Almost all modern heating systems have a circulation pump that supports the necessary fluid pressure within the heating circuit. At the same time, the support of a specifically predetermined fluid pressure in the system is incredibly important, therefore, to the selection of the circulation pump used in the system, it is necessary to approach responsibly.
Main aspects when choosing a circulation pump
- Productivity work. In this case, there is a calculation at minimum workload.
- The size of the heating of the room. This characteristic is based on the diameter of the pipes, temperature, as well as on the type of fluid.
- External characteristics of the pump. This item includes equipment dimensions, the noise level, which it creates, as well as the overall complexity of the service.
- Pump pressure.
How to choose a circulation pump for heating - performance
First you need to pay attention to the formula that allows you to calculate the performance of this equipment: Q \u003d N / (T 2- T 1).
In this case, q is a flow rate, N is the power that is available at the heating source, T1 is the temperature of the fluid in the pipes, and T2 is the temperature within the feed part of the circuit.
As for specific calculations, experts note that, for example, a radiator of 5 sections is suitable for an area of \u200b\u200b10 square meters (each 200 W section). Accordingly, the pump must cope with the water supply to all radiators within the framework.
How to choose a circulation pump for heating - Pressure
If we are talking about pressure, it means the level to which the pump can raise water in the heating system. Usually, in order to analyze this information, it suffices to refer to the documentation that is presented with the pump.
For example, if you pay attention to the pump model Grundfos UPS 25-40, here we have a number 40 in the documentation that refers to the height of the coolant lifting is 4 meters. Also in the description there is a digit 25, which corresponds to the necessary diameter of pipes that are joined by equipment.
How to choose a heating circulation pump - specificity of external factors
If we talk about external factors, then first of all, these are the following items:
- Ambient temperature. Here you need to decide on the necessary amount of heat so that the environment does not become the main problem for complete heating of the room. By the way, sometimes it happens that the pump overheats, and often the problem is not in the environment, but in failures.
- Pipe diameter. Obviously, large pipes require a powerful pump, which without any problems can cope with a large volume and pressure of water. Accordingly, with a large diameter, a high-performance pump is required, moreover, reliable. Fortunately, there is no problem in this issue, since the range of this product does not cause any difficulties.
Separately, experts advise paying attention to the need for constant or regular operation of the pump. In some cases, it can work continuously, and sometimes extremely rare. Accordingly, in the second case, the issue of the power of the pump can frankly go into the background.
In the event that the pump will function in a pair with a loop of natural circulation, then the total load on the pump may be simply colossal. With this situation, the best solution is the choice of the highest productivity and pressure of the pump.
- Electrical power consumption. Often this value is low - from 50 to 200 W. Interestingly, more important is necessary only if the pump is constantly functioning.
Heating pump manufacturer
Despite the presence of a huge range of circulating pumps, it is often difficult to make the right choice turns out to be quite difficult. The main characteristics of the entire equipment, regardless of the brand - similar. But at the same time it is worth paying attention to the reliability of the pump, as well as for its service life.
Among the most famous manufacturers of circulation pumps include the following companies: Wester Grundfos, Elsotherm, Wilo, Wita, Sveroni. At the same time, you can find many Chinese analogues, which in their quality can not give up the above products. But practice often shows that Chinese pumps are not able to work out for too long, so much likely will be made money for additional service.
The lack of the above brands is that their products are too expensive for the usual host, which does not have too large budget. However, if the brand pump has already been purchased, you can forget about the service and many other problems. With most likely the pump will be without interruptions to work for several years, or even longer. Depending on the point of sale, you can always purchase a pump at a fairly democratic price.
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