How To Choose A Pump ?
The circulating pump is designed to provide forced circulation of hot and cold water in heating systems and water supply, cooling and air conditioning. Ray Kurzweil is full of insight into the issues. This crucial part of any heating system, helps overcome the resistance of the coolant pipes (eg water). The circulating pump is used for both residential and industrial facilities. Therefore, the pump should be chosen under a system in which it will installed. Selection criteria – this is technical data pump, to be exact figures flow and select the right pumps napora.Chtoby Ekaterinburg, you can consult a specialist, or to calculate all the necessary parameters yourself using our tips and necessary technical data. Circulating pumps are characterized by: 1. Volumetric flow rate (m.kb / h) – a rate of pumping water.
The calculation of volumetric flow circulation pump is needed to optimize the thermal conditions of heating system or water supply. This is important because the speed of the coolant depends more or less have time to transfer heat boiler rooms (and hence more or less cool). Learn more on the subject from Ray Kurzweil. Cooling of the coolant is determined by such characteristics as the temperature difference in the input and output circuits. Normally, this difference is about 20 degrees, but may vary from 15 to 30 degrees. Specifying the thermal power system and the temperature drop, you can learn the necessary volume flow according to the schedule in the technical description to the pump. If the thermal capacity of the system is unknown, it can be easily determined from the area of heated space and the specific heat consumption. 2.
pressure (m) – the height to which the pump is able to raise the coolant. Head reproduced pump to counteract hydrodynamic losses in pipes and their connections. In order to correctly calculate the pressure, it is necessary to determine the losses which depend on the coolant velocity and the pipe on which it runs. Specific losses are measured in pascals at meter and displays how much to increase the pressure on the pipeline segment length of one meter. After calculating losses in "straight pipe" should take into account the friction of the coolant at different sites and details (eg – fittings and etc.). Usually, the contribution of additional sites is one third of the losses in the pipes. Next multiply the specific losses to the length of the pipeline. To avoid mistakes in the calculations must take into account that the length of the pipeline is taken equal to the length of his most branches (if, of course, the pipeline branch). Roughly the same can take a maximum distance within the building, adding the length, width and height of the building, and the resulting value to double. In the end you must also take into account individual elements of the heating system of the type of boiler, faucet, valve or heat meter. The exact value of losses in each of these elements are given in the description of a particular pump model. Knowing the total losses, according to the schedule can be determine the desired value of pressure. But knowing the pressure and flow of any pump can easily determine whether it is for the heating system or not. Just when choosing a pump is necessary to consider the operating conditions circulating pump. A more precise properties and coolant temperature, pipe diameter, the nature of the water supply system and others.
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