the reverse push rod can not move up because it is fixed, the rubber sleeve pushes the shell to overcome the elastic force of the spring and move downward, open the valve, most of the coolant can enter the radiator along the radiator inlet pipe for large circulation, a small part of the coolant is still in small circulation, and the cooling intensity of the cooling system increases.

The size of the engine cooling system circulation route is controlled by the thermostat, the thermostat is closed is the engine cooling water in the body of the water jacket small circulation, when the thermostat is fully open, the large circulation nozzle opens, the small circulation nozzle is closed, and the cooling water is circulated through the radiator.

1. Because circulating water is not only available in the engine, but also in the air conditioner and heater. Generally, if the antifreeze is replaced, if it is the same ether or ethylene glycol, there is no need to consider the problem of cleaning.

2. If the replacement antifreeze is different, you can add 1-2 times of water purification after putting the old antifreeze and then add a new antifreeze, so that the original antifreeze content can be minimized. Even if the water is not clean, it has no effect because all antifreeze has water in it.

3. After replacing the anti-new freeze, pay attention to the specific gravity. It's not good to be too high or too low.

One more point. Generally, it is necessary to heat up the car and discharge the water, and there is a water discharge switch under the water tank and the cylinder body, (if the cylinder body does not have the relevant pipeline ventilation) it is best to let the front of the car be slightly lower. At the same time, it can also run the engine without water, and the time should not exceed one minute.

This can basically drain the water in the late stove system.

Circulating Cooling Water SystemCirculating Cooling Water System.

The water in the cooling tower is pumped to the production line by circulating water, cools the power equipment and electrical equipment, absorbs heat and sends it back to the cooling tower to ensure the normal operation of the production line.

Second, the current problems and hazards of the circulating water system.

The cooling water is evaporated and concentrated in the continuous circulation process, and the content of various impurities in the water continues to rise, which causes harm to the pipes and equipment in the cooling water system. At present, it has been observed from the cooling tower that there is a phenomenon of calcium silicate scaling, which proves that there are also different degrees of scaling problems in the equipment.

Calcium silicate and calcium sulfate scaling can not be removed by pickling, and the scaling of cooling water systems in other production industries cannot be effectively removed because of hail socks.

The fouling of the cooling water system reduces the thermal conductivity of the equipment, and the cooled equipment cannot be fully cooled, resulting in the weakening of the working efficiency of the equipment, the decrease of power, and the increase of energy consumption. If it is not dealt with in time, it will affect the production quality and the service life of the equipment, and can cause damage to power and electrical equipment.

At present, the commonly used dosing method and chemical cleaning method cannot fundamentally solve the scaling problem of the production system. If dosing treatment is used, a large reservoir, a filtration tank or a secondary treatment tank must be built. In order to save water, a large ** pool is needed to ensure the recycling of water.

This requires a lot of investment and post-management, and it takes up a large area of land.

Small circulation: water pump, front end of cylinder block, water jacket, cylinder head, rear outlet of cylinder head, return pipe, thermostat (small circulation port), water pump

Large circulation: water pump, front end of cylinder block, water jacket, cylinder head, rear outlet of cylinder head, return pipe, cooling water tank, thermostat (large circulation port), water pump

Cooling system size circulation control: Thermostats are usually used to control the flow of cooling water through the radiator. The thermostat is installed in the cooling water circulation channel (generally installed at the outlet of the cylinder head), and automatically changes the water circulation flow route according to the engine load and water temperature, so as to adjust the cooling intensity of the cooling system.

Cooling system circulation.

1. Main cycle.

There are two types of working cycles in the main cycle, namely the "cold cycle" and the "normal cycle". After the cold car hits the car, the engine is gradually heating up, and the temperature of the coolant can not open the thermostat in the system, and the coolant at this time is only through the water pump in the engine for "cold car circulation", the purpose is to make the engine reach the normal working temperature as soon as possible.

As the engine temperature rises, the coolant temperature rises to the thermostat opening temperature (usually after 80) and the cooling cycle begins the "normal cycle". At this time, the coolant comes out of the engine, passes through the radiator at the front of the car, dissipates heat, and then enters the engine through the water pump.

2. Heating cycle.

The coolant passes through the heating unit in the car, sending the heat of the coolant into the car and back to the engine. One thing is different: the heating cycle is not controlled by the thermostat and starts as soon as the heating is turned on, regardless of whether the coolant is cold or hot.

Summary. Hello, dear, I am glad to serve you: the cooling of circulating water is the result of the joint action of three processes: evaporative heat dissipation, contact heat dissipation and radiation heat dissipation through the contact between water and air.

1.Evaporative heat dissipation. The water forms large and small water droplets or very thin water films in the cooling equipment, expands its contact area with air and prolongs the contact time, strengthens the evaporation of water, and makes the water vapor take away the heat required for vaporization from the water, so that the water is cooled.

