I don't know if friends who have used radiators for heating have found that radiators are generally hot at the top and cool at the bottom. In fact, no matter what shape of radiator it is, when it is working normally, there will be such a phenomenon that the top is the hottest and the bottom is the coolest. In general, as long as the temperature difference between the upper and lower levels is not too large, it is considered a normal phenomenon and does not need to be treated, and if the top is hot and the bottom is cold, then corresponding measures need to be taken to deal with it.
Why does the radiator appear hot at the top and cool at the bottom?
The essential reason why the radiator is hot at the top and cool at the bottom is that the heating currently used is water heating, and water flows in the radiator. And water has a physical property, that is, hot water is less dense than cold water, and when the two are mixed together, the cold water will go down and the hot water will go up. This is also the principle in the radiator, the hot water is in the upper part, and the upper part is naturally hot, and the hot water after cooling after heat dissipation will naturally go down, and the lower part is cold. And this is only for the water in a stationary state, and if the water is constantly circulating, with the intervention of external forces, the faster the water circulates, the smaller the temperature difference between the upper and lower temperatures. However, it is not that the faster the water circulation, the better, there is an economic indicator here, it is relatively normal to keep the water circulation speed of the heating supply and return water with a temperature difference of 10°C. In this case, a 10°C difference in temperature will feel hot at the top and cool at the bottom.
However, in actual life, if the temperature difference between the upper and lower levels is particularly large, and the phenomenon of hot and cool is greater than 10 °C, then it is caused by the abnormal operation of the radiator, which needs to be dealt with, mainly for the following reasons:
1. Air congestion
In the plumbing system, it is easy to enter the air, and once the air enters the heating system, it may block the normal circulation of water in the heating pipeline, which will also lead to the phenomenon of hot and cold in the radiator.
2. The heating pipeline is blocked
In the plumbing system, if the water quality we use is not good, or the heating pipe itself is corroded, if it is not cleaned for a long time, it will lead to the entire heating system, or a certain radiator will be blocked, resulting in poor water circulation. In this way, there will also be a serious phenomenon of hot on the radiator and cold on the bottom.
3. The circulating power of the heating system is insufficient
Most of the heating system has to rely on the circulating water pump and other power equipment, if our heating system is relatively large, and the power of the circulating water pump is small, then it will cause the water circulation in the radiator to be too slow, which may lead to serious heating and cold phenomenon.
In the above three cases, the radiator will have a serious phenomenon of upper heating and lower cold, and this situation is an abnormal phenomenon that needs to be treated.
The treatment method of hot on the radiator and cool on the bottom
If the radiator in our home has a serious situation, that is, the temperature difference between the top and bottom exceeds 10 °C, the top and bottom are hot, and the following way is treated:
1. Carry out exhaust
The first step is to determine whether there is air in the heating system, resulting in air blockage, and we only need to deflate at the highest point, or a single radiator, to solve the problem of hot on the radiator and cool on the radiator.
2. Clean the pipeline and radiator
If it is true that our heating pipes or radiators have been used for a long time and have not been cleaned, and there is a local blockage, then we need to clean the heating pipes and radiators, dredge the blocked places, and the water circulation is normal, so the radiators will not appear serious hot and cold.
3. Increase power cycle equipment
If after the above steps, or it is determined that it is because the power cycle is insufficient, then it is necessary to consider adding a circulating water pump to the heating, or replace the original circulating water pump with a relatively high power, so that the water circulation in the pipeline is smooth and the situation of hot and cold on the radiator is solved.
summary
As for the radiator, as long as the temperature difference between the top and bottom is not more than 10 °C, it is generally normal, because of the physical characteristics of water. If the temperature difference between the upper and lower levels is greater than 10 °C, it may be caused by the above three reasons, and we need to deal with it according to the corresponding methods. The article also lists it for you, I hope you have a reference.
Source: Originated from Baidu Water Bottle Home
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