2.Contact heat dissipation. 3.

Radiant heat dissipation. The role of these three heat dissipation processes in water cooling varies depending on the physical properties of the air.

Hello, dear, I am glad to serve you: the cooling of circulating water is the result of the joint action of three processes: evaporation heat dissipation, contact heat dissipation and radiation heat dissipation through the contact between water and air. 1.

Evaporative heat dissipation. The water forms large and small water droplets or very thin water films in the cooling equipment, expands its contact area with air and prolongs the contact time, strengthens the evaporation of water, and makes the water vapor take away the heat required for vaporization from the water, so that the water is cooled. 2.

Exposure to dissipation of fever. 3.Radiant heat dissipation.

The role of these three heat dissipation processes in water cooling varies depending on the physical properties of the air. The mold cavity burns.

Supplementary Materials:1The evaporative hot water is dispersed into small water droplets or water films in the cooling tower through the water distribution system, and the contact area with the air preparation is large and the contact time is relatively long.

The air humidity entering from outside the tower is relatively low, and the water is relatively easy to vaporize into water vapor, and the heat absorbed during the vaporization process is water cooling. 2.The temperature of the fresh air entering from outside the tower is relatively low, and when it encounters hot water, the hot water will directly transfer the heat to the airflow through contact, and the temperature of the water will be reduced, and the temperature of the airflow will increase.

The greater the temperature difference between water and air, the better the heat transfer. 3.Radiant heat dissipation Radiant heat dissipation does not require a medium, but hot water radiates energy outward in the form of electromagnetic waves.

The higher the temperature of the water body, the larger the surface area, and the better the radiation heat dissipation effect. Therefore, the radiant heat dissipation effect is more obvious in the large area of the cooling pool, and the radiant heat dissipation can be ignored in other cooling equipment.

Since most vehicles use water-cooled engines, this article focuses on the cooling cycle of water-cooled engines. In the cooling cycle of a water-cooled engine, it can be divided into small cycle and large cycle. The small circulation means that the cooling water circulates only in the engine, while the large circulation is when the cooling water circulates between the engine and the heat exchanger (water tank).

Why are there big cycles and small cycles? The main reason is that the temperature of the engine is low when the car is cold, and a small amount of cooling water is circulated in the engine at this time, so that the engine can quickly reach the working temperature; Once the engine reaches the operating temperature, the temperature control valve (commonly known as the turtle) that controls the transition between large and small cycles will be opened, allowing the cooling water to flow into the tank to let the air go away. The circulation of cooling water is driven by the water pump, which is driven by the operation of the engine, so when the engine speed is higher, the higher the operation efficiency of the water pump.

Characteristics of the coolantThe coolant is made of pure water and water tank essence in a certain ratio, and the water tank essence can increase the boiling point of cooling water. The boiling point of pure water at room temperature and pressure is 100, once the engine temperature is too high, the cooling water will boil into water vapor, and the thermal convection coefficient of water in the gaseous state is much lower than that in the liquid state, so the gaseous water vapor can hardly take the heat of the old section away from the engine, and the engine temperature will rise rapidly and damage the engine. Therefore, Shanyu Water Tank Jing raises the boiling point of the cooling water to ensure that the coolant is still liquid at high temperatures, so as to take away the heat generated by the engine.

Millions of car purchase subsidies.

Good afternoon, dear, I'm honored to answer for you. The circulating water cooler is usually used for the cooling of industrial equipment, and the correct application steps need to be carried out before use, and the following are the general application steps: 1. Check whether the operating environment and wiring power supply of the circulating water cooler equipment meet the requirements.

2. Check whether the water pump and water tank of the circulating water cooler are normal, whether the waterway is unblocked, and confirm that the water level is within the specified range. 3. Turn on the power switch of the circulating water cooler, connect the equipment to the power supply, and turn on the power switch inside the cooler. 4. Set the temperature controller of the circulating water cooler.

According to the specific needs of use, the temperature is set within the appropriate range. 5. Check the pressure gauge of the circulating water cooler to ensure that the water pressure inside the cooler is within the normal range. 6. Turn on the circulation switch of the circulating water cooler and start the circulating pump to make the water flow into the equipment for cooling.

7. Monitor the operation of the circulating water cooler, check whether the water flow is normal, whether the temperature is stable, and whether the pressure is normal. 8. During use, regularly clean the filter screen and water tank of the circulating water cooler to keep the equipment clean and hygienic. Before putting into use the circulating water cooler, it must be operated correctly in accordance with the operating instructions of the equipment to ensure the safety and reliability of the equipment.

In the process of using Hanye, it is also necessary to check the operation status of the equipment frequently, find and solve the problem in time, so as to ensure the normal operation of the circulating water cooler, I hope my help can help